diff --git a/.github/workflows/update-browser-releases.yml b/.github/workflows/update-browser-releases.yml
index 6705c5cc4fa248..34dfb95cb3ddcb 100644
--- a/.github/workflows/update-browser-releases.yml
+++ b/.github/workflows/update-browser-releases.yml
@@ -34,7 +34,7 @@ jobs:
           npm run update-browser-releases -- --all >> $GITHUB_ENV
           echo "EOF" >> $GITHUB_ENV
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ secrets.GH_TOKEN }} # need the rights to create and edit PRs
           commit-message: Update browser releases
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index ace18aa0fc0230..808ec2b423c29a 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,5 +1,281 @@
 # @mdn/browser-compat-data release notes
 
+## [v5.5.51](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.51)
+
+September 6, 2024
+
+### Removals
+
+- `api.IDBFactory.open.options_parameter` ([#24360](https://github.com/mdn/browser-compat-data/pull/24360))
+
+### Additions
+
+- `api.FileSystemFileHandle.createSyncAccessHandle.mode` ([#24038](https://github.com/mdn/browser-compat-data/pull/24038))
+- `api.FileSystemFileHandle.createWritable.mode` ([#24038](https://github.com/mdn/browser-compat-data/pull/24038))
+- `browsers.edge.releases.131` ([#24341](https://github.com/mdn/browser-compat-data/pull/24341))
+- `browsers.samsunginternet_android.releases.26.0` ([#24255](https://github.com/mdn/browser-compat-data/pull/24255))
+- `browsers.samsunginternet_android.releases.27.0` ([#24255](https://github.com/mdn/browser-compat-data/pull/24255))
+- `http.headers.Refresh` ([#24273](https://github.com/mdn/browser-compat-data/pull/24273))
+
+### Statistics
+
+- 10 contributors have changed 35 files with 211 additions and 106 deletions in 26 commits ([`v5.5.50...v5.5.51`](https://github.com/mdn/browser-compat-data/compare/v5.5.50...v5.5.51))
+- 16,483 total features
+- 1,104 total contributors
+- 4,892 total stargazers
+
+## [v5.5.50](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.50)
+
+September 3, 2024
+
+### Additions
+
+- `api.Notification.requestPermission_static.returns_promise` ([#23911](https://github.com/mdn/browser-compat-data/pull/23911))
+- `browsers.firefox_android.releases.133` ([#24282](https://github.com/mdn/browser-compat-data/pull/24282))
+- `browsers.firefox.releases.133` ([#24282](https://github.com/mdn/browser-compat-data/pull/24282))
+- `webdriver.commands.CreateVirtualPressureSource` ([#24211](https://github.com/mdn/browser-compat-data/pull/24211))
+- `webdriver.commands.DeleteVirtualPressureSource` ([#24211](https://github.com/mdn/browser-compat-data/pull/24211))
+- `webdriver.commands.UpdateVirtualPressureSource` ([#24211](https://github.com/mdn/browser-compat-data/pull/24211))
+
+### Statistics
+
+- 7 contributors have changed 41 files with 387 additions and 134 deletions in 29 commits ([`v5.5.49...v5.5.50`](https://github.com/mdn/browser-compat-data/compare/v5.5.49...v5.5.50))
+- 16,481 total features
+- 1,103 total contributors
+- 4,889 total stargazers
+
+## [v5.5.49](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.49)
+
+August 27, 2024
+
+### Removals
+
+- `css.types.color.transparent` ([#24209](https://github.com/mdn/browser-compat-data/pull/24209))
+
+### Additions
+
+- `api.WebSocket.WebSocket.url_parameter_http_https_relative` ([#24218](https://github.com/mdn/browser-compat-data/pull/24218))
+- `css.properties.interpolate-size` ([#24210](https://github.com/mdn/browser-compat-data/pull/24210))
+- `css.properties.interpolate-size.allow-keywords` ([#24210](https://github.com/mdn/browser-compat-data/pull/24210))
+- `css.properties.interpolate-size.numeric-only` ([#24210](https://github.com/mdn/browser-compat-data/pull/24210))
+- `css.types.calc-size` ([#24210](https://github.com/mdn/browser-compat-data/pull/24210))
+- `css.types.color.named-color.transparent` ([#24209](https://github.com/mdn/browser-compat-data/pull/24209))
+
+### Statistics
+
+- 6 contributors have changed 22 files with 491 additions and 267 deletions in 14 commits ([`v5.5.48...v5.5.49`](https://github.com/mdn/browser-compat-data/compare/v5.5.48...v5.5.49))
+- 16,477 total features
+- 1,103 total contributors
+- 4,882 total stargazers
+
+## [v5.5.48](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.48)
+
+August 24, 2024
+
+### Removals
+
+- `css.properties.-webkit-initial-letter` ([#24201](https://github.com/mdn/browser-compat-data/pull/24201))
+- `javascript.builtins.Intl.RelativeTimeFormat.resolvedOptions.numberingSystem` ([#24181](https://github.com/mdn/browser-compat-data/pull/24181))
+- `javascript.builtins.String.toLocaleLowerCase.locale` ([#24181](https://github.com/mdn/browser-compat-data/pull/24181))
+- `javascript.builtins.String.toLocaleUpperCase.locale` ([#24181](https://github.com/mdn/browser-compat-data/pull/24181))
+
+### Additions
+
+- `javascript.builtins.String.toLocaleLowerCase.locales_parameter` ([#24181](https://github.com/mdn/browser-compat-data/pull/24181))
+- `javascript.builtins.String.toLocaleUpperCase.locales_parameter` ([#24181](https://github.com/mdn/browser-compat-data/pull/24181))
+
+### Statistics
+
+- 6 contributors have changed 13 files with 49 additions and 400 deletions in 14 commits ([`v5.5.47...v5.5.48`](https://github.com/mdn/browser-compat-data/compare/v5.5.47...v5.5.48))
+- 16,472 total features
+- 1,103 total contributors
+- 4,879 total stargazers
+
+## [v5.5.47](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.47)
+
+August 20, 2024
+
+### Removals
+
+- `css.properties.cursor.inherit` ([#24010](https://github.com/mdn/browser-compat-data/pull/24010))
+- `css.properties.inset-area` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.block-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.block-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.bottom` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.center` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.inline-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.inline-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.left` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.none` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.right` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-all` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-block-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-block-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-bottom` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-inline-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-inline-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-top` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-x-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-x-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-y-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.span-y-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.top` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.x-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.x-self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.x-self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.x-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.y-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.y-self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.y-self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.inset-area.y-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-try-fallbacks.inset-area` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `html.manifest.categories` ([#23774](https://github.com/mdn/browser-compat-data/pull/23774))
+- `html.manifest.screenshots` ([#23774](https://github.com/mdn/browser-compat-data/pull/23774))
+- `javascript.builtins.Temporal.Instant.epochMicroseconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Instant.epochSeconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Instant.fromEpochMicroseconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Instant.fromEpochSeconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Instant.toZonedDateTime` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Now.plainDate` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Now.plainDateTime` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Now.timeZone` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Now.zonedDateTime` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDate.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.toPlainMonthDay` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.toPlainYearMonth` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.withPlainDate` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainMonthDay.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainTime.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainTime.toPlainDateTime` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainTime.toZonedDateTime` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainYearMonth.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.TimeZone.getNextTransition` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.TimeZone.getPreviousTransition` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.calendar` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.epochMicroseconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.epochSeconds` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.timeZone` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.toPlainMonthDay` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.toPlainYearMonth` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.withPlainDate` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+
+### Additions
+
+- `api.CSSFontFeatureValuesMap` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.@@iterator` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.clear` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.delete` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.entries` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.forEach` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.get` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.has` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.keys` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.set` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.size` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSFontFeatureValuesMap.values` ([#24166](https://github.com/mdn/browser-compat-data/pull/24166))
+- `api.CSSPageDescriptors.page-orientation` ([#24170](https://github.com/mdn/browser-compat-data/pull/24170))
+- `api.CSSPageDescriptors.pageOrientation` ([#24170](https://github.com/mdn/browser-compat-data/pull/24170))
+- `browsers.chrome_android.releases.129` ([#24139](https://github.com/mdn/browser-compat-data/pull/24139))
+- `browsers.chrome.releases.129` ([#24139](https://github.com/mdn/browser-compat-data/pull/24139))
+- `browsers.nodejs.releases.18.18.0` ([#23973](https://github.com/mdn/browser-compat-data/pull/23973))
+- `browsers.nodejs.releases.18.19.0` ([#23973](https://github.com/mdn/browser-compat-data/pull/23973))
+- `browsers.nodejs.releases.18.20.0` ([#23973](https://github.com/mdn/browser-compat-data/pull/23973))
+- `browsers.webview_android.releases.129` ([#24139](https://github.com/mdn/browser-compat-data/pull/24139))
+- `css.properties.position-area` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.block-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.block-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.bottom` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.center` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.inline-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.inline-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.left` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.none` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.right` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-all` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-block-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-block-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-bottom` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-inline-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-inline-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-top` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-x-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-x-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-y-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.span-y-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.top` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.x-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.x-self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.x-self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.x-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.y-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.y-self-end` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.y-self-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-area.y-start` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.position-try-fallbacks.position-area` ([#23993](https://github.com/mdn/browser-compat-data/pull/23993))
+- `css.properties.reading-flow` ([#23927](https://github.com/mdn/browser-compat-data/pull/23927))
+- `html.global_attributes.writingsuggestions` ([#24121](https://github.com/mdn/browser-compat-data/pull/24121))
+- `html.manifest.display_override.window-controls-overlay` ([#23774](https://github.com/mdn/browser-compat-data/pull/23774))
+- `javascript.builtins.Temporal.Now.plainTimeISO` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.Now.timeZoneID` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDate.calendarId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDate.yearOfWeek` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.calendarId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainDateTime.yearOfWeek` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainMonthDay.calendarId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.PlainYearMonth.calendarId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.calendarId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.getTimeZoneTransition` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.timeZoneId` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+- `javascript.builtins.Temporal.ZonedDateTime.yearOfWeek` ([#24005](https://github.com/mdn/browser-compat-data/pull/24005))
+
+### Statistics
+
+- 13 contributors have changed 356 files with 4,835 additions and 1,850 deletions in 63 commits ([`v5.5.46...v5.5.47`](https://github.com/mdn/browser-compat-data/compare/v5.5.46...v5.5.47))
+- 16,474 total features
+- 1,103 total contributors
+- 4,878 total stargazers
+
+## [v5.5.46](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.46)
+
+August 13, 2024
+
+### Removals
+
+- `css.properties.masonry-auto-flow` ([#24009](https://github.com/mdn/browser-compat-data/pull/24009))
+
+### Additions
+
+- `api.SubtleCrypto.deriveBits.x25519` ([#23925](https://github.com/mdn/browser-compat-data/pull/23925))
+- `api.SubtleCrypto.deriveKey.x25519` ([#23925](https://github.com/mdn/browser-compat-data/pull/23925))
+- `api.SubtleCrypto.exportKey.x25519` ([#23925](https://github.com/mdn/browser-compat-data/pull/23925))
+- `api.SubtleCrypto.generateKey.x25519` ([#23925](https://github.com/mdn/browser-compat-data/pull/23925))
+- `api.SubtleCrypto.importKey.x25519` ([#23925](https://github.com/mdn/browser-compat-data/pull/23925))
+- `browsers.edge.releases.130` ([#24063](https://github.com/mdn/browser-compat-data/pull/24063))
+- `browsers.firefox_android.releases.132` ([#24046](https://github.com/mdn/browser-compat-data/pull/24046))
+- `browsers.firefox.releases.132` ([#24046](https://github.com/mdn/browser-compat-data/pull/24046))
+- `http.headers.Reporting-Endpoints` ([#24047](https://github.com/mdn/browser-compat-data/pull/24047))
+- `webextensions.api.webRequest.getSecurityInfo.options` ([#24056](https://github.com/mdn/browser-compat-data/pull/24056))
+
+### Statistics
+
+- 7 contributors have changed 128 files with 1,741 additions and 1,804 deletions in 38 commits ([`v5.5.45...v5.5.46`](https://github.com/mdn/browser-compat-data/compare/v5.5.45...v5.5.46))
+- 16,476 total features
+- 1,100 total contributors
+- 4,876 total stargazers
+
 ## [v5.5.45](https://github.com/mdn/browser-compat-data/releases/tag/v5.5.45)
 
 August 6, 2024
diff --git a/api/ANGLE_instanced_arrays.json b/api/ANGLE_instanced_arrays.json
index ef7d2eb69863a6..67bbad3d511c45 100644
--- a/api/ANGLE_instanced_arrays.json
+++ b/api/ANGLE_instanced_arrays.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AbortController.json b/api/AbortController.json
index 60317ef31a5c13..fa87eb8ff2636e 100644
--- a/api/AbortController.json
+++ b/api/AbortController.json
@@ -43,7 +43,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -95,7 +96,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +149,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +202,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AbortPaymentEvent.json b/api/AbortPaymentEvent.json
index 4928e9c920f75b..ff259cda7277bc 100644
--- a/api/AbortPaymentEvent.json
+++ b/api/AbortPaymentEvent.json
@@ -25,7 +25,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/AbortSignal.json b/api/AbortSignal.json
index eb3c1cbd8ad702..62ff3abd8d1dcb 100644
--- a/api/AbortSignal.json
+++ b/api/AbortSignal.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,6 +100,9 @@
           "description": "<code>abort()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbortSignal/abort_static",
           "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-abortsignal-abort①",
+          "tags": [
+            "web-features:aborting"
+          ],
           "support": {
             "chrome": {
               "version_added": "93"
@@ -125,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,6 +143,9 @@
           "__compat": {
             "description": "<code>reason</code> parameter",
             "spec_url": "https://dom.spec.whatwg.org/#abortsignal-abort-reason",
+            "tags": [
+              "web-features:aborting"
+            ],
             "support": {
               "chrome": {
                 "version_added": "98"
@@ -170,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,6 +291,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbortSignal/reason",
           "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-abortsignal-reason①",
+          "tags": [
+            "web-features:aborting"
+          ],
           "support": {
             "chrome": {
               "version_added": "98"
@@ -312,7 +327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,6 +341,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbortSignal/throwIfAborted",
           "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-abortsignal-throwifaborted①",
+          "tags": [
+            "web-features:aborting"
+          ],
           "support": {
             "chrome": {
               "version_added": "100"
@@ -358,7 +377,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,6 +392,9 @@
           "description": "<code>timeout()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbortSignal/timeout_static",
           "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-abortsignal-timeout①",
+          "tags": [
+            "web-features:aborting"
+          ],
           "support": {
             "chrome": {
               "version_added": "103"
@@ -405,7 +428,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AbsoluteOrientationSensor.json b/api/AbsoluteOrientationSensor.json
index 8d1666f37a7c8d..164e05c16e5fc0 100644
--- a/api/AbsoluteOrientationSensor.json
+++ b/api/AbsoluteOrientationSensor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbsoluteOrientationSensor",
         "spec_url": "https://w3c.github.io/orientation-sensor/#absoluteorientationsensor-interface",
+        "tags": [
+          "web-features:orientation-sensor"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>AbsoluteOrientationSensor()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AbsoluteOrientationSensor/AbsoluteOrientationSensor",
           "spec_url": "https://w3c.github.io/orientation-sensor/#dom-absoluteorientationsensor-absoluteorientationsensor",
+          "tags": [
+            "web-features:orientation-sensor"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AbstractRange.json b/api/AbstractRange.json
index 59274043c70098..cc0d9da2199401 100644
--- a/api/AbstractRange.json
+++ b/api/AbstractRange.json
@@ -33,7 +33,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Accelerometer.json b/api/Accelerometer.json
index 2a754e6d7bbea7..22b2df8b755e7e 100644
--- a/api/Accelerometer.json
+++ b/api/Accelerometer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Accelerometer",
         "spec_url": "https://w3c.github.io/accelerometer/#accelerometer-interface",
+        "tags": [
+          "web-features:accelerometer"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,6 +42,9 @@
           "description": "<code>Accelerometer()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Accelerometer/Accelerometer",
           "spec_url": "https://w3c.github.io/accelerometer/#dom-accelerometer-accelerometer",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Accelerometer/x",
           "spec_url": "https://w3c.github.io/accelerometer/#accelerometer-x",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,6 +118,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Accelerometer/y",
           "spec_url": "https://w3c.github.io/accelerometer/#accelerometer-y",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -127,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -140,6 +156,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Accelerometer/z",
           "spec_url": "https://w3c.github.io/accelerometer/#accelerometer-z",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -161,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/AmbientLightSensor.json b/api/AmbientLightSensor.json
index c1cee25a5b4fb4..2ef5911fe24e62 100644
--- a/api/AmbientLightSensor.json
+++ b/api/AmbientLightSensor.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -115,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/AnalyserNode.json b/api/AnalyserNode.json
index 58e6315da6f916..2e32c0bb22007a 100644
--- a/api/AnalyserNode.json
+++ b/api/AnalyserNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AnalyserNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>AnalyserNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/AnalyserNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-analysernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/fftSize",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-fftsize",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/frequencyBinCount",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-frequencybincount",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/getByteFrequencyData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-getbytefrequencydata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -177,7 +196,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/getByteTimeDomainData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-getbytetimedomaindata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -215,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,6 +252,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/getFloatFrequencyData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-getfloatfrequencydata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -253,7 +280,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,6 +294,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/getFloatTimeDomainData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-getfloattimedomaindata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "35"
@@ -289,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,6 +334,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/maxDecibels",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-maxdecibels",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -327,7 +362,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -340,6 +376,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/minDecibels",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-mindecibels",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -365,7 +404,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,6 +418,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AnalyserNode/smoothingTimeConstant",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-analysernode-smoothingtimeconstant",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -403,7 +446,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Animation.json b/api/Animation.json
index 45d85bb5364fec..a415660c6de0f0 100644
--- a/api/Animation.json
+++ b/api/Animation.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -369,7 +378,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,7 +416,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -443,7 +454,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -481,7 +493,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +531,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -555,7 +569,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -592,7 +607,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -639,7 +655,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -676,7 +693,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -717,7 +735,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -751,7 +770,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -788,7 +808,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -825,7 +846,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -862,7 +884,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -901,7 +924,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -938,7 +962,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AnimationEffect.json b/api/AnimationEffect.json
index 3dcf07c6cdce06..54178519d7140c 100644
--- a/api/AnimationEffect.json
+++ b/api/AnimationEffect.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AnimationEvent.json b/api/AnimationEvent.json
index 8b42a71f31edc4..6872c0c0a02049 100644
--- a/api/AnimationEvent.json
+++ b/api/AnimationEvent.json
@@ -85,7 +85,8 @@
               "version_added": "≤37",
               "version_removed": "70"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -127,7 +128,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AnimationPlaybackEvent.json b/api/AnimationPlaybackEvent.json
index 75ee4f4c0fcab6..e4fef714d90f6c 100644
--- a/api/AnimationPlaybackEvent.json
+++ b/api/AnimationPlaybackEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AnimationTimeline.json b/api/AnimationTimeline.json
index 41269ea5ce3b78..a9165d6088e683 100644
--- a/api/AnimationTimeline.json
+++ b/api/AnimationTimeline.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +99,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ApplicationCache.json b/api/ApplicationCache.json
deleted file mode 100644
index f60b527ab37095..00000000000000
--- a/api/ApplicationCache.json
+++ /dev/null
@@ -1,604 +0,0 @@
-{
-  "api": {
-    "ApplicationCache": {
-      "__compat": {
-        "support": {
-          "chrome": {
-            "version_added": "5",
-            "version_removed": "85"
-          },
-          "chrome_android": "mirror",
-          "edge": {
-            "version_added": "12",
-            "version_removed": "86"
-          },
-          "firefox": {
-            "version_added": "3",
-            "version_removed": "84"
-          },
-          "firefox_android": "mirror",
-          "ie": {
-            "version_added": "10"
-          },
-          "oculus": "mirror",
-          "opera": {
-            "version_added": "≤12.1",
-            "version_removed": "71"
-          },
-          "opera_android": {
-            "version_added": "≤12.1",
-            "version_removed": "60"
-          },
-          "safari": {
-            "version_added": "4",
-            "version_removed": "16"
-          },
-          "safari_ios": {
-            "version_added": "3",
-            "version_removed": "16"
-          },
-          "samsunginternet_android": "mirror",
-          "webview_android": {
-            "version_added": "≤37",
-            "version_removed": "85"
-          }
-        },
-        "status": {
-          "experimental": false,
-          "standard_track": false,
-          "deprecated": true
-        }
-      },
-      "abort": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "18",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "6",
-              "version_removed": "16"
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "cached_event": {
-        "__compat": {
-          "description": "<code>cached</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "checking_event": {
-        "__compat": {
-          "description": "<code>checking</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "downloading_event": {
-        "__compat": {
-          "description": "<code>downloading</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "error_event": {
-        "__compat": {
-          "description": "<code>error</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "noupdate_event": {
-        "__compat": {
-          "description": "<code>noupdate</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "obsolete_event": {
-        "__compat": {
-          "description": "<code>obsolete</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3.5",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "progress_event": {
-        "__compat": {
-          "description": "<code>progress</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "status": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": {
-              "version_added": "≤12.1",
-              "version_removed": "71"
-            },
-            "opera_android": {
-              "version_added": "≤12.1",
-              "version_removed": "60"
-            },
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "swapCache": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": {
-              "version_added": "≤12.1",
-              "version_removed": "71"
-            },
-            "opera_android": {
-              "version_added": "≤12.1",
-              "version_removed": "60"
-            },
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "update": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": {
-              "version_added": "≤12.1",
-              "version_removed": "71"
-            },
-            "opera_android": {
-              "version_added": "≤12.1",
-              "version_removed": "60"
-            },
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "updateready_event": {
-        "__compat": {
-          "description": "<code>updateready</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "5",
-              "version_removed": "85"
-            },
-            "chrome_android": "mirror",
-            "edge": {
-              "version_added": "12",
-              "version_removed": "86"
-            },
-            "firefox": {
-              "version_added": "3",
-              "version_removed": "84"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": "10"
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "4",
-              "version_removed": "16"
-            },
-            "safari_ios": {
-              "version_added": "3",
-              "version_removed": "16"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": "≤37",
-              "version_removed": "85"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/api/Attr.json b/api/Attr.json
index 645f163308667f..c177b93bc4f6b9 100644
--- a/api/Attr.json
+++ b/api/Attr.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioBuffer.json b/api/AudioBuffer.json
index 4bb8b9335fedf6..3b2b8a288f5c9a 100644
--- a/api/AudioBuffer.json
+++ b/api/AudioBuffer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioBuffer",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>AudioBuffer()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/AudioBuffer",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-audiobuffer",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55",
@@ -72,7 +79,8 @@
               "version_added": "6.0",
               "notes": "The <code>context</code> parameter was supported up until Samsung Internet 7.0, but has now been removed."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,6 +93,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/copyFromChannel",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-copyfromchannel",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "43"
@@ -108,7 +119,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,6 +133,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/copyToChannel",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-copytochannel",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "43"
@@ -144,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,6 +173,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/duration",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-duration",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -182,7 +201,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,6 +215,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/getChannelData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-getchanneldata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -220,7 +243,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,6 +257,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/length",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-length",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -258,7 +285,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,6 +299,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/numberOfChannels",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-numberofchannels",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -296,7 +327,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -309,6 +341,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBuffer/sampleRate",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffer-samplerate",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -334,7 +369,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioBufferSourceNode.json b/api/AudioBufferSourceNode.json
index 704039eb4d6b0a..cbe7be76ccef8a 100644
--- a/api/AudioBufferSourceNode.json
+++ b/api/AudioBufferSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioBufferSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>AudioBufferSourceNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/AudioBufferSourceNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-constructor-audiobuffersourcenode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/buffer",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-buffer",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -102,7 +113,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,6 +127,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/detune",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-detune",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "44"
@@ -138,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,6 +167,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/loop",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-loop",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -176,7 +195,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,6 +209,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/loopEnd",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-loopend",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -214,7 +237,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,6 +251,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/loopStart",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-loopstart",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -252,7 +279,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,6 +293,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/playbackRate",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-playbackrate",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -290,7 +321,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,6 +335,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/start",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiobuffersourcenode-start",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -328,7 +363,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioContext.json b/api/AudioContext.json
index 8552ba098197b5..4188aec7b20a22 100644
--- a/api/AudioContext.json
+++ b/api/AudioContext.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioContext",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": [
             {
@@ -41,7 +44,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,6 +58,9 @@
           "description": "<code>AudioContext()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/AudioContext",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-audiocontext",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": [
               {
@@ -147,7 +154,8 @@
                 "version_added": "≤37",
                 "version_removed": "57"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -248,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -262,6 +273,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/baseLatency",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-baselatency",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "58"
@@ -283,7 +297,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,6 +311,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/close",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-close",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -319,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,6 +351,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/createMediaElementSource",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-createmediaelementsource",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -358,7 +380,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -371,6 +394,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/createMediaStreamDestination",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-createmediastreamdestination",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "25"
@@ -394,7 +420,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -407,6 +434,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/createMediaStreamSource",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-createmediastreamsource",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "22"
@@ -432,7 +462,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -445,6 +476,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/createMediaStreamTrackSource",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-createmediastreamtracksource",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": false,
@@ -468,7 +502,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -502,7 +537,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -515,6 +551,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/getOutputTimestamp",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-getoutputtimestamp",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -536,7 +575,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -549,6 +589,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/outputLatency",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-outputlatency",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -570,7 +613,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -583,6 +627,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/resume",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-resume",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -606,7 +653,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -640,7 +688,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -675,7 +724,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -709,7 +759,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -722,6 +773,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioContext/suspend",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiocontext-suspend",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -745,7 +799,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioData.json b/api/AudioData.json
index 6ed0c31763f81e..8e64ba5accc1f5 100644
--- a/api/AudioData.json
+++ b/api/AudioData.json
@@ -14,9 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
+            "version_added": "130"
+          },
+          "firefox_android": {
             "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -28,10 +30,11 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
@@ -51,9 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -65,10 +70,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -88,9 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -102,10 +110,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -125,9 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -139,10 +150,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -162,9 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -176,10 +190,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -199,9 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -213,10 +230,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -236,9 +254,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -250,10 +270,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -273,9 +294,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -287,10 +310,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -310,9 +334,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -324,10 +350,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -347,9 +374,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -361,10 +390,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -384,9 +414,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -398,10 +430,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -421,9 +454,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -435,10 +470,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/AudioDecoder.json b/api/AudioDecoder.json
index 79d82fbef1877f..6fdffada957aac 100644
--- a/api/AudioDecoder.json
+++ b/api/AudioDecoder.json
@@ -14,10 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false,
-            "impl_url": "https://bugzil.la/1749044"
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -29,10 +30,11 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
@@ -52,10 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -67,10 +70,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -90,10 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -105,10 +110,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -128,10 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -143,10 +150,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -166,10 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -181,10 +190,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -204,10 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -219,10 +230,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -243,10 +255,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -258,10 +271,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -281,10 +295,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -296,10 +311,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -320,10 +336,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -335,10 +352,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -358,10 +376,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -373,10 +392,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -396,10 +416,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749044"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -411,10 +432,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/AudioDestinationNode.json b/api/AudioDestinationNode.json
index 42c44ccec562bc..c0c6551443dfef 100644
--- a/api/AudioDestinationNode.json
+++ b/api/AudioDestinationNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioDestinationNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioDestinationNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -41,6 +45,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioDestinationNode/maxChannelCount",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiodestinationnode-maxchannelcount",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "27"
@@ -74,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioEncoder.json b/api/AudioEncoder.json
index 0158b5265e17ae..442c17bd345c9f 100644
--- a/api/AudioEncoder.json
+++ b/api/AudioEncoder.json
@@ -14,10 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false,
-            "impl_url": "https://bugzil.la/1749046"
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -29,10 +30,11 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
@@ -52,10 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -67,10 +70,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -90,10 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -105,10 +110,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -128,10 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -143,10 +150,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -178,7 +186,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -214,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -250,7 +260,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -287,7 +298,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -313,10 +325,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -328,10 +341,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -351,10 +365,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -366,10 +381,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -389,10 +405,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -404,10 +421,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -427,10 +445,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -442,10 +461,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -466,10 +486,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -481,10 +502,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -504,10 +526,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -519,10 +542,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -542,10 +566,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1749046"
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -557,10 +582,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/AudioListener.json b/api/AudioListener.json
index 1608314ffe5416..5f8a0fbe686f90 100644
--- a/api/AudioListener.json
+++ b/api/AudioListener.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioListener",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -41,6 +45,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/forwardX",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-forwardx",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/forwardY",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-forwardy",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -98,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,6 +123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/forwardZ",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-forwardz",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -133,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,6 +162,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/positionX",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-positionx",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -168,7 +187,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,6 +201,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/positionY",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-positiony",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -203,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,6 +240,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/positionZ",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-positionz",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -238,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -276,7 +304,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +343,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -327,6 +357,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/upX",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-upx",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -349,7 +382,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -362,6 +396,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/upY",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-upy",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -384,7 +421,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,6 +435,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioListener/upZ",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audiolistener-upz",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -419,7 +460,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioNode.json b/api/AudioNode.json
index 35535e336c84c3..d3dda606233802 100644
--- a/api/AudioNode.json
+++ b/api/AudioNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -41,6 +45,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/channelCount",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-channelcount",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "27"
@@ -66,7 +73,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,6 +87,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/channelCountMode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-channelcountmode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "27"
@@ -104,7 +115,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,6 +129,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/channelInterpretation",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-channelinterpretation",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "27"
@@ -142,7 +157,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,6 +174,9 @@
             "https://webaudio.github.io/web-audio-api/#dom-audionode-connect",
             "https://webaudio.github.io/web-audio-api/#dom-audionode-connect-destinationparam-output"
           ],
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -183,7 +202,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,6 +216,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/context",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-context",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -221,7 +244,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,6 +258,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/disconnect",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-disconnect",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -259,7 +286,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -293,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -328,7 +357,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -342,6 +372,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/numberOfInputs",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-numberofinputs",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -367,7 +400,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -380,6 +414,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioNode/numberOfOutputs",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audionode-numberofoutputs",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -405,7 +442,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioParam.json b/api/AudioParam.json
index 759328df4679cb..9a51f32273a09b 100644
--- a/api/AudioParam.json
+++ b/api/AudioParam.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioParam",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
       "automationRate": {
         "__compat": {
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-automationrate",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "68"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/cancelAndHoldAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-cancelandholdattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -97,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,6 +122,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/cancelScheduledValues",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-cancelscheduledvalues",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -135,7 +150,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,6 +164,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/defaultValue",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-defaultvalue",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -173,7 +192,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,6 +206,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/exponentialRampToValueAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-exponentialramptovalueattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -221,7 +244,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,6 +258,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/linearRampToValueAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-linearramptovalueattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -269,7 +296,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,6 +310,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/maxValue",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-maxvalue",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -303,7 +334,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -316,6 +348,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/minValue",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-minvalue",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -337,7 +372,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,6 +386,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/setTargetAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-settargetattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -375,7 +414,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -388,6 +428,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/setValueAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-setvalueattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -413,7 +456,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -426,6 +470,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/setValueCurveAtTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-setvaluecurveattime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -451,7 +498,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -464,6 +512,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParam/value",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioparam-value",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -493,7 +544,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioParamMap.json b/api/AudioParamMap.json
index fd282a8963d6dc..62183e7c39ffdb 100644
--- a/api/AudioParamMap.json
+++ b/api/AudioParamMap.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioParamMap",
         "spec_url": "https://webaudio.github.io/web-audio-api/#audioparammap",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "66"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +192,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +292,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioProcessingEvent.json b/api/AudioProcessingEvent.json
index bc344af81de405..03d1e9ef3afa63 100644
--- a/api/AudioProcessingEvent.json
+++ b/api/AudioProcessingEvent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,7 +135,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioScheduledSourceNode.json b/api/AudioScheduledSourceNode.json
index 6e275dfba3ddd6..699ece146019d8 100644
--- a/api/AudioScheduledSourceNode.json
+++ b/api/AudioScheduledSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioScheduledSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": [
             {
@@ -69,7 +72,8 @@
               "partial_implementation": true,
               "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -82,6 +86,9 @@
           "description": "<code>ended</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode/ended_event",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-onended",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -107,7 +114,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,6 +128,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode/start",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-start",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -143,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode/stop",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-stop",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -179,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioSession.json b/api/AudioSession.json
index 93a6ca031b5ad4..84f8fd35178856 100644
--- a/api/AudioSession.json
+++ b/api/AudioSession.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/AudioSinkInfo.json b/api/AudioSinkInfo.json
index 51c3ae3b2aad0c..3d986e8321eed3 100644
--- a/api/AudioSinkInfo.json
+++ b/api/AudioSinkInfo.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/AudioTrack.json b/api/AudioTrack.json
index f3499b2204bc5c..947c814b9a8e0f 100644
--- a/api/AudioTrack.json
+++ b/api/AudioTrack.json
@@ -57,7 +57,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -122,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,7 +324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -386,7 +391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -446,7 +452,8 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioTrackList.json b/api/AudioTrackList.json
index b86d60ba8b334a..46118bc93d2052 100644
--- a/api/AudioTrackList.json
+++ b/api/AudioTrackList.json
@@ -57,7 +57,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -126,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -328,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioWorklet.json b/api/AudioWorklet.json
index e257f37118d46f..2dd6fe5d7c3116 100644
--- a/api/AudioWorklet.json
+++ b/api/AudioWorklet.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorklet",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioWorklet",
+        "tags": [
+          "web-features:audio-worklet"
+        ],
         "support": {
           "chrome": {
             "version_added": "66"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/AudioWorkletGlobalScope.json b/api/AudioWorkletGlobalScope.json
index 4862236bb70dbf..09e5697e9232cf 100644
--- a/api/AudioWorkletGlobalScope.json
+++ b/api/AudioWorkletGlobalScope.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioWorkletGlobalScope",
+        "tags": [
+          "web-features:audio-worklet"
+        ],
         "support": {
           "chrome": {
             "version_added": "66"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -37,6 +41,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/currentFrame",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletglobalscope-currentframe",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -58,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,6 +79,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/currentTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletglobalscope-currenttime",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -92,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,6 +117,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/registerProcessor",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletglobalscope-registerprocessor",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -126,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,6 +155,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/sampleRate",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletglobalscope-samplerate",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -160,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioWorkletNode.json b/api/AudioWorkletNode.json
index 5d258518401bce..5e330e1ef2042c 100644
--- a/api/AudioWorkletNode.json
+++ b/api/AudioWorkletNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioWorkletNode",
+        "tags": [
+          "web-features:audio-worklet"
+        ],
         "support": {
           "chrome": {
             "version_added": "66"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>AudioWorkletNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletNode/AudioWorkletNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletnode-audioworkletnode",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletNode/parameters",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletnode-parameters",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,6 +118,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletNode/port",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletnode-port",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -127,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,6 +157,9 @@
           "description": "<code>processorerror</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletNode/processorerror_event",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletnode-onprocessorerror",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -162,7 +181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AudioWorkletProcessor.json b/api/AudioWorkletProcessor.json
index 40228fc68c8317..33023d86febc92 100644
--- a/api/AudioWorkletProcessor.json
+++ b/api/AudioWorkletProcessor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletProcessor",
         "spec_url": "https://webaudio.github.io/web-audio-api/#AudioWorkletProcessor",
+        "tags": [
+          "web-features:audio-worklet"
+        ],
         "support": {
           "chrome": {
             "version_added": "64"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>AudioWorkletProcessor()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletProcessor/AudioWorkletProcessor",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletprocessor-audioworkletprocessor",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioWorkletProcessor/port",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-audioworkletprocessor-port",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AuthenticatorAssertionResponse.json b/api/AuthenticatorAssertionResponse.json
index 234aeb2c594497..e3403f97354168 100644
--- a/api/AuthenticatorAssertionResponse.json
+++ b/api/AuthenticatorAssertionResponse.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse",
         "spec_url": "https://w3c.github.io/webauthn/#iface-authenticatorassertionresponse",
+        "tags": [
+          "web-features:webauthn"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -44,7 +47,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,6 +60,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/authenticatorData",
           "spec_url": "https://w3c.github.io/webauthn/#dom-authenticatorassertionresponse-authenticatordata",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -96,7 +103,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,6 +117,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/signature",
           "spec_url": "https://w3c.github.io/webauthn/#dom-authenticatorassertionresponse-signature",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -149,7 +160,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,6 +174,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/userHandle",
           "spec_url": "https://w3c.github.io/webauthn/#dom-authenticatorassertionresponse-userhandle",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -202,7 +217,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AuthenticatorAttestationResponse.json b/api/AuthenticatorAttestationResponse.json
index 584092ecc46716..0042f4538e99f2 100644
--- a/api/AuthenticatorAttestationResponse.json
+++ b/api/AuthenticatorAttestationResponse.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse",
         "spec_url": "https://w3c.github.io/webauthn/#authenticatorattestationresponse",
+        "tags": [
+          "web-features:webauthn"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -44,7 +47,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,6 +60,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse/attestationObject",
           "spec_url": "https://w3c.github.io/webauthn/#dom-authenticatorattestationresponse-attestationobject",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -96,7 +103,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +143,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +183,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,7 +223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +260,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/AuthenticatorResponse.json b/api/AuthenticatorResponse.json
index 26204e84f15dca..071d075c32338d 100644
--- a/api/AuthenticatorResponse.json
+++ b/api/AuthenticatorResponse.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorResponse",
         "spec_url": "https://w3c.github.io/webauthn/#authenticatorresponse",
+        "tags": [
+          "web-features:webauthn"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -44,7 +47,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,6 +60,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AuthenticatorResponse/clientDataJSON",
           "spec_url": "https://w3c.github.io/webauthn/#dom-authenticatorresponse-clientdatajson",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -96,7 +103,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BackgroundFetchEvent.json b/api/BackgroundFetchEvent.json
index 89dcfa1bc0d304..4fd94aa80fb24a 100644
--- a/api/BackgroundFetchEvent.json
+++ b/api/BackgroundFetchEvent.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BackgroundFetchManager.json b/api/BackgroundFetchManager.json
index 545a47c4bc7167..5a69a1513f3841 100644
--- a/api/BackgroundFetchManager.json
+++ b/api/BackgroundFetchManager.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BackgroundFetchRecord.json b/api/BackgroundFetchRecord.json
index 325d3b80f5c925..42b3144d8b26dd 100644
--- a/api/BackgroundFetchRecord.json
+++ b/api/BackgroundFetchRecord.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BackgroundFetchRegistration.json b/api/BackgroundFetchRegistration.json
index 56fd51e3a3385e..f9118589ca9aac 100644
--- a/api/BackgroundFetchRegistration.json
+++ b/api/BackgroundFetchRegistration.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -185,7 +189,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -224,7 +229,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -263,7 +269,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -302,7 +309,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -342,7 +350,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -381,7 +390,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -420,7 +430,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -459,7 +470,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -498,7 +510,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BackgroundFetchUpdateUIEvent.json b/api/BackgroundFetchUpdateUIEvent.json
index 3948a0d2b0d044..a28c12bfea9a59 100644
--- a/api/BackgroundFetchUpdateUIEvent.json
+++ b/api/BackgroundFetchUpdateUIEvent.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BarProp.json b/api/BarProp.json
index 70617075c0e123..3a0b5bf141015e 100644
--- a/api/BarProp.json
+++ b/api/BarProp.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/api/BarcodeDetector.json b/api/BarcodeDetector.json
index 23d9f351196110..5653887b19d76f 100644
--- a/api/BarcodeDetector.json
+++ b/api/BarcodeDetector.json
@@ -61,7 +61,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -122,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -183,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -245,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BaseAudioContext.json b/api/BaseAudioContext.json
index 71d7b1722bf6a0..a7ed1e330c3a21 100644
--- a/api/BaseAudioContext.json
+++ b/api/BaseAudioContext.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext",
         "spec_url": "https://webaudio.github.io/web-audio-api/#BaseAudioContext",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": [
             {
@@ -69,7 +72,8 @@
               "partial_implementation": true,
               "notes": "The <code>BaseAudioContext</code> interface itself is not present, but many of the methods are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioContext'><code>AudioContext</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OfflineAudioContext'><code>OfflineAudioContext</code></a> interfaces."
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,6 +85,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/audioWorklet",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-audioworklet",
+          "tags": [
+            "web-features:audio-worklet"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -102,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,6 +123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createAnalyser",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createanalyser",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -140,7 +151,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -153,6 +165,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createBiquadFilter",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbiquadfilter",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -178,7 +193,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,6 +207,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createBuffer",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffer",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -216,7 +235,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,6 +249,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createBufferSource",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffersource",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -254,7 +277,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,6 +291,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createChannelMerger",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createchannelmerger",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -292,7 +319,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,6 +333,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createChannelSplitter",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createchannelsplitter",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -330,7 +361,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,6 +375,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createConstantSource",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createconstantsource",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -364,7 +399,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -377,6 +413,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createConvolver",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createconvolver",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -402,7 +441,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -415,6 +455,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createDelay",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createdelay",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -440,7 +483,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -453,6 +497,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createDynamicsCompressor",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createdynamicscompressor",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -478,7 +525,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -491,6 +539,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createGain",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-creategain",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -516,7 +567,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -529,6 +581,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createIIRFilter",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createiirfilter",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -552,7 +607,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -565,6 +621,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createOscillator",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createoscillator",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -588,7 +647,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -601,6 +661,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createPanner",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createpanner",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -626,7 +689,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -639,6 +703,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createPeriodicWave",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createperiodicwave",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -662,7 +729,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -696,7 +764,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -735,7 +804,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -748,6 +818,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createStereoPanner",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createstereopanner",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -771,7 +844,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -784,6 +858,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/createWaveShaper",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createwaveshaper",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -809,7 +886,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -822,6 +900,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/currentTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-currenttime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -847,7 +928,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -860,6 +942,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/decodeAudioData",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-decodeaudiodata",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -885,7 +970,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -919,7 +1005,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -933,6 +1020,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/destination",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-destination",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -958,7 +1048,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -971,6 +1062,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/listener",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-listener",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -996,7 +1090,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1009,6 +1104,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/sampleRate",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-samplerate",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -1034,7 +1132,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1047,6 +1146,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/state",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-state",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -1070,7 +1172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1084,6 +1187,9 @@
           "description": "<code>statechange</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BaseAudioContext/statechange_event",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-onstatechange",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -1107,7 +1213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BatteryManager.json b/api/BatteryManager.json
index b1aa570c88d003..2689f603745568 100644
--- a/api/BatteryManager.json
+++ b/api/BatteryManager.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -179,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,7 +309,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -337,7 +345,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -376,7 +385,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BeforeInstallPromptEvent.json b/api/BeforeInstallPromptEvent.json
index 0b14ed55a67c6e..516345fc833185 100644
--- a/api/BeforeInstallPromptEvent.json
+++ b/api/BeforeInstallPromptEvent.json
@@ -26,7 +26,8 @@
           "samsunginternet_android": {
             "version_added": "5.0"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -61,7 +62,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -174,7 +178,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BeforeUnloadEvent.json b/api/BeforeUnloadEvent.json
index 751a067866aa1d..50cb72809a354f 100644
--- a/api/BeforeUnloadEvent.json
+++ b/api/BeforeUnloadEvent.json
@@ -34,7 +34,8 @@
           },
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -84,7 +85,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BiquadFilterNode.json b/api/BiquadFilterNode.json
index 66775efdf8d765..7f3abb6b9cc310 100644
--- a/api/BiquadFilterNode.json
+++ b/api/BiquadFilterNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#BiquadFilterNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>BiquadFilterNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/BiquadFilterNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-biquadfilternode-context-options",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/Q",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-q",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/detune",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-detune",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "25"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/frequency",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-frequency",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -177,7 +196,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/gain",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-gain",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -215,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,6 +252,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/getFrequencyResponse",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-getfrequencyresponse",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "17"
@@ -253,7 +280,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,6 +294,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/type",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-biquadfilternode-type",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -291,7 +322,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Blob.json b/api/Blob.json
index 13e3bca737f0ed..9cd26eeb995ece 100644
--- a/api/Blob.json
+++ b/api/Blob.json
@@ -48,7 +48,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -96,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +141,8 @@
               "version_added": "14.5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +296,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +382,8 @@
               "version_added": "14.5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +429,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BlobEvent.json b/api/BlobEvent.json
index 3f0a4223092572..3ab8a5dfd05c79 100644
--- a/api/BlobEvent.json
+++ b/api/BlobEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Bluetooth.json b/api/Bluetooth.json
index 8c37b7da8fb5e0..7f880ccdf9c2f3 100644
--- a/api/Bluetooth.json
+++ b/api/Bluetooth.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -131,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -172,7 +175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +212,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -245,7 +250,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/BluetoothCharacteristicProperties.json b/api/BluetoothCharacteristicProperties.json
index 10249efc468650..39093cdae963db 100644
--- a/api/BluetoothCharacteristicProperties.json
+++ b/api/BluetoothCharacteristicProperties.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -290,7 +296,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -331,7 +338,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -372,7 +380,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -413,7 +422,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothDevice.json b/api/BluetoothDevice.json
index 7166d9156a71b2..240cc91ed5b232 100644
--- a/api/BluetoothDevice.json
+++ b/api/BluetoothDevice.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothRemoteGATTCharacteristic.json b/api/BluetoothRemoteGATTCharacteristic.json
index 31236b44e46f4b..ac47483c301bec 100644
--- a/api/BluetoothRemoteGATTCharacteristic.json
+++ b/api/BluetoothRemoteGATTCharacteristic.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -88,7 +89,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -129,7 +131,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -211,7 +215,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -252,7 +257,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -293,7 +299,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -334,7 +341,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -375,7 +383,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -416,7 +425,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -457,7 +467,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -495,7 +506,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -536,7 +548,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -577,7 +590,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothRemoteGATTDescriptor.json b/api/BluetoothRemoteGATTDescriptor.json
index b15729149564ee..745e92d152fd8e 100644
--- a/api/BluetoothRemoteGATTDescriptor.json
+++ b/api/BluetoothRemoteGATTDescriptor.json
@@ -47,7 +47,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -89,7 +90,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -132,7 +134,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -218,7 +222,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -261,7 +266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothRemoteGATTServer.json b/api/BluetoothRemoteGATTServer.json
index 0230eb8b5a56ee..4c34e38eb9a5bd 100644
--- a/api/BluetoothRemoteGATTServer.json
+++ b/api/BluetoothRemoteGATTServer.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -290,7 +296,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothRemoteGATTService.json b/api/BluetoothRemoteGATTService.json
index 1dea36a994f1e7..2f28cd17b8cb22 100644
--- a/api/BluetoothRemoteGATTService.json
+++ b/api/BluetoothRemoteGATTService.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BluetoothUUID.json b/api/BluetoothUUID.json
index 3c15298f879280..28a2a6d664333c 100644
--- a/api/BluetoothUUID.json
+++ b/api/BluetoothUUID.json
@@ -45,7 +45,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/1100993"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -86,7 +87,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -128,7 +130,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -212,7 +216,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BroadcastChannel.json b/api/BroadcastChannel.json
index 0fa8c210eea7a9..2f8819f2aa585d 100644
--- a/api/BroadcastChannel.json
+++ b/api/BroadcastChannel.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -99,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -354,7 +360,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/BrowserCaptureMediaStreamTrack.json b/api/BrowserCaptureMediaStreamTrack.json
index 26f9504e02d096..83812da73ac805 100644
--- a/api/BrowserCaptureMediaStreamTrack.json
+++ b/api/BrowserCaptureMediaStreamTrack.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/BufferedChangeEvent.json b/api/BufferedChangeEvent.json
index 497b027bb2b99d..fbf244e33d884a 100644
--- a/api/BufferedChangeEvent.json
+++ b/api/BufferedChangeEvent.json
@@ -26,7 +26,8 @@
             "version_added": "17.1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -61,7 +62,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -131,7 +134,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ByteLengthQueuingStrategy.json b/api/ByteLengthQueuingStrategy.json
index c7ef4d3d924f97..bcb0c6d31a07a2 100644
--- a/api/ByteLengthQueuingStrategy.json
+++ b/api/ByteLengthQueuingStrategy.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -91,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CDATASection.json b/api/CDATASection.json
index 4330bf13660b2c..b96086d82555b5 100644
--- a/api/CDATASection.json
+++ b/api/CDATASection.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/CSPViolationReportBody.json b/api/CSPViolationReportBody.json
index cf3b3b56fc128b..0e7262b130d6d6 100644
--- a/api/CSPViolationReportBody.json
+++ b/api/CSPViolationReportBody.json
@@ -11,7 +11,14 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false
+            "version_added": "130",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "dom.reporting.enabled",
+                "value_to_set": "true"
+              }
+            ]
           },
           "firefox_android": "mirror",
           "ie": {
@@ -31,7 +38,8 @@
           "samsunginternet_android": {
             "version_added": "10.0"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +77,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +117,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +157,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +197,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +237,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +277,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +317,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +357,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +397,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +437,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +477,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,7 +516,8 @@
             "samsunginternet_android": {
               "version_added": "10.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSS.json b/api/CSS.json
index 10145c60aaa716..f1bc3e95b6636b 100644
--- a/api/CSS.json
+++ b/api/CSS.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -277,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -313,7 +321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -349,7 +358,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -385,7 +395,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +432,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -457,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -493,7 +506,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -529,7 +543,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -565,7 +580,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -601,7 +617,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -637,7 +654,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -673,7 +691,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -709,7 +728,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -745,7 +765,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -781,7 +802,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -817,7 +839,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -852,7 +875,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -888,7 +912,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -924,7 +949,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -960,7 +986,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -999,7 +1026,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1034,7 +1062,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1070,7 +1099,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1106,7 +1136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1141,7 +1172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1177,7 +1209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1213,7 +1246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1249,7 +1283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1285,7 +1320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1321,7 +1357,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1357,7 +1394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1393,7 +1431,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1429,7 +1468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1465,7 +1505,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1505,7 +1546,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1541,7 +1583,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1577,7 +1620,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1613,7 +1657,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1649,7 +1694,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1685,7 +1731,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1720,7 +1767,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1755,7 +1803,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1793,7 +1842,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1829,7 +1879,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1864,7 +1915,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1899,7 +1951,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1934,7 +1987,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1970,7 +2024,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2039,7 +2094,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2075,7 +2131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2111,7 +2168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2147,7 +2205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2183,7 +2242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2219,7 +2279,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2255,7 +2316,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2291,7 +2353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2328,7 +2391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2364,7 +2428,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2401,7 +2466,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2437,7 +2503,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2473,7 +2540,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2509,7 +2577,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSAnimation.json b/api/CSSAnimation.json
index 6a67b30b19946f..6a1ce34db18266 100644
--- a/api/CSSAnimation.json
+++ b/api/CSSAnimation.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSConditionRule.json b/api/CSSConditionRule.json
index cbfbdec2cc9127..809579ba643af6 100644
--- a/api/CSSConditionRule.json
+++ b/api/CSSConditionRule.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSContainerRule.json b/api/CSSContainerRule.json
index e5f98c67aa3f2b..d432ac6a83741d 100644
--- a/api/CSSContainerRule.json
+++ b/api/CSSContainerRule.json
@@ -3,7 +3,7 @@
     "CSSContainerRule": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSContainerRule",
-        "spec_url": "https://drafts.csswg.org/css-contain-3/#the-csscontainerrule-interface",
+        "spec_url": "https://drafts.csswg.org/css-conditional-5/#the-csscontainerrule-interface",
         "tags": [
           "web-features:container-queries"
         ],
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,7 +40,7 @@
       "containerName": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSContainerRule/containerName",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#dom-csscontainerrule-containername",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#dom-csscontainerrule-containername",
           "tags": [
             "web-features:container-queries"
           ],
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +78,7 @@
       "containerQuery": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSContainerRule/containerQuery",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#dom-csscontainerrule-containerquery",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#dom-csscontainerrule-containerquery",
           "tags": [
             "web-features:container-queries"
           ],
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSCounterStyleRule.json b/api/CSSCounterStyleRule.json
index 373cfaee1194da..9834261472bd85 100644
--- a/api/CSSCounterStyleRule.json
+++ b/api/CSSCounterStyleRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +407,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSFontFaceRule.json b/api/CSSFontFaceRule.json
index cd46918fb50234..929f33f399f1af 100644
--- a/api/CSSFontFaceRule.json
+++ b/api/CSSFontFaceRule.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSFontFaceRule",
         "spec_url": "https://drafts.csswg.org/css-fonts/#om-fontface",
+        "tags": [
+          "web-features:font-face"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSFontFaceRule/style",
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfacerule-style",
+          "tags": [
+            "web-features:font-face"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -70,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSFontFeatureValuesMap.json b/api/CSSFontFeatureValuesMap.json
new file mode 100644
index 00000000000000..231b823235eb89
--- /dev/null
+++ b/api/CSSFontFeatureValuesMap.json
@@ -0,0 +1,412 @@
+{
+  "api": {
+    "CSSFontFeatureValuesMap": {
+      "__compat": {
+        "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+        "support": {
+          "chrome": {
+            "version_added": "111"
+          },
+          "chrome_android": "mirror",
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "clear": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "delete": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "entries": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "forEach": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "get": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "has": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "keys": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "set": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesmap-set",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "size": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "values": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "@@iterator": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesmap",
+          "support": {
+            "chrome": {
+              "version_added": "111"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/CSSFontFeatureValuesRule.json b/api/CSSFontFeatureValuesRule.json
index ba801644972261..660179b3532672 100644
--- a/api/CSSFontFeatureValuesRule.json
+++ b/api/CSSFontFeatureValuesRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +40,9 @@
       "annotation": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-annotation",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -60,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -72,6 +77,9 @@
       "characterVariant": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-charactervariant",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -93,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -130,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,6 +152,9 @@
       "ornaments": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-ornaments",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -163,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,6 +189,9 @@
       "styleset": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-styleset",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -196,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,6 +226,9 @@
       "stylistic": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-stylistic",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -229,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -241,6 +263,9 @@
       "swash": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-fonts/#dom-cssfontfeaturevaluesrule-swash",
+          "tags": [
+            "web-features:font-variant-alternates"
+          ],
           "support": {
             "chrome": {
               "version_added": "111"
@@ -262,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CSSFontPaletteValuesRule.json b/api/CSSFontPaletteValuesRule.json
index 2aef66b55a0077..a89656ab3ce1f2 100644
--- a/api/CSSFontPaletteValuesRule.json
+++ b/api/CSSFontPaletteValuesRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSGroupingRule.json b/api/CSSGroupingRule.json
index a41138ae4326ce..5f7e3aa31bb2f8 100644
--- a/api/CSSGroupingRule.json
+++ b/api/CSSGroupingRule.json
@@ -34,7 +34,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSImageValue.json b/api/CSSImageValue.json
index 5942845372e89e..4b0730b092322e 100644
--- a/api/CSSImageValue.json
+++ b/api/CSSImageValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/CSSImportRule.json b/api/CSSImportRule.json
index 07f1a5c8f8ff11..8825eeed3ef0b5 100644
--- a/api/CSSImportRule.json
+++ b/api/CSSImportRule.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSImportRule",
         "spec_url": "https://drafts.csswg.org/cssom/#the-cssimportrule-interface",
+        "tags": [
+          "web-features:import"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSImportRule/href",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-cssimportrule-href",
+          "tags": [
+            "web-features:import"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -70,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,6 +129,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSImportRule/media",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-cssimportrule-media",
+          "tags": [
+            "web-features:import"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -147,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,8 +171,11 @@
       },
       "styleSheet": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSImportRule/stylesheet",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSImportRule/styleSheet",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-cssimportrule-stylesheet",
+          "tags": [
+            "web-features:import"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -187,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSKeyframeRule.json b/api/CSSKeyframeRule.json
index 26421f51264d53..73bc91944cefd5 100644
--- a/api/CSSKeyframeRule.json
+++ b/api/CSSKeyframeRule.json
@@ -83,7 +83,8 @@
               "version_added": "1",
               "version_removed": "4.4.3"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -124,7 +125,8 @@
               "version_added": "4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSKeyframesRule.json b/api/CSSKeyframesRule.json
index b1c9d13140050b..ac13dcbb267308 100644
--- a/api/CSSKeyframesRule.json
+++ b/api/CSSKeyframesRule.json
@@ -93,7 +93,8 @@
               "version_added": "1",
               "version_removed": "4.4.3"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -174,7 +175,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,7 +216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,6 +310,7 @@
       },
       "length": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSKeyframesRule/length",
           "spec_url": "https://drafts.csswg.org/css-animations/#dom-csskeyframesrule-length",
           "support": {
             "chrome": {
@@ -327,7 +333,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,7 +374,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSKeywordValue.json b/api/CSSKeywordValue.json
index 907d688c8c155c..6d7159d9ac0035 100644
--- a/api/CSSKeywordValue.json
+++ b/api/CSSKeywordValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSLayerBlockRule.json b/api/CSSLayerBlockRule.json
index 5a9fa795a11654..d4f3c4f65cce43 100644
--- a/api/CSSLayerBlockRule.json
+++ b/api/CSSLayerBlockRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSLayerStatementRule.json b/api/CSSLayerStatementRule.json
index d7104e76b154e0..e919896c4ace51 100644
--- a/api/CSSLayerStatementRule.json
+++ b/api/CSSLayerStatementRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathClamp.json b/api/CSSMathClamp.json
index d1701e8623a00e..65a804950bb796 100644
--- a/api/CSSMathClamp.json
+++ b/api/CSSMathClamp.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathInvert.json b/api/CSSMathInvert.json
index abdce44ca516bf..759a409c734050 100644
--- a/api/CSSMathInvert.json
+++ b/api/CSSMathInvert.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathMax.json b/api/CSSMathMax.json
index 00047aafcabcec..4be255cc57bf51 100644
--- a/api/CSSMathMax.json
+++ b/api/CSSMathMax.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathMin.json b/api/CSSMathMin.json
index ae67629540ac37..f83bbb7955fb9c 100644
--- a/api/CSSMathMin.json
+++ b/api/CSSMathMin.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathNegate.json b/api/CSSMathNegate.json
index d0932ebb8a89a4..94bc5b7fd31fca 100644
--- a/api/CSSMathNegate.json
+++ b/api/CSSMathNegate.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathProduct.json b/api/CSSMathProduct.json
index ba61fa739b5a58..b398868d107fc6 100644
--- a/api/CSSMathProduct.json
+++ b/api/CSSMathProduct.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathSum.json b/api/CSSMathSum.json
index e7e07133ea0169..cc12fea3b7c74d 100644
--- a/api/CSSMathSum.json
+++ b/api/CSSMathSum.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMathValue.json b/api/CSSMathValue.json
index b0aad10e56df33..27fd16e28e5b6d 100644
--- a/api/CSSMathValue.json
+++ b/api/CSSMathValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMatrixComponent.json b/api/CSSMatrixComponent.json
index 61e9bd69b11716..634d7b46236a31 100644
--- a/api/CSSMatrixComponent.json
+++ b/api/CSSMatrixComponent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSMediaRule.json b/api/CSSMediaRule.json
index 367ba0ceca0c5c..3ec051803d30b5 100644
--- a/api/CSSMediaRule.json
+++ b/api/CSSMediaRule.json
@@ -34,7 +34,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSNamespaceRule.json b/api/CSSNamespaceRule.json
index 484c0280a161bf..2396f55a881b7a 100644
--- a/api/CSSNamespaceRule.json
+++ b/api/CSSNamespaceRule.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSNumericArray.json b/api/CSSNumericArray.json
index a5d546a3b613c1..2ea09bd9b85b52 100644
--- a/api/CSSNumericArray.json
+++ b/api/CSSNumericArray.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -89,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +124,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +193,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSNumericValue.json b/api/CSSNumericValue.json
index 30aef630efe5ff..76281e54ef6d87 100644
--- a/api/CSSNumericValue.json
+++ b/api/CSSNumericValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +241,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +279,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -307,7 +315,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +351,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -377,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -412,7 +423,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSPageDescriptors.json b/api/CSSPageDescriptors.json
index 23e464fe2c976e..98251faf07da17 100644
--- a/api/CSSPageDescriptors.json
+++ b/api/CSSPageDescriptors.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -35,6 +36,7 @@
       },
       "margin": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margin",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margin",
           "support": {
             "chrome": {
@@ -57,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,6 +71,7 @@
       },
       "margin-bottom": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margin-bottom",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margin-bottom",
           "support": {
             "chrome": {
@@ -90,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,6 +106,7 @@
       },
       "margin-left": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margin-left",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margin-left",
           "support": {
             "chrome": {
@@ -123,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,6 +141,7 @@
       },
       "margin-right": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margin-right",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margin-right",
           "support": {
             "chrome": {
@@ -156,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,6 +176,7 @@
       },
       "margin-top": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margin-top",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margin-top",
           "support": {
             "chrome": {
@@ -189,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -200,6 +211,7 @@
       },
       "marginBottom": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#marginbottom",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-marginbottom",
           "support": {
             "chrome": {
@@ -222,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -233,6 +246,7 @@
       },
       "marginLeft": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#marginleft",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-marginleft",
           "support": {
             "chrome": {
@@ -255,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -266,6 +281,7 @@
       },
       "marginRight": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#marginright",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-marginright",
           "support": {
             "chrome": {
@@ -288,7 +304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -299,6 +316,7 @@
       },
       "marginTop": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#margintop",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-margintop",
           "support": {
             "chrome": {
@@ -321,7 +339,78 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "page-orientation": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#page-orientation",
+          "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-page-orientation",
+          "support": {
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "129"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "pageOrientation": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#pageorientation",
+          "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-pageorientation",
+          "support": {
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "129"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -332,6 +421,7 @@
       },
       "size": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#size",
           "spec_url": "https://drafts.csswg.org/cssom/#dom-csspagedescriptors-size",
           "support": {
             "chrome": {
@@ -354,7 +444,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CSSPageRule.json b/api/CSSPageRule.json
index 27ba0ab7dad80a..77fecabe680203 100644
--- a/api/CSSPageRule.json
+++ b/api/CSSPageRule.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/CSSPerspective.json b/api/CSSPerspective.json
index 14c1eb650499ae..9edbb796e99a7e 100644
--- a/api/CSSPerspective.json
+++ b/api/CSSPerspective.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSPositionTryDescriptors.json b/api/CSSPositionTryDescriptors.json
index de791e83188d1d..81878eb4fce313 100644
--- a/api/CSSPositionTryDescriptors.json
+++ b/api/CSSPositionTryDescriptors.json
@@ -14,8 +14,15 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false,
-            "impl_url": "https://bugzil.la/1838746"
+            "version_added": "131",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "layout.css.anchor-positioning.enabled",
+                "value_to_set": "true"
+              }
+            ],
+            "impl_url": "https://bugzil.la/1909346"
           },
           "firefox_android": "mirror",
           "ie": {
@@ -29,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -51,8 +59,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -66,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -89,8 +105,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -104,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,8 +151,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -142,7 +173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -165,8 +197,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -180,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -203,8 +243,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -218,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -241,8 +289,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -256,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -279,8 +335,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -294,7 +357,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -317,8 +381,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -332,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -355,8 +427,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -370,7 +449,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -393,8 +473,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -408,7 +495,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -431,8 +519,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -446,7 +541,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -469,8 +565,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -484,7 +587,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -507,8 +611,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -522,7 +633,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -545,8 +657,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -560,7 +679,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -583,8 +703,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -598,7 +725,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -621,8 +749,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -636,7 +771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -659,8 +795,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -674,7 +817,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -697,8 +841,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -712,7 +863,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -735,8 +887,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -750,7 +909,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -773,8 +933,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -788,7 +955,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -811,8 +979,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -826,7 +1001,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -849,8 +1025,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -864,7 +1047,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -887,8 +1071,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -902,7 +1093,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -925,8 +1117,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -940,7 +1139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -963,8 +1163,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -978,7 +1185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1001,8 +1209,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1016,7 +1231,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1039,8 +1255,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1054,7 +1277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1077,8 +1301,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1092,7 +1323,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1115,8 +1347,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1130,7 +1369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1153,8 +1393,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1168,7 +1415,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1191,8 +1439,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1206,7 +1461,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1229,8 +1485,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1244,7 +1507,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1267,8 +1531,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1282,7 +1553,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1305,8 +1577,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1320,7 +1599,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1343,8 +1623,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1358,7 +1645,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1381,8 +1669,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1396,7 +1691,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1419,8 +1715,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1434,7 +1737,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1457,8 +1761,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1472,7 +1783,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1495,8 +1807,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1510,7 +1829,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1533,8 +1853,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1548,7 +1875,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1571,8 +1899,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1586,7 +1921,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1609,8 +1945,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1624,7 +1967,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1647,8 +1991,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1662,7 +2013,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1685,8 +2037,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1700,7 +2059,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1723,8 +2083,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1738,7 +2105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1761,8 +2129,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1776,7 +2151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1799,8 +2175,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1814,7 +2197,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1837,8 +2221,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1852,7 +2243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1875,8 +2267,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1890,7 +2289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1913,8 +2313,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1928,7 +2335,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1951,8 +2359,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -1966,7 +2381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1989,8 +2405,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2004,7 +2427,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2027,8 +2451,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2042,7 +2473,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2065,8 +2497,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2080,7 +2519,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2103,8 +2543,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2118,7 +2565,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2141,8 +2589,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2156,7 +2611,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2179,8 +2635,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2194,7 +2657,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2217,8 +2681,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2232,7 +2703,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2255,8 +2727,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2270,7 +2749,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2293,8 +2773,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2308,7 +2795,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2331,8 +2819,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2346,7 +2841,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2369,8 +2865,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2384,7 +2887,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2407,8 +2911,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2422,7 +2933,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2445,8 +2957,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2460,7 +2979,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2477,15 +2997,27 @@
             "web-features:anchor-positioning"
           ],
           "support": {
-            "chrome": {
-              "alternative_name": "inset-area",
-              "version_added": "125"
-            },
+            "chrome": [
+              {
+                "version_added": "129"
+              },
+              {
+                "alternative_name": "inset-area",
+                "version_added": "125"
+              }
+            ],
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2499,7 +3031,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2522,8 +3055,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2537,7 +3077,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2554,15 +3095,27 @@
             "web-features:anchor-positioning"
           ],
           "support": {
-            "chrome": {
-              "alternative_name": "insetArea",
-              "version_added": "125"
-            },
+            "chrome": [
+              {
+                "version_added": "129"
+              },
+              {
+                "alternative_name": "insetArea",
+                "version_added": "125"
+              }
+            ],
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2576,7 +3129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2599,8 +3153,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2614,7 +3175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2637,8 +3199,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2652,7 +3221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2675,8 +3245,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2690,7 +3267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CSSPositionTryRule.json b/api/CSSPositionTryRule.json
index 9cfc44e7cdce63..28b8da79b5cfa4 100644
--- a/api/CSSPositionTryRule.json
+++ b/api/CSSPositionTryRule.json
@@ -14,8 +14,15 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false,
-            "impl_url": "https://bugzil.la/1838746"
+            "version_added": "131",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "layout.css.anchor-positioning.enabled",
+                "value_to_set": "true"
+              }
+            ],
+            "impl_url": "https://bugzil.la/1909346"
           },
           "firefox_android": "mirror",
           "ie": {
@@ -29,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -51,8 +59,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -66,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -89,8 +105,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "131",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.anchor-positioning.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1909346"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -104,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CSSPositionValue.json b/api/CSSPositionValue.json
index e09d70a7ef7852..f8696345c3fff9 100644
--- a/api/CSSPositionValue.json
+++ b/api/CSSPositionValue.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSPrimitiveValue.json b/api/CSSPrimitiveValue.json
index 9261a2c859f06b..73ad1544648607 100644
--- a/api/CSSPrimitiveValue.json
+++ b/api/CSSPrimitiveValue.json
@@ -34,7 +34,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -187,7 +191,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +302,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +340,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSPropertyRule.json b/api/CSSPropertyRule.json
index de5d6edf975560..d35e08a981a980 100644
--- a/api/CSSPropertyRule.json
+++ b/api/CSSPropertyRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +77,7 @@
       },
       "initialValue": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPropertyRule/initialvalue",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSPropertyRule/initialValue",
           "spec_url": "https://drafts.css-houdini.org/css-properties-values-api/#dom-csspropertyrule-initialvalue",
           "tags": [
             "web-features:registered-custom-properties"
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSPseudoElement.json b/api/CSSPseudoElement.json
index f974becea33c1e..8b5d64f4a559cf 100644
--- a/api/CSSPseudoElement.json
+++ b/api/CSSPseudoElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CSSRotate.json b/api/CSSRotate.json
index 45739ea32a905e..9d640f343e8080 100644
--- a/api/CSSRotate.json
+++ b/api/CSSRotate.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSRule.json b/api/CSSRule.json
index ab4058e71bf761..3ece1777863b46 100644
--- a/api/CSSRule.json
+++ b/api/CSSRule.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSRuleList.json b/api/CSSRuleList.json
index e657dc7a6410dd..07eac16e7a822b 100644
--- a/api/CSSRuleList.json
+++ b/api/CSSRuleList.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSScale.json b/api/CSSScale.json
index 6c98b79408d604..483b2d8f8f44cf 100644
--- a/api/CSSScale.json
+++ b/api/CSSScale.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSScopeRule.json b/api/CSSScopeRule.json
index ee3adfc9356f29..77f277f49b21a8 100644
--- a/api/CSSScopeRule.json
+++ b/api/CSSScopeRule.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSSkew.json b/api/CSSSkew.json
index f50be421efe23e..25c91b26d88e8d 100644
--- a/api/CSSSkew.json
+++ b/api/CSSSkew.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSSkewX.json b/api/CSSSkewX.json
index c0caa2648fea8f..a350f0b9d2ab22 100644
--- a/api/CSSSkewX.json
+++ b/api/CSSSkewX.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSSkewY.json b/api/CSSSkewY.json
index 5e59394f616868..db3dce1605c5c8 100644
--- a/api/CSSSkewY.json
+++ b/api/CSSSkewY.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSStartingStyleRule.json b/api/CSSStartingStyleRule.json
index 0fa3e08d4e892f..3fe188ae00e656 100644
--- a/api/CSSStartingStyleRule.json
+++ b/api/CSSStartingStyleRule.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/CSSStyleDeclaration.json b/api/CSSStyleDeclaration.json
index 635b9a9726fbb8..8ec3b10ee16bc5 100644
--- a/api/CSSStyleDeclaration.json
+++ b/api/CSSStyleDeclaration.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
               "version_added": "4.4",
               "version_removed": "41",
               "impl_url": "https://crbug.com/331608"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -238,7 +243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -318,7 +325,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -354,7 +362,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -394,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +444,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -469,7 +480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSStyleRule.json b/api/CSSStyleRule.json
index 4e0fb1c3d341f6..617be851c3b2f4 100644
--- a/api/CSSStyleRule.json
+++ b/api/CSSStyleRule.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSStyleSheet.json b/api/CSSStyleSheet.json
index 07b7231732b399..87f78414a84b52 100644
--- a/api/CSSStyleSheet.json
+++ b/api/CSSStyleSheet.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -183,7 +187,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,7 +306,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -340,7 +348,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -379,7 +388,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,7 +426,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -453,7 +464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -489,7 +501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSStyleValue.json b/api/CSSStyleValue.json
index bd3f4563745f8c..d08303ab0edba3 100644
--- a/api/CSSStyleValue.json
+++ b/api/CSSStyleValue.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSSupportsRule.json b/api/CSSSupportsRule.json
index fb86d2d3fef1f3..295e496cf3d4e9 100644
--- a/api/CSSSupportsRule.json
+++ b/api/CSSSupportsRule.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSSupportsRule",
         "spec_url": "https://drafts.csswg.org/css-conditional-3/#the-csssupportsrule-interface",
+        "tags": [
+          "web-features:supports"
+        ],
         "support": {
           "chrome": {
             "version_added": "28"
@@ -37,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/CSSTransformComponent.json b/api/CSSTransformComponent.json
index a5d6b96add1944..e958548b36781f 100644
--- a/api/CSSTransformComponent.json
+++ b/api/CSSTransformComponent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSTransformValue.json b/api/CSSTransformValue.json
index d5352eecc53a44..006cffa3e3526a 100644
--- a/api/CSSTransformValue.json
+++ b/api/CSSTransformValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +239,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -268,7 +275,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -336,7 +345,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSTransition.json b/api/CSSTransition.json
index 77f54baf14ef04..a15f4d2731f86b 100644
--- a/api/CSSTransition.json
+++ b/api/CSSTransition.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSTranslate.json b/api/CSSTranslate.json
index 5d3e5bac53c9c8..8292a69c78ee5a 100644
--- a/api/CSSTranslate.json
+++ b/api/CSSTranslate.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSUnitValue.json b/api/CSSUnitValue.json
index 33bfa1ddf1728f..940c50bd90e6ef 100644
--- a/api/CSSUnitValue.json
+++ b/api/CSSUnitValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSUnparsedValue.json b/api/CSSUnparsedValue.json
index b9ee060d1c97a9..43d211d39e9ef4 100644
--- a/api/CSSUnparsedValue.json
+++ b/api/CSSUnparsedValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -232,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +273,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSValue.json b/api/CSSValue.json
index 64032141acdb35..c0d53c5e2d84eb 100644
--- a/api/CSSValue.json
+++ b/api/CSSValue.json
@@ -27,7 +27,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSValueList.json b/api/CSSValueList.json
index 4d12cf7f501ecd..876eac85e849ff 100644
--- a/api/CSSValueList.json
+++ b/api/CSSValueList.json
@@ -27,7 +27,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSVariableReferenceValue.json b/api/CSSVariableReferenceValue.json
index be54efb34d75a2..ffc0592a3ae956 100644
--- a/api/CSSVariableReferenceValue.json
+++ b/api/CSSVariableReferenceValue.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CSSViewTransitionRule.json b/api/CSSViewTransitionRule.json
index e85e907a5ada7b..1c55277923ead0 100644
--- a/api/CSSViewTransitionRule.json
+++ b/api/CSSViewTransitionRule.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -56,7 +57,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -89,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Cache.json b/api/Cache.json
index 2121c24dea8a5e..d9fbe3009d65f5 100644
--- a/api/Cache.json
+++ b/api/Cache.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": {
             "version_added": "4.0"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
               "version_added": "4.0",
               "notes": "Requires HTTPS from Samsung Internet 5.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +281,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -317,7 +324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +368,8 @@
               "version_added": "4.0",
               "notes": "Requires HTTPS from Samsung Internet 5.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CacheStorage.json b/api/CacheStorage.json
index 47beadfca294c1..8f1b57ac26891c 100644
--- a/api/CacheStorage.json
+++ b/api/CacheStorage.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -318,7 +325,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CanMakePaymentEvent.json b/api/CanMakePaymentEvent.json
index bdaa11d108275b..ea8190ec8eadbe 100644
--- a/api/CanMakePaymentEvent.json
+++ b/api/CanMakePaymentEvent.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +136,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +172,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +209,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -239,7 +245,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CanvasCaptureMediaStreamTrack.json b/api/CanvasCaptureMediaStreamTrack.json
index 5aa2a75903c923..80b2ad39a545c0 100644
--- a/api/CanvasCaptureMediaStreamTrack.json
+++ b/api/CanvasCaptureMediaStreamTrack.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CanvasFilter.json b/api/CanvasFilter.json
index 5c27f94ef024c8..7a57963e6f43e6 100644
--- a/api/CanvasFilter.json
+++ b/api/CanvasFilter.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CanvasGradient.json b/api/CanvasGradient.json
index a36688fd7a0732..80bf5c9d4e8ee5 100644
--- a/api/CanvasGradient.json
+++ b/api/CanvasGradient.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasGradient",
         "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#canvasgradient",
+        "tags": [
+          "web-features:canvas-2d"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -34,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -46,6 +50,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasGradient/addColorStop",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasgradient-addcolorstop-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -73,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CanvasPattern.json b/api/CanvasPattern.json
index b2dcc6867941ac..6c6010d8217cd2 100644
--- a/api/CanvasPattern.json
+++ b/api/CanvasPattern.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/api/CanvasRenderingContext2D.json b/api/CanvasRenderingContext2D.json
index b0e6530bbd336d..fdad0319770380 100644
--- a/api/CanvasRenderingContext2D.json
+++ b/api/CanvasRenderingContext2D.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D",
         "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#2dcontext",
+        "tags": [
+          "web-features:canvas-2d"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/arc",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-arc-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -72,7 +79,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,6 +93,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/arcTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-arcto-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -112,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,6 +137,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/beginPath",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-beginpath-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -152,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,6 +181,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/bezierCurveTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-beziercurveto-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -192,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,6 +225,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-canvas-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -234,7 +257,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -247,6 +271,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/clearRect",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-clearrect-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -274,7 +301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,6 +315,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/clip",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-clip-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -314,7 +345,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -348,7 +380,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -362,6 +395,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/closePath",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-closepath-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -389,7 +425,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -440,7 +477,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -453,6 +491,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/createImageData",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createimagedata-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -482,7 +523,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -495,6 +537,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/createLinearGradient",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createlineargradient-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -522,7 +567,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -535,6 +581,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/createPattern",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createpattern-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -562,7 +611,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -575,6 +625,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/createRadialGradient",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createradialgradient-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -602,7 +655,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -615,6 +669,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/direction",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-direction-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "77"
@@ -636,7 +693,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -649,6 +707,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/drawFocusIfNeeded",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-drawfocusifneeded-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -678,7 +739,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -712,7 +774,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -726,6 +789,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/drawImage",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-drawimage-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -753,7 +819,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -787,7 +854,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -822,7 +890,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -836,6 +905,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/ellipse",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-ellipse-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "31"
@@ -859,7 +931,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -872,6 +945,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fill",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fill-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -899,7 +975,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -933,7 +1010,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -947,6 +1025,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fillRect",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fillrect-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -974,7 +1055,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -987,6 +1069,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fillStyle",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fillstyle-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1014,7 +1099,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1028,7 +1114,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fillText",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-filltext-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -1059,7 +1145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1072,6 +1159,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/filter",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-filter-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -1094,7 +1184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1107,6 +1198,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/font",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-font-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -1136,7 +1230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1149,6 +1244,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fontKerning",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fontkerning",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -1170,7 +1268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1183,6 +1282,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fontStretch",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fontstretch",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -1204,7 +1306,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1217,6 +1320,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/fontVariantCaps",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-fontvariantcaps",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -1238,7 +1344,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1251,6 +1358,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/getContextAttributes",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#2dcontext:dom-context-2d-canvas-getcontextattributes-2",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": [
               {
@@ -1278,7 +1388,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1291,6 +1402,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/getImageData",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-getimagedata-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -1321,7 +1435,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1334,6 +1449,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/getLineDash",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-getlinedash-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -1357,7 +1475,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1370,6 +1489,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/getTransform",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-gettransform-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "68"
@@ -1391,7 +1513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1404,6 +1527,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/globalAlpha",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-globalalpha-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1431,7 +1557,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1444,6 +1571,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/globalCompositeOperation",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-globalcompositeoperation-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1471,7 +1601,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1484,6 +1615,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/imageSmoothingEnabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-imagesmoothingenabled-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -1508,7 +1642,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1521,6 +1656,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/imageSmoothingQuality",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-imagesmoothingquality-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "54"
@@ -1542,7 +1680,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1579,7 +1718,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1592,6 +1732,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/isPointInPath",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-ispointinpath-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1619,7 +1762,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1653,7 +1797,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1667,6 +1812,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/isPointInStroke",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-ispointinstroke-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "26"
@@ -1688,7 +1836,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1720,7 +1869,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1734,6 +1884,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/letterSpacing",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-letterspacing",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -1755,7 +1908,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1768,6 +1922,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/lineCap",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-linecap-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1795,7 +1952,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1808,6 +1966,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/lineDashOffset",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-linedashoffset-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -1837,7 +1998,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1850,6 +2012,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/lineJoin",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-linejoin-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1877,7 +2042,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1890,6 +2056,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/lineTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-lineto-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1917,7 +2086,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1930,6 +2100,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/lineWidth",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-linewidth-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1957,7 +2130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1971,7 +2145,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/measureText",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-measuretext-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -2002,7 +2176,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2015,6 +2190,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/miterLimit",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-miterlimit-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2042,7 +2220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2055,6 +2234,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/moveTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-moveto-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2082,7 +2264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2095,6 +2278,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/putImageData",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-putimagedata-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -2124,7 +2310,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2137,6 +2324,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/quadraticCurveTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-quadraticcurveto-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2166,7 +2356,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2179,6 +2370,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/rect",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-rect-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2206,7 +2400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2243,7 +2438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2256,6 +2452,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/resetTransform",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-resettransform-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "31"
@@ -2277,7 +2476,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2290,6 +2490,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/restore",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-restore-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2317,7 +2520,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2330,6 +2534,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/rotate",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-rotate-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2357,7 +2564,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2394,7 +2602,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2407,6 +2616,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/save",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-save-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2434,7 +2646,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2447,6 +2660,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/scale",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-scale-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2474,7 +2690,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2487,6 +2704,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/setLineDash",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-setlinedash-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -2510,7 +2730,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2523,6 +2744,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/setTransform",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-settransform-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -2552,7 +2776,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2584,7 +2809,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2598,6 +2824,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/shadowBlur",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowblur-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2625,7 +2854,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2638,6 +2868,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/shadowColor",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowcolor-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2665,7 +2898,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2678,6 +2912,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/shadowOffsetX",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowoffsetx-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2705,7 +2942,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2718,6 +2956,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/shadowOffsetY",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowoffsety-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2745,7 +2986,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2758,6 +3000,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/stroke",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-stroke-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2785,7 +3030,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2819,7 +3065,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2833,6 +3080,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/strokeRect",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-strokerect-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2860,7 +3110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2873,6 +3124,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/strokeStyle",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-strokestyle-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2900,7 +3154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2914,7 +3169,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/strokeText",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-stroketext-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -2945,7 +3200,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2959,7 +3215,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/textAlign",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-textalign-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -2990,7 +3246,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3004,7 +3261,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/textBaseline",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-textbaseline-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -3035,7 +3292,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3048,6 +3306,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/textRendering",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-textrendering",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -3069,7 +3330,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3082,6 +3344,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/transform",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-transform-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -3109,7 +3374,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3122,6 +3388,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/translate",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-translate-dev",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -3149,7 +3418,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3162,6 +3432,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/wordSpacing",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-wordspacing",
+          "tags": [
+            "web-features:canvas-2d"
+          ],
           "support": {
             "chrome": {
               "version_added": "99"
@@ -3183,7 +3456,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CaptureController.json b/api/CaptureController.json
index cd95d96ca3553c..fa641256163a32 100644
--- a/api/CaptureController.json
+++ b/api/CaptureController.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CaretPosition.json b/api/CaretPosition.json
index 22632f2bdb8788..8154c18d3a6677 100644
--- a/api/CaretPosition.json
+++ b/api/CaretPosition.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ChannelMergerNode.json b/api/ChannelMergerNode.json
index 71c4eb46ef2417..e88c6aa581da31 100644
--- a/api/ChannelMergerNode.json
+++ b/api/ChannelMergerNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ChannelMergerNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#ChannelMergerNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>ChannelMergerNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ChannelMergerNode/ChannelMergerNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-channelmergernode-constructor-channelmergernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ChannelSplitterNode.json b/api/ChannelSplitterNode.json
index c94f92fcff9428..b9419cdac4a8e0 100644
--- a/api/ChannelSplitterNode.json
+++ b/api/ChannelSplitterNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ChannelSplitterNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#ChannelSplitterNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14",
@@ -31,7 +34,8 @@
           "webview_android": {
             "version_added": "4.4.3",
             "notes": "Starting in version 56, <code>channelCountMode</code> is set to <code>explicit</code> and <code>channelCount</code> is fixed to the number of outputs, as per the latest spec."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
           "description": "<code>ChannelSplitterNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ChannelSplitterNode/ChannelSplitterNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-channelsplitternode-constructor-channelsplitternode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -65,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ChapterInformation.json b/api/ChapterInformation.json
index 2f18cc9781c6b6..58936e06e7dea3 100644
--- a/api/ChapterInformation.json
+++ b/api/ChapterInformation.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CharacterBoundsUpdateEvent.json b/api/CharacterBoundsUpdateEvent.json
index 313a12b495b90c..81047390adc7d5 100644
--- a/api/CharacterBoundsUpdateEvent.json
+++ b/api/CharacterBoundsUpdateEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/CharacterData.json b/api/CharacterData.json
index fc629e5a314298..8f81ef93c14191 100644
--- a/api/CharacterData.json
+++ b/api/CharacterData.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,7 +231,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +272,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,7 +313,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,7 +424,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -454,7 +465,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -492,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -532,7 +545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Client.json b/api/Client.json
index 76d50173881533..804d7bec484fce 100644
--- a/api/Client.json
+++ b/api/Client.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -62,7 +65,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -98,7 +104,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -134,7 +143,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -170,7 +182,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -206,7 +221,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/Clients.json b/api/Clients.json
index 2e7efe357377be..c746d8a17e4c86 100644
--- a/api/Clients.json
+++ b/api/Clients.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -62,7 +65,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -98,7 +104,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -148,7 +157,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -189,7 +201,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -234,7 +249,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/Clipboard.json b/api/Clipboard.json
index 281486e23e6135..527187d0445adc 100644
--- a/api/Clipboard.json
+++ b/api/Clipboard.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,6 +85,9 @@
             "description": "<code>formats.unsanitized</code> parameter",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/Clipboard/read#unsanitized",
             "spec_url": "https://w3c.github.io/clipboard-apis/#dictdef-clipboardunsanitizedformats",
+            "tags": [
+              "web-features:clipboard-unsanitized-formats"
+            ],
             "support": {
               "chrome": {
                 "version_added": "122"
@@ -104,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -148,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,6 +167,9 @@
       "type_image-png": {
         "__compat": {
           "description": "Supports <code>image/png</code> MIME type",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "76"
@@ -181,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,6 +204,9 @@
       "type_text-html": {
         "__compat": {
           "description": "Supports <code>text/html</code> MIME type",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -214,7 +228,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,6 +241,9 @@
       "type_text-plain": {
         "__compat": {
           "description": "Supports <code>text/plain</code> MIME type",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -247,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +362,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ClipboardEvent.json b/api/ClipboardEvent.json
index cc0cf35bc434c1..c66b7ef0829136 100644
--- a/api/ClipboardEvent.json
+++ b/api/ClipboardEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ClipboardEvent",
         "spec_url": "https://w3c.github.io/clipboard-apis/#clipboard-event-interfaces",
+        "tags": [
+          "web-features:clipboard-events"
+        ],
         "support": {
           "chrome": {
             "version_added": "41"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
           "description": "<code>ClipboardEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ClipboardEvent/ClipboardEvent",
           "spec_url": "https://w3c.github.io/clipboard-apis/#dom-clipboardevent-clipboardevent",
+          "tags": [
+            "web-features:clipboard-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "58"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ClipboardEvent/clipboardData",
           "spec_url": "https://w3c.github.io/clipboard-apis/#clipboardevent-clipboarddata",
+          "tags": [
+            "web-features:clipboard-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -99,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ClipboardItem.json b/api/ClipboardItem.json
index b67fed2d624cc1..d112246c95d65a 100644
--- a/api/ClipboardItem.json
+++ b/api/ClipboardItem.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -85,7 +86,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,6 +216,9 @@
         "__compat": {
           "description": "Support for <code>image/svg+xml</code> MIME type.",
           "spec_url": "https://w3c.github.io/clipboard-apis/#optional-data-types",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "124"
@@ -232,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -245,6 +254,9 @@
         "__compat": {
           "description": "Support for custom formats starting with <code>web </code>.",
           "spec_url": "https://w3c.github.io/clipboard-apis/#optional-data-types",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "104"
@@ -266,7 +278,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -305,7 +318,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CloseEvent.json b/api/CloseEvent.json
index d03402d3407395..e384b7710a1dd8 100644
--- a/api/CloseEvent.json
+++ b/api/CloseEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CloseEvent",
         "spec_url": "https://websockets.spec.whatwg.org/#the-closeevent-interface",
+        "tags": [
+          "web-features:websockets"
+        ],
         "support": {
           "chrome": {
             "version_added": "15"
@@ -40,7 +43,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -53,6 +57,9 @@
           "description": "<code>CloseEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CloseEvent/CloseEvent",
           "spec_url": "https://websockets.spec.whatwg.org/#dom-closeevent-closeevent",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "16"
@@ -83,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,6 +104,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CloseEvent/code",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-closeevent-code②",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -126,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,6 +151,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CloseEvent/reason",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-closeevent-reason②",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -169,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,6 +198,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CloseEvent/wasClean",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-closeevent-wasclean②",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -212,7 +231,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CloseWatcher.json b/api/CloseWatcher.json
index cae04afbf349ee..2b870c0a4b0449 100644
--- a/api/CloseWatcher.json
+++ b/api/CloseWatcher.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -94,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -163,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -197,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -231,7 +237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/InvokeEvent.json b/api/CommandEvent.json
similarity index 92%
rename from api/InvokeEvent.json
rename to api/CommandEvent.json
index 1ba58cfebfc114..6d2ec34527a9b2 100644
--- a/api/InvokeEvent.json
+++ b/api/CommandEvent.json
@@ -1,6 +1,6 @@
 {
   "api": {
-    "InvokeEvent": {
+    "CommandEvent": {
       "__compat": {
         "support": {
           "chrome": {
@@ -46,7 +46,8 @@
             "version_added": false
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -54,9 +55,9 @@
           "deprecated": false
         }
       },
-      "InvokeEvent": {
+      "CommandEvent": {
         "__compat": {
-          "description": "<code>InvokeEvent()</code> constructor",
+          "description": "<code>CommandEvent()</code> constructor",
           "support": {
             "chrome": {
               "version_added": "preview",
@@ -101,7 +102,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -110,7 +112,7 @@
           }
         }
       },
-      "action": {
+      "command": {
         "__compat": {
           "support": {
             "chrome": {
@@ -154,7 +156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,7 @@
           }
         }
       },
-      "invoker": {
+      "source": {
         "__compat": {
           "support": {
             "chrome": {
@@ -207,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Comment.json b/api/Comment.json
index 3637a32d763674..926262672f7cc3 100644
--- a/api/Comment.json
+++ b/api/Comment.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CompositionEvent.json b/api/CompositionEvent.json
index 3f0294ae2ed50d..fa489b3e8f92d0 100644
--- a/api/CompositionEvent.json
+++ b/api/CompositionEvent.json
@@ -29,7 +29,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +148,8 @@
             "samsunginternet_android": {
               "version_added": "1.5"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CompressionStream.json b/api/CompressionStream.json
index 4f6474aac7bfa9..b70aa76989350c 100644
--- a/api/CompressionStream.json
+++ b/api/CompressionStream.json
@@ -44,7 +44,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -87,7 +88,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ConstantSourceNode.json b/api/ConstantSourceNode.json
index 2fb4bd0f8e7071..e441d4facfe7a0 100644
--- a/api/ConstantSourceNode.json
+++ b/api/ConstantSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#ConstantSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>ConstantSourceNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode/ConstantSourceNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-constantsourcenode-constructor-constantsourcenode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode/offset",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-constantsourcenode-offset",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ContactAddress.json b/api/ContactAddress.json
index d37a27a4b0bcff..003bfb41d3b6ae 100644
--- a/api/ContactAddress.json
+++ b/api/ContactAddress.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress",
         "spec_url": "https://w3c.github.io/contact-picker/#contactaddress",
+        "tags": [
+          "web-features:contact-picker"
+        ],
         "support": {
           "chrome": {
             "version_added": false
@@ -33,7 +36,8 @@
             "partial_implementation": true,
             "notes": "This API was exposed but failed upon opening a contact selector."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/addressLine",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-addressline",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -74,7 +81,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -87,6 +95,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/city",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-city",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -116,7 +127,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -129,6 +141,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/country",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-country",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -158,7 +173,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,6 +187,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/dependentLocality",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-dependentlocality",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -200,7 +219,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -213,6 +233,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/organization",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-organization",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -242,7 +265,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -255,6 +279,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/phone",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-phone",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -284,7 +311,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -297,6 +325,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/postalCode",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-postalcode",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -326,7 +357,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -339,6 +371,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/recipient",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-recipient",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -368,7 +403,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -381,6 +417,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/region",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-region",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -410,7 +449,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -423,6 +463,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/sortingCode",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-sortingcode",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -452,7 +495,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -465,6 +509,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactAddress/toJSON",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-contactaddress-tojson",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -494,7 +541,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ContactsManager.json b/api/ContactsManager.json
index 450a97bcd3f54f..7e1555d3f17fa9 100644
--- a/api/ContactsManager.json
+++ b/api/ContactsManager.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactsManager",
         "spec_url": "https://w3c.github.io/contact-picker/#contacts-manager",
+        "tags": [
+          "web-features:contact-picker"
+        ],
         "support": {
           "chrome": {
             "version_added": false
@@ -41,7 +44,8 @@
             "partial_implementation": true,
             "notes": "This API was exposed but failed upon opening a contact selector."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -53,6 +57,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactsManager/getProperties",
           "spec_url": "https://w3c.github.io/contact-picker/#contacts-manager-getproperties",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -90,7 +97,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -103,6 +111,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContactsManager/select",
           "spec_url": "https://w3c.github.io/contact-picker/#contacts-manager-select",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -140,7 +151,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ContentIndex.json b/api/ContentIndex.json
index d837fc46415935..ff122ebd446c08 100644
--- a/api/ContentIndex.json
+++ b/api/ContentIndex.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ContentIndexEvent.json b/api/ContentIndexEvent.json
index 8a902544d30cf3..24c83c62805b97 100644
--- a/api/ContentIndexEvent.json
+++ b/api/ContentIndexEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ContentVisibilityAutoStateChangeEvent.json b/api/ContentVisibilityAutoStateChangeEvent.json
index d09069c80d397d..96560b1a0f6cf8 100644
--- a/api/ContentVisibilityAutoStateChangeEvent.json
+++ b/api/ContentVisibilityAutoStateChangeEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ConvolverNode.json b/api/ConvolverNode.json
index 6e47e1b10a5027..4ba6fc6c16db68 100644
--- a/api/ConvolverNode.json
+++ b/api/ConvolverNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConvolverNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#ConvolverNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>ConvolverNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConvolverNode/ConvolverNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-convolvernode-constructor-convolvernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConvolverNode/buffer",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-convolvernode-buffer",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConvolverNode/normalize",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-convolvernode-normalize",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "18"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CookieChangeEvent.json b/api/CookieChangeEvent.json
index 5562aeaef65826..78c022822083d0 100644
--- a/api/CookieChangeEvent.json
+++ b/api/CookieChangeEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/CookieStore.json b/api/CookieStore.json
index 398bb0b3eca12d..83fa47be14c731 100644
--- a/api/CookieStore.json
+++ b/api/CookieStore.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -166,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -234,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +274,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -302,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +344,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/CookieStoreManager.json b/api/CookieStoreManager.json
index ac4d2a4480da52..067f19b698f443 100644
--- a/api/CookieStoreManager.json
+++ b/api/CookieStoreManager.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CountQueuingStrategy.json b/api/CountQueuingStrategy.json
index 8176399f00e737..27591bddb82c87 100644
--- a/api/CountQueuingStrategy.json
+++ b/api/CountQueuingStrategy.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -91,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Counter.json b/api/Counter.json
index 11a95202cc1e20..6dcd76bad7923e 100644
--- a/api/Counter.json
+++ b/api/Counter.json
@@ -27,7 +27,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Credential.json b/api/Credential.json
index 4626012df8a3cb..9e5055afcd06c9 100644
--- a/api/Credential.json
+++ b/api/Credential.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Credential",
         "spec_url": "https://w3c.github.io/webappsec-credential-management/#the-credential-interface",
+        "tags": [
+          "web-features:credential-management"
+        ],
         "support": {
           "chrome": {
             "version_added": "51"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Credential/id",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credential-id",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,6 +118,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Credential/type",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credential-type",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -132,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CredentialsContainer.json b/api/CredentialsContainer.json
index 7652517cd396e7..79b9331e9e135f 100644
--- a/api/CredentialsContainer.json
+++ b/api/CredentialsContainer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CredentialsContainer",
         "spec_url": "https://w3c.github.io/webappsec-credential-management/#credentialscontainer",
+        "tags": [
+          "web-features:credential-management"
+        ],
         "support": {
           "chrome": {
             "version_added": "51"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CredentialsContainer/create",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialscontainer-create",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "60"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,6 +82,9 @@
           "__compat": {
             "description": "<code>publicKey</code> option",
             "spec_url": "https://w3c.github.io/webauthn/#sctn-credentialcreationoptions-extension",
+            "tags": [
+              "web-features:webauthn"
+            ],
             "support": {
               "chrome": {
                 "version_added": "67"
@@ -101,7 +112,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,6 +125,9 @@
             "__compat": {
               "description": "<code>create()</code> extensions",
               "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredentialcreationoptions-extensions",
+              "tags": [
+                "web-features:webauthn"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "67"
@@ -140,7 +155,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -153,6 +169,9 @@
                 "description": "<code>appidExclude</code> extension",
                 "mdn_url": "https://developer.mozilla.org/docs/Web/API/Web_Authentication_API/WebAuthn_extensions#appidexclude",
                 "spec_url": "https://w3c.github.io/webauthn/#sctn-appid-exclude-extension",
+                "tags": [
+                  "web-features:webauthn"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "67"
@@ -180,7 +199,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -219,7 +239,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -255,7 +276,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -286,16 +308,17 @@
                   "opera": "mirror",
                   "opera_android": "mirror",
                   "safari": {
-                    "version_added": false
+                    "version_added": "17"
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
-                  "experimental": true,
+                  "experimental": false,
                   "standard_track": true,
                   "deprecated": false
                 }
@@ -328,7 +351,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -365,7 +389,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -403,7 +428,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -443,7 +469,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -458,6 +485,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CredentialsContainer/get",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialscontainer-get",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -481,7 +511,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -492,7 +523,10 @@
         "identity_option": {
           "__compat": {
             "description": "<code>identity</code> option",
-            "spec_url": "https://fedidcg.github.io/FedCM/#dom-credentialrequestoptions-identity",
+            "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-credentialrequestoptions-identity",
+            "tags": [
+              "web-features:fedcm"
+            ],
             "support": {
               "chrome": {
                 "version_added": "108"
@@ -516,7 +550,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -527,7 +562,7 @@
           "context_option": {
             "__compat": {
               "description": "<code>identity.context</code>",
-              "spec_url": "https://fedidcg.github.io/FedCM/#dom-identitycredentialrequestoptions-context",
+              "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identitycredentialrequestoptions-context",
               "support": {
                 "chrome": {
                   "version_added": "116"
@@ -551,7 +586,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -586,7 +622,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -598,7 +635,7 @@
           "loginHint": {
             "__compat": {
               "description": "<code>identity.providers.loginHint</code>",
-              "spec_url": "https://fedidcg.github.io/FedCM/#dom-identityproviderrequestoptions-loginhint",
+              "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identityproviderrequestoptions-loginhint",
               "support": {
                 "chrome": {
                   "version_added": "116"
@@ -622,7 +659,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -636,6 +674,9 @@
           "__compat": {
             "description": "<code>otp</code> option",
             "spec_url": "https://wicg.github.io/web-otp/#dom-credentialrequestoptions-otp",
+            "tags": [
+              "web-features:web-otp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "93"
@@ -661,7 +702,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -674,6 +716,9 @@
           "__compat": {
             "description": "<code>publicKey</code> option",
             "spec_url": "https://w3c.github.io/webauthn/#sctn-credentialrequestoptions-extension",
+            "tags": [
+              "web-features:webauthn"
+            ],
             "support": {
               "chrome": {
                 "version_added": "67"
@@ -701,7 +746,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -713,6 +759,9 @@
             "__compat": {
               "description": "<code>get()</code> extensions",
               "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredentialrequestoptions-extensions",
+              "tags": [
+                "web-features:webauthn"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "67"
@@ -740,7 +789,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -752,6 +802,9 @@
               "__compat": {
                 "description": "<code>appid</code> extension",
                 "spec_url": "https://w3c.github.io/webauthn/#sctn-appid-extension",
+                "tags": [
+                  "web-features:webauthn"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "67"
@@ -779,7 +832,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -815,7 +869,8 @@
                   "samsunginternet_android": "mirror",
                   "webview_android": {
                     "version_added": false
-                  }
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -831,6 +886,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CredentialsContainer/preventSilentAccess",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialscontainer-preventsilentaccess",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": [
               {
@@ -869,7 +927,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -882,6 +941,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CredentialsContainer/store",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialscontainer-store",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -903,7 +965,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CropTarget.json b/api/CropTarget.json
index ac8770a4940f12..7d2923fe43f2de 100644
--- a/api/CropTarget.json
+++ b/api/CropTarget.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Crypto.json b/api/Crypto.json
index 97a12e50ceb355..4cd74bc611476f 100644
--- a/api/Crypto.json
+++ b/api/Crypto.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Crypto",
         "spec_url": "https://w3c.github.io/webcrypto/#crypto-interface",
+        "tags": [
+          "web-features:web-cryptography"
+        ],
         "support": {
           "chrome": {
             "version_added": "11"
@@ -55,7 +58,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,6 +72,9 @@
           "description": "<code>getRandomValues()</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues",
           "spec_url": "https://w3c.github.io/webcrypto/#Crypto-method-getRandomValues",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "11"
@@ -101,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,6 +123,9 @@
           "description": "<code>randomUUID()</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Crypto/randomUUID",
           "spec_url": "https://w3c.github.io/webcrypto/#Crypto-method-randomUUID",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "92"
@@ -149,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,6 +174,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Crypto/subtle",
           "spec_url": "https://w3c.github.io/webcrypto/#Crypto-attribute-subtle",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -198,7 +213,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +252,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/api/CryptoKey.json b/api/CryptoKey.json
index 71009b4f1cebb4..90ddd6a79f0420 100644
--- a/api/CryptoKey.json
+++ b/api/CryptoKey.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CryptoKey",
         "spec_url": "https://w3c.github.io/webcrypto/#cryptokey-interface",
+        "tags": [
+          "web-features:web-cryptography"
+        ],
         "support": {
           "chrome": {
             "version_added": "37"
@@ -33,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CryptoKey/algorithm",
           "spec_url": "https://w3c.github.io/webcrypto/#dom-cryptokey-algorithm",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -74,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,6 +95,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CryptoKey/extractable",
           "spec_url": "https://w3c.github.io/webcrypto/#dom-cryptokey-extractable",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -123,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,6 +148,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CryptoKey/type",
           "spec_url": "https://w3c.github.io/webcrypto/#dom-cryptokey-type",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -165,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,6 +194,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CryptoKey/usages",
           "spec_url": "https://w3c.github.io/webcrypto/#dom-cryptokey-usages",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -207,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CustomElementRegistry.json b/api/CustomElementRegistry.json
index 80a887bc42785f..fc44d7bc95fce6 100644
--- a/api/CustomElementRegistry.json
+++ b/api/CustomElementRegistry.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +282,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CustomEvent.json b/api/CustomEvent.json
index 3fcd0d2fc4fc76..08abed16ae7441 100644
--- a/api/CustomEvent.json
+++ b/api/CustomEvent.json
@@ -47,7 +47,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -99,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,7 +196,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +246,8 @@
             },
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/CustomStateSet.json b/api/CustomStateSet.json
index 1fdf7db251a865..81a5ec199fc461 100644
--- a/api/CustomStateSet.json
+++ b/api/CustomStateSet.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet",
         "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#customstateset",
+        "tags": [
+          "web-features:state"
+        ],
         "support": {
           "chrome": {
             "version_added": "90"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -37,6 +41,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/add",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -58,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,6 +79,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/clear",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -92,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,6 +117,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/delete",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -126,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,6 +155,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/entries",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -160,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,6 +193,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/forEach",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -194,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,6 +231,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/has",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -228,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,6 +269,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/keys",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -262,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,6 +307,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/size",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -296,7 +331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -309,6 +345,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomStateSet/values",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -330,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,6 +383,9 @@
         "__compat": {
           "description": "[Symbol.iterator]",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -364,7 +407,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMError.json b/api/DOMError.json
index 8500cb5c6896ea..1e025dd3769428 100644
--- a/api/DOMError.json
+++ b/api/DOMError.json
@@ -43,7 +43,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMException.json b/api/DOMException.json
index b90737ecc07eb7..fb161bd7917ee1 100644
--- a/api/DOMException.json
+++ b/api/DOMException.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMImplementation.json b/api/DOMImplementation.json
index f4296935884b43..99aebaad7a4740 100644
--- a/api/DOMImplementation.json
+++ b/api/DOMImplementation.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMMatrix.json b/api/DOMMatrix.json
index c5451ade53579b..b2be8814c35d6d 100644
--- a/api/DOMMatrix.json
+++ b/api/DOMMatrix.json
@@ -119,7 +119,8 @@
             }
           ],
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -247,7 +248,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -280,7 +282,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -348,7 +352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -382,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,7 +422,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -450,7 +457,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -484,7 +492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -552,7 +562,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -586,7 +597,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -619,7 +631,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -653,7 +666,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -687,7 +701,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -721,7 +736,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -755,7 +771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -789,7 +806,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -823,7 +841,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -857,7 +876,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -891,7 +911,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -925,7 +946,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -959,7 +981,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -993,7 +1016,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1027,7 +1051,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1061,7 +1086,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1095,7 +1121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1129,7 +1156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1163,7 +1191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1196,7 +1225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1229,7 +1259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1262,7 +1293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1295,7 +1327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1328,7 +1361,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1366,7 +1400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1405,7 +1440,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1438,7 +1474,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1471,7 +1508,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1504,7 +1542,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1537,7 +1576,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMMatrixReadOnly.json b/api/DOMMatrixReadOnly.json
index 30ca7a22f4540e..248939d1303265 100644
--- a/api/DOMMatrixReadOnly.json
+++ b/api/DOMMatrixReadOnly.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -331,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +410,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -433,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -467,7 +480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,7 +515,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -534,7 +549,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -567,7 +583,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -601,7 +618,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -635,7 +653,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -669,7 +688,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -703,7 +723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -737,7 +758,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -771,7 +793,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -805,7 +828,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -839,7 +863,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -873,7 +898,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -907,7 +933,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -941,7 +968,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -975,7 +1003,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1009,7 +1038,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1043,7 +1073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1077,7 +1108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1111,7 +1143,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1145,7 +1178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1179,7 +1213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1213,7 +1248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1247,7 +1283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1286,7 +1323,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1324,7 +1362,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1358,7 +1397,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1396,7 +1436,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1434,7 +1475,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1468,7 +1510,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1502,7 +1545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1536,7 +1580,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1569,7 +1614,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1603,7 +1649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1638,7 +1685,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMParser.json b/api/DOMParser.json
index 0217ec090f39ff..4b8ad798b1dfaa 100644
--- a/api/DOMParser.json
+++ b/api/DOMParser.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -149,7 +152,8 @@
               "samsunginternet_android": {
                 "version_added": "3.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -188,7 +192,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -227,7 +232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/api/DOMPoint.json b/api/DOMPoint.json
index df50b8b333c426..c80e82c07dd87e 100644
--- a/api/DOMPoint.json
+++ b/api/DOMPoint.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMPointReadOnly.json b/api/DOMPointReadOnly.json
index 5338dc137a28fc..34de387064496b 100644
--- a/api/DOMPointReadOnly.json
+++ b/api/DOMPointReadOnly.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +201,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -298,7 +306,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +341,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMQuad.json b/api/DOMQuad.json
index c0e1b9714bb627..4b799f6ecfdece 100644
--- a/api/DOMQuad.json
+++ b/api/DOMQuad.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +274,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -304,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -341,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +385,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMRect.json b/api/DOMRect.json
index e9e0e10d86cf45..6538bd2386d4a9 100644
--- a/api/DOMRect.json
+++ b/api/DOMRect.json
@@ -83,7 +83,8 @@
               "version_added": "2",
               "version_removed": "61"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -117,7 +118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +152,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +188,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,7 +230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +272,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,7 +306,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -333,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMRectList.json b/api/DOMRectList.json
index f110b564d5d095..e51f2bee23afb1 100644
--- a/api/DOMRectList.json
+++ b/api/DOMRectList.json
@@ -91,7 +91,8 @@
               "version_added": "≤37",
               "version_removed": "61"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -133,7 +134,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMRectReadOnly.json b/api/DOMRectReadOnly.json
index 15f811adcd7790..1331335d084aeb 100644
--- a/api/DOMRectReadOnly.json
+++ b/api/DOMRectReadOnly.json
@@ -88,7 +88,8 @@
               "version_added": "2",
               "version_removed": "61"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -122,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,7 +200,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -232,7 +236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -274,7 +279,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -316,7 +322,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -358,7 +365,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -391,7 +399,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -433,7 +442,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -475,7 +485,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -509,7 +520,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -543,7 +555,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMStringList.json b/api/DOMStringList.json
index 0b9d94a4515c25..3bcf92afecd4f6 100644
--- a/api/DOMStringList.json
+++ b/api/DOMStringList.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DOMStringMap.json b/api/DOMStringMap.json
index 9072610869b8fc..48f396cb80a19c 100644
--- a/api/DOMStringMap.json
+++ b/api/DOMStringMap.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/DOMTokenList.json b/api/DOMTokenList.json
index 5ba5551a8c9a55..d0bb1799d49579 100644
--- a/api/DOMTokenList.json
+++ b/api/DOMTokenList.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -151,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +269,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -298,7 +305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -340,7 +348,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -382,7 +391,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,7 +426,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -453,7 +464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -489,7 +501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -523,7 +536,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -560,7 +574,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -602,7 +617,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -636,7 +652,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -676,7 +693,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -712,7 +730,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -749,7 +768,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -784,7 +804,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -819,7 +840,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DataCue.json b/api/DataCue.json
index c3feb3feb57038..6b8f8f19cfae92 100644
--- a/api/DataCue.json
+++ b/api/DataCue.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DataTransfer.json b/api/DataTransfer.json
index e619b04da3dcc3..1f8e8a3394bdf0 100644
--- a/api/DataTransfer.json
+++ b/api/DataTransfer.json
@@ -34,7 +34,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": {
               "version_added": "8.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -149,7 +152,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +195,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +281,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -317,7 +324,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,7 +369,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -393,7 +402,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -425,7 +435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -457,7 +468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -501,7 +513,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -543,7 +556,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -590,7 +604,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DataTransferItem.json b/api/DataTransferItem.json
index 8ae42d0b46f890..9b5c1d7a928c2d 100644
--- a/api/DataTransferItem.json
+++ b/api/DataTransferItem.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,6 +89,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DataTransferItem/getAsFileSystemHandle",
           "spec_url": "https://wicg.github.io/file-system-access/#dom-datatransferitem-getasfilesystemhandle",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -110,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -152,7 +158,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +201,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +244,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -274,7 +283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DataTransferItemList.json b/api/DataTransferItemList.json
index 971e365fd834df..31799bdbb8e0c7 100644
--- a/api/DataTransferItemList.json
+++ b/api/DataTransferItemList.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DecompressionStream.json b/api/DecompressionStream.json
index c8894394077cc7..e828630d4c9a32 100644
--- a/api/DecompressionStream.json
+++ b/api/DecompressionStream.json
@@ -44,7 +44,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -87,7 +88,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DedicatedWorkerGlobalScope.json b/api/DedicatedWorkerGlobalScope.json
index d682f6d2b7d1cf..619511ce9fd055 100644
--- a/api/DedicatedWorkerGlobalScope.json
+++ b/api/DedicatedWorkerGlobalScope.json
@@ -36,7 +36,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "67"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +121,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -219,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +263,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -333,7 +339,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +379,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "67"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -410,7 +418,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DelayNode.json b/api/DelayNode.json
index dbdaac1a727517..b626ebb9f52583 100644
--- a/api/DelayNode.json
+++ b/api/DelayNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/DelayNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#DelayNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "24"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>DelayNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DelayNode/DelayNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-delaynode-constructor-delaynode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DelayNode/delayTime",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-delaynode-delaytime",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DeprecationReportBody.json b/api/DeprecationReportBody.json
index 805e6a49c93aff..b2bba0988a04d2 100644
--- a/api/DeprecationReportBody.json
+++ b/api/DeprecationReportBody.json
@@ -11,7 +11,16 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false
+            "version_added": "65",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "dom.reporting.enabled",
+                "value_to_set": "true"
+              }
+            ],
+            "partial_implementation": true,
+            "notes": "Not supported in workers"
           },
           "firefox_android": "mirror",
           "ie": {
@@ -25,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -44,7 +54,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -58,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -78,7 +96,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -92,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -112,7 +138,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -126,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +180,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -160,7 +201,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -180,7 +222,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -194,7 +243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -214,7 +264,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -228,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -262,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DeviceMotionEvent.json b/api/DeviceMotionEvent.json
index 8f33abae18edf4..12b7df0cd76dd9 100644
--- a/api/DeviceMotionEvent.json
+++ b/api/DeviceMotionEvent.json
@@ -32,7 +32,8 @@
             "version_added": "4.2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +195,8 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,7 +232,8 @@
               "version_added": "14.5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -268,7 +274,8 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DeviceMotionEventAcceleration.json b/api/DeviceMotionEventAcceleration.json
index f5ccf209c4102b..d76ffe5763da3d 100644
--- a/api/DeviceMotionEventAcceleration.json
+++ b/api/DeviceMotionEventAcceleration.json
@@ -29,7 +29,10 @@
             "version_added": "4.2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -66,7 +69,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -104,7 +110,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -142,7 +151,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/DeviceMotionEventRotationRate.json b/api/DeviceMotionEventRotationRate.json
index 0d51023fe9392c..db1a0b0e99d5ee 100644
--- a/api/DeviceMotionEventRotationRate.json
+++ b/api/DeviceMotionEventRotationRate.json
@@ -29,7 +29,10 @@
             "version_added": "4.2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -66,7 +69,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -104,7 +110,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -142,7 +151,10 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/DeviceOrientationEvent.json b/api/DeviceOrientationEvent.json
index c1b19cd4cc1389..4b93a85ff6efcf 100644
--- a/api/DeviceOrientationEvent.json
+++ b/api/DeviceOrientationEvent.json
@@ -44,7 +44,8 @@
           "webview_android": {
             "version_added": "3",
             "notes": "Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the <code>deviceorientationabsolute</code> event."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +208,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -247,7 +252,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +289,8 @@
               "version_added": "14.5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DevicePosture.json b/api/DevicePosture.json
index 11156c831d426a..70d30bda80da83 100644
--- a/api/DevicePosture.json
+++ b/api/DevicePosture.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": {
             "version_added": "16.2"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
             "samsunginternet_android": {
               "version_added": "16.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -105,7 +107,8 @@
             "samsunginternet_android": {
               "version_added": "16.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Directory.json b/api/Directory.json
index a405dd8c13fea4..8f38100345a4da 100644
--- a/api/Directory.json
+++ b/api/Directory.json
@@ -23,7 +23,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -54,7 +55,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -86,7 +88,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -118,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -150,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DirectoryEntrySync.json b/api/DirectoryEntrySync.json
index 5f46a0eeae4398..092bbb13f889b4 100644
--- a/api/DirectoryEntrySync.json
+++ b/api/DirectoryEntrySync.json
@@ -32,7 +32,8 @@
           "webview_android": {
             "prefix": "webkit",
             "version_added": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/DirectoryReaderSync.json b/api/DirectoryReaderSync.json
index e85d0ba190ec1f..96dd2830190cc2 100644
--- a/api/DirectoryReaderSync.json
+++ b/api/DirectoryReaderSync.json
@@ -32,7 +32,8 @@
           "webview_android": {
             "prefix": "webkit",
             "version_added": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/Document.json b/api/Document.json
index bbb5fe5051e2d0..658f42c34e1b06 100644
--- a/api/Document.json
+++ b/api/Document.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +285,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -313,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -385,7 +393,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,7 +486,8 @@
                 "partial_implementation": true,
                 "notes": "Only supported for <a href='https://developer.mozilla.org/docs/Web/API/HTMLDocument'><code>HTMLDocument</code></a>, not all <code>Document</code> objects."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -517,7 +527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -553,7 +564,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -593,7 +605,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -627,7 +640,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -699,7 +713,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -747,7 +762,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -780,7 +796,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -851,7 +868,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -864,6 +882,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Document/caretPositionFromPoint",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-document-caretpositionfrompoint",
+          "tags": [
+            "web-features:document-caretpositionfrompoint"
+          ],
           "support": {
             "chrome": {
               "version_added": "128"
@@ -885,13 +906,51 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "options_parameter": {
+          "__compat": {
+            "description": "<code>options</code> parameter",
+            "tags": [
+              "web-features:document-caretpositionfrompoint"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "128"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "131"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       },
       "caretRangeFromPoint": {
@@ -924,7 +983,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1062,7 +1122,8 @@
                 "alternative_name": "inputEncoding",
                 "version_added": "1"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1098,7 +1159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1134,7 +1196,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1198,7 +1261,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1270,7 +1334,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1310,7 +1375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1362,7 +1428,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1403,7 +1470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1450,7 +1518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1490,7 +1559,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1530,7 +1600,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1570,7 +1641,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1610,7 +1682,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1653,7 +1726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1687,7 +1761,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1731,7 +1806,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1765,7 +1841,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1809,7 +1886,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1853,7 +1931,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1895,7 +1974,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1939,7 +2019,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1979,7 +2060,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2019,7 +2101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2059,7 +2142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2105,7 +2189,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2144,7 +2229,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2186,7 +2272,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2228,7 +2315,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2265,7 +2353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2305,7 +2394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2345,7 +2435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2418,7 +2509,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2458,7 +2550,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2498,7 +2591,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2540,7 +2634,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2582,7 +2677,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2628,7 +2724,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before WebView 66, this method returned <code>null</code> when the element was a child of a host node. See <a href='https://crbug.com/759947'>bug 759947</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2679,7 +2776,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2751,7 +2849,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2784,7 +2883,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2828,7 +2928,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2872,7 +2973,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2906,7 +3008,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2941,7 +3044,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2977,7 +3081,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3010,7 +3115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3126,7 +3232,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -3161,7 +3270,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -3204,7 +3316,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3258,7 +3371,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3298,7 +3412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3370,7 +3485,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3406,7 +3522,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3440,7 +3557,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3480,7 +3598,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3500,7 +3619,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "131"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -3515,10 +3634,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -3549,7 +3669,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3635,7 +3756,10 @@
                 "alternative_name": "webkitIsFullScreen",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -3751,7 +3875,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -3858,7 +3985,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3955,7 +4083,10 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -4071,7 +4202,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -4115,7 +4249,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4155,7 +4290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4195,7 +4331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4235,7 +4372,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4277,7 +4415,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4317,7 +4456,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4357,7 +4497,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4399,7 +4540,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4437,7 +4579,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4470,7 +4613,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4503,7 +4647,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4544,7 +4689,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4580,7 +4726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4624,7 +4771,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4686,7 +4834,8 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4726,7 +4875,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4766,7 +4916,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4806,7 +4957,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4842,7 +4994,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4882,7 +5035,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4915,7 +5069,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4987,7 +5142,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5027,7 +5183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5067,7 +5224,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5100,7 +5258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5172,7 +5331,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5218,7 +5378,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5260,7 +5421,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5302,7 +5464,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5384,7 +5547,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5443,7 +5607,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5491,7 +5656,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5550,7 +5716,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5583,7 +5750,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5619,7 +5787,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5653,7 +5822,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -5691,7 +5861,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -5737,7 +5908,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5771,7 +5943,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5810,7 +5983,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5857,7 +6031,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5895,7 +6070,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5942,7 +6118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5989,7 +6166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6044,7 +6222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6087,7 +6266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6127,7 +6307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6160,7 +6341,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6231,7 +6413,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6265,7 +6448,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6309,7 +6493,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6346,7 +6531,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -6383,7 +6569,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6421,7 +6608,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6459,7 +6647,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6497,7 +6686,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6535,7 +6725,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6573,7 +6764,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6611,7 +6803,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6649,7 +6842,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6687,7 +6881,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6725,7 +6920,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6763,7 +6959,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6801,7 +6998,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6839,7 +7037,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -6878,7 +7077,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6912,7 +7112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6948,7 +7149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6990,7 +7192,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7034,7 +7237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7076,7 +7280,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7112,7 +7317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7147,7 +7353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7180,7 +7387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7222,7 +7430,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7259,7 +7468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7299,7 +7509,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7332,7 +7543,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7369,7 +7581,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7409,7 +7622,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7552,7 +7766,8 @@
                 "partial_implementation": true,
                 "notes": "The <code>onvisibilitychange</code> event handler property is not supported."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7633,7 +7848,8 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7705,7 +7921,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7738,7 +7955,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -7778,7 +7996,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7850,7 +8069,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7889,7 +8109,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7927,7 +8148,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7966,7 +8188,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DocumentFragment.json b/api/DocumentFragment.json
index 5fafc9e735dd41..f58c9a2bb124a2 100644
--- a/api/DocumentFragment.json
+++ b/api/DocumentFragment.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -177,7 +181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +292,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -321,7 +329,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +381,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -423,7 +433,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -457,7 +468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DocumentPictureInPicture.json b/api/DocumentPictureInPicture.json
index 0d398f1cb52185..c4eeca47835a27 100644
--- a/api/DocumentPictureInPicture.json
+++ b/api/DocumentPictureInPicture.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DocumentPictureInPictureEvent.json b/api/DocumentPictureInPictureEvent.json
index 1747a129fa633e..98d6cf7c7f22eb 100644
--- a/api/DocumentPictureInPictureEvent.json
+++ b/api/DocumentPictureInPictureEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/DocumentTimeline.json b/api/DocumentTimeline.json
index b23514efb394f3..abec424511bca3 100644
--- a/api/DocumentTimeline.json
+++ b/api/DocumentTimeline.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DocumentType.json b/api/DocumentType.json
index 22a7e6af537de9..1ef35820268680 100644
--- a/api/DocumentType.json
+++ b/api/DocumentType.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,7 +155,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +198,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -268,7 +274,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DragEvent.json b/api/DragEvent.json
index 2374e4fbc62817..596e597f4d4bfa 100644
--- a/api/DragEvent.json
+++ b/api/DragEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/DynamicsCompressorNode.json b/api/DynamicsCompressorNode.json
index 774346e23c5e0e..5156d01c653375 100644
--- a/api/DynamicsCompressorNode.json
+++ b/api/DynamicsCompressorNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#DynamicsCompressorNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>DynamicsCompressorNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/DynamicsCompressorNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-constructor-dynamicscompressornode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/attack",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-attack",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/knee",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-knee",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/ratio",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-ratio",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -177,7 +196,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/reduction",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-reduction",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "19",
@@ -224,7 +247,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before version 52, this was an <code>AudioParam.</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,6 +261,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/release",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-release",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -262,7 +289,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,6 +303,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/threshold",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-dynamicscompressornode-threshold",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -300,7 +331,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EXT_blend_minmax.json b/api/EXT_blend_minmax.json
index a2bcbf6a30ad1b..6f8c09e3ee3e93 100644
--- a/api/EXT_blend_minmax.json
+++ b/api/EXT_blend_minmax.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_color_buffer_float.json b/api/EXT_color_buffer_float.json
index 8906f945ab7d2e..8b3941257c9f87 100644
--- a/api/EXT_color_buffer_float.json
+++ b/api/EXT_color_buffer_float.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_color_buffer_half_float.json b/api/EXT_color_buffer_half_float.json
index 03ada2d5e44bcb..9c7134e1800d5f 100644
--- a/api/EXT_color_buffer_half_float.json
+++ b/api/EXT_color_buffer_half_float.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_disjoint_timer_query.json b/api/EXT_disjoint_timer_query.json
index 956a70cff1e06f..aa80442d486254 100644
--- a/api/EXT_disjoint_timer_query.json
+++ b/api/EXT_disjoint_timer_query.json
@@ -42,7 +42,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -92,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +197,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -347,7 +353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +405,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -449,7 +457,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EXT_disjoint_timer_query_webgl2.json b/api/EXT_disjoint_timer_query_webgl2.json
index 1a134ad3219d1c..6e549853d6bd16 100644
--- a/api/EXT_disjoint_timer_query_webgl2.json
+++ b/api/EXT_disjoint_timer_query_webgl2.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EXT_float_blend.json b/api/EXT_float_blend.json
index 9e106e840f9eac..3ae1bc78d08859 100644
--- a/api/EXT_float_blend.json
+++ b/api/EXT_float_blend.json
@@ -39,7 +39,8 @@
           },
           "webview_android": {
             "version_added": "75"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_frag_depth.json b/api/EXT_frag_depth.json
index d8ecebf20b32a9..76948147111b95 100644
--- a/api/EXT_frag_depth.json
+++ b/api/EXT_frag_depth.json
@@ -32,7 +32,8 @@
             "version_added": "15"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_sRGB.json b/api/EXT_sRGB.json
index a0b1b17dc822bf..08fa9fb8a03e66 100644
--- a/api/EXT_sRGB.json
+++ b/api/EXT_sRGB.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_shader_texture_lod.json b/api/EXT_shader_texture_lod.json
index cb516acf37b09d..7e00c395ebfa7f 100644
--- a/api/EXT_shader_texture_lod.json
+++ b/api/EXT_shader_texture_lod.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_texture_compression_bptc.json b/api/EXT_texture_compression_bptc.json
index b52c8ae86ce4cf..83f5f21862f55c 100644
--- a/api/EXT_texture_compression_bptc.json
+++ b/api/EXT_texture_compression_bptc.json
@@ -41,7 +41,8 @@
           "samsunginternet_android": {
             "version_added": false
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_texture_compression_rgtc.json b/api/EXT_texture_compression_rgtc.json
index 3295975673fff6..ffa45eaa1339e8 100644
--- a/api/EXT_texture_compression_rgtc.json
+++ b/api/EXT_texture_compression_rgtc.json
@@ -43,7 +43,8 @@
           "samsunginternet_android": {
             "version_added": false
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_texture_filter_anisotropic.json b/api/EXT_texture_filter_anisotropic.json
index 42b52ef1c0555a..e7216a4873f666 100644
--- a/api/EXT_texture_filter_anisotropic.json
+++ b/api/EXT_texture_filter_anisotropic.json
@@ -47,7 +47,8 @@
               "version_added": "4.0"
             }
           ],
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EXT_texture_norm16.json b/api/EXT_texture_norm16.json
index 50ca6ed0be1fed..68dfaf019af80d 100644
--- a/api/EXT_texture_norm16.json
+++ b/api/EXT_texture_norm16.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/EditContext.json b/api/EditContext.json
index bb4f8fa298922c..3f7c2232b4a60e 100644
--- a/api/EditContext.json
+++ b/api/EditContext.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -214,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -252,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -290,7 +297,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -327,7 +335,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -364,7 +373,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -401,7 +411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -439,7 +450,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -477,7 +489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -514,7 +527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -551,7 +565,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -588,7 +603,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -625,7 +641,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -662,7 +679,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Element.json b/api/Element.json
index 67237892d013c0..5c36dbdaea1dd6 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -179,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +292,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -319,7 +327,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -353,7 +362,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -387,7 +397,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -421,7 +432,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -455,7 +467,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -489,7 +502,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -523,7 +537,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -569,7 +584,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -640,7 +656,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -711,7 +728,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -782,7 +800,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -818,7 +837,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -851,7 +871,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -888,7 +909,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -925,7 +947,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -959,7 +982,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -993,7 +1017,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1030,7 +1055,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1067,7 +1093,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1104,7 +1131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1141,7 +1169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1175,7 +1204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1212,7 +1242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1245,7 +1276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1282,7 +1314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1315,7 +1348,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1349,7 +1383,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1382,7 +1417,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1419,7 +1455,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1452,7 +1489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1489,7 +1527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1522,7 +1561,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1559,7 +1599,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1596,7 +1637,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1632,7 +1674,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1669,7 +1712,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1706,7 +1750,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1739,7 +1784,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1776,7 +1822,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1813,7 +1860,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1850,7 +1898,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1887,7 +1936,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1924,7 +1974,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1961,7 +2012,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1994,7 +2046,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2031,7 +2084,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2068,7 +2122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2105,7 +2160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2142,7 +2198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2178,7 +2235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2215,7 +2273,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2252,7 +2311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2289,7 +2349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2326,7 +2387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2360,7 +2422,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2397,7 +2460,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2434,7 +2498,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2471,7 +2536,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2508,7 +2574,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2545,7 +2612,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2582,7 +2650,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2619,7 +2688,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2656,7 +2726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2693,7 +2764,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2730,7 +2802,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2770,7 +2843,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2805,7 +2879,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2840,7 +2915,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2881,7 +2957,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2922,7 +2999,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2956,7 +3034,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2995,7 +3074,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3030,7 +3110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3065,7 +3146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3099,7 +3181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3134,7 +3217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3185,7 +3269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3222,7 +3307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3255,7 +3341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3289,7 +3376,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3323,7 +3411,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3357,7 +3446,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3391,7 +3481,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3436,7 +3527,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3485,7 +3577,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3561,7 +3654,8 @@
                 "partial_implementation": true,
                 "notes": "Not supported for SVG elements."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3609,7 +3703,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3626,6 +3721,9 @@
             "https://w3c.github.io/uievents/#event-type-click",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onclick"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -3658,7 +3756,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3692,7 +3791,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3735,7 +3835,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3777,7 +3878,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3819,7 +3921,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3861,7 +3964,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3899,7 +4003,8 @@
               "version_added": "9"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3944,7 +4049,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3989,7 +4095,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4030,7 +4137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4065,7 +4173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4085,9 +4194,17 @@
             },
             "chrome_android": "mirror",
             "edge": "mirror",
-            "firefox": {
-              "version_added": "124"
-            },
+            "firefox": [
+              {
+                "version_added": "130"
+              },
+              {
+                "version_added": "124",
+                "version_removed": "130",
+                "partial_implementation": true,
+                "notes": "The <code>oncontentvisibilityautostatechange</code> event handler property is not supported."
+              }
+            ],
             "firefox_android": "mirror",
             "ie": {
               "version_added": false
@@ -4100,7 +4217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4144,7 +4262,8 @@
               "impl_url": "https://webkit.org/b/213953"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4178,7 +4297,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -4196,6 +4316,9 @@
             "https://w3c.github.io/clipboard-apis/#clipboard-event-copy",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncopy"
           ],
+          "tags": [
+            "web-features:clipboard-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -4226,7 +4349,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4260,7 +4384,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4277,6 +4402,9 @@
             "https://w3c.github.io/clipboard-apis/#clipboard-event-cut",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncut"
           ],
+          "tags": [
+            "web-features:clipboard-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -4307,7 +4435,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4324,6 +4453,9 @@
             "https://w3c.github.io/uievents/#event-type-dblclick",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-ondblclick"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -4356,7 +4488,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4390,7 +4523,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4434,7 +4568,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4486,7 +4621,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4535,7 +4671,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4584,7 +4721,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4699,7 +4837,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -4814,7 +4955,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -4850,7 +4994,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4886,7 +5031,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4922,7 +5068,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4956,7 +5103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4996,7 +5144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5032,7 +5181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5072,7 +5222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5112,7 +5263,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5153,7 +5305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5198,7 +5351,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5238,7 +5392,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -5280,7 +5435,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5333,7 +5489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5377,7 +5534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5415,7 +5573,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5467,7 +5626,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5505,7 +5665,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5540,7 +5701,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5582,7 +5744,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5622,7 +5785,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5662,7 +5826,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5703,7 +5868,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5739,7 +5905,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5787,7 +5954,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5829,7 +5997,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5886,7 +6055,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5938,7 +6108,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5995,7 +6166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6049,7 +6221,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6093,7 +6266,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6144,7 +6318,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "Chrome does not fire the <code>keypress</code> event for <a href='https://crbug.com/13891#c50'>known keyboard shortcuts</a>. Which keyboard shortcuts are known depends on the user's system. Use the <code>keydown</code> event to implement keyboard shortcuts."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6188,7 +6363,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6232,7 +6408,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6272,7 +6449,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6314,7 +6492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6435,7 +6614,8 @@
                 "alternative_name": "webkitMatchesSelector",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6452,6 +6632,9 @@
             "https://w3c.github.io/uievents/#event-type-mousedown",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmousedown"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -6481,7 +6664,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6498,6 +6682,9 @@
             "https://w3c.github.io/uievents/#event-type-mouseenter",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmouseenter"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -6523,7 +6710,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6540,6 +6728,9 @@
             "https://w3c.github.io/uievents/#event-type-mouseleave",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmouseleave"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -6565,7 +6756,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6582,6 +6774,9 @@
             "https://w3c.github.io/uievents/#event-type-mousemove",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmousemove"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -6611,7 +6806,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6628,6 +6824,9 @@
             "https://w3c.github.io/uievents/#event-type-mouseout",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmouseout"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -6657,7 +6856,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6674,6 +6874,9 @@
             "https://w3c.github.io/uievents/#event-type-mouseover",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmouseover"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -6703,7 +6906,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6720,6 +6924,9 @@
             "https://w3c.github.io/uievents/#event-type-mouseup",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onmouseup"
           ],
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -6749,7 +6956,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6791,7 +6999,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6831,7 +7040,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6875,7 +7085,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6917,7 +7128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6951,7 +7163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6968,6 +7181,9 @@
             "https://w3c.github.io/clipboard-apis/#clipboard-event-paste",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onpaste"
           ],
+          "tags": [
+            "web-features:clipboard-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -7003,7 +7219,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7058,7 +7275,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7113,7 +7331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7168,7 +7387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7223,7 +7443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7278,7 +7499,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7333,7 +7555,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7388,7 +7611,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7426,7 +7650,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -7481,7 +7706,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7521,7 +7747,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7557,7 +7784,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7601,7 +7829,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7648,7 +7877,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7695,7 +7925,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7739,7 +7970,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7775,7 +8007,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7816,7 +8049,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7856,7 +8090,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7896,7 +8131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7930,7 +8166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7968,7 +8205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8093,7 +8331,10 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -8128,7 +8369,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8164,7 +8406,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -8200,7 +8443,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -8268,7 +8514,8 @@
                 "version_removed": "3.0"
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8301,7 +8548,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -8338,7 +8586,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8372,7 +8621,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8404,7 +8654,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8437,7 +8688,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8470,7 +8722,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8515,7 +8768,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8549,7 +8803,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8581,7 +8836,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8614,7 +8870,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8647,7 +8904,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8690,7 +8948,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8739,7 +8998,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8814,7 +9074,8 @@
               ]
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8854,7 +9115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8890,7 +9152,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8945,7 +9208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8978,7 +9242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9012,7 +9277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9044,7 +9310,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -9077,7 +9344,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -9110,7 +9378,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -9151,7 +9420,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9184,7 +9454,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9225,7 +9496,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9265,7 +9537,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9306,7 +9579,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9346,7 +9620,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9388,7 +9663,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9428,7 +9704,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9465,7 +9742,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9502,7 +9780,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9548,7 +9827,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9585,7 +9865,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9622,7 +9903,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9662,7 +9944,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9698,7 +9981,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9744,7 +10028,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9790,7 +10075,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9836,7 +10122,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9882,7 +10169,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9936,7 +10224,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10025,7 +10314,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10071,7 +10361,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10117,7 +10408,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10153,7 +10445,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10189,7 +10482,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10225,7 +10519,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10261,7 +10556,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -10304,7 +10600,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ElementInternals.json b/api/ElementInternals.json
index 3f1b5a85693b7f..52d43ed05c47c9 100644
--- a/api/ElementInternals.json
+++ b/api/ElementInternals.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,7 +305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -331,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +410,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -432,7 +444,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -466,7 +479,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -499,7 +513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -533,7 +548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -566,7 +582,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -600,7 +617,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -633,7 +651,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -667,7 +686,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -700,7 +720,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -734,7 +755,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -768,7 +790,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -801,7 +824,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -835,7 +859,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -869,7 +894,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -902,7 +928,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -936,7 +963,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -970,7 +998,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1004,7 +1033,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1038,7 +1068,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1072,7 +1103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1106,7 +1138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1139,7 +1172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1173,7 +1207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1207,7 +1242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1241,7 +1277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1275,7 +1312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1308,7 +1346,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1342,7 +1381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1376,7 +1416,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1410,7 +1451,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1444,7 +1486,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1478,7 +1521,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1512,7 +1556,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1546,7 +1591,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1580,7 +1626,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1614,7 +1661,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1648,7 +1696,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1682,7 +1731,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1716,7 +1766,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1750,7 +1801,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1787,7 +1839,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1824,7 +1877,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1861,7 +1915,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1898,7 +1953,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1932,7 +1988,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1969,7 +2026,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2006,7 +2064,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2040,7 +2099,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2053,6 +2113,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ElementInternals/states",
           "spec_url": "https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": {
               "version_added": "90"
@@ -2074,7 +2137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2111,7 +2175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2148,7 +2213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2185,7 +2251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EncodedAudioChunk.json b/api/EncodedAudioChunk.json
index c4831222f19e8e..36e6a086439487 100644
--- a/api/EncodedAudioChunk.json
+++ b/api/EncodedAudioChunk.json
@@ -14,9 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
+            "version_added": "130"
+          },
+          "firefox_android": {
             "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -28,10 +30,11 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
@@ -51,9 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -65,10 +70,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -88,9 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -102,10 +110,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -125,9 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -139,10 +150,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -162,9 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -176,10 +190,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -199,9 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -213,10 +230,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -236,9 +254,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
+              "version_added": "130"
+            },
+            "firefox_android": {
               "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -250,10 +270,11 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/EncodedVideoChunk.json b/api/EncodedVideoChunk.json
index cecbf8e7e2a151..9251a64ad207ad 100644
--- a/api/EncodedVideoChunk.json
+++ b/api/EncodedVideoChunk.json
@@ -14,11 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": "preview",
-            "partial_implementation": true,
-            "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -53,11 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,11 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,11 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,11 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -209,11 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,11 +254,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EntrySync.json b/api/EntrySync.json
index d06eae16c89cd7..a318d0171938dc 100644
--- a/api/EntrySync.json
+++ b/api/EntrySync.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "prefix": "webkit",
             "version_added": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/ErrorEvent.json b/api/ErrorEvent.json
index 74fb480c5987b9..49110513df1b65 100644
--- a/api/ErrorEvent.json
+++ b/api/ErrorEvent.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -232,7 +237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -274,7 +280,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Event.json b/api/Event.json
index fdfe55e13f17c1..bed8dec2ee4179 100644
--- a/api/Event.json
+++ b/api/Event.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -93,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +144,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +193,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -251,7 +255,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per <a href='https://github.com/whatwg/dom/issues/211'>spec discussion</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -347,7 +353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -401,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -451,7 +459,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,7 +506,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -536,7 +546,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -592,7 +603,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -646,7 +658,8 @@
             "webview_android": {
               "version_added": "46",
               "notes": "Starting with version 53, untrusted events do not invoke the default action."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -685,7 +698,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -731,7 +745,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -781,7 +796,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -829,7 +845,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -879,7 +896,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -926,7 +944,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -972,7 +991,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1027,7 +1047,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "Starting with version 49, this property returns <a href='https://developer.mozilla.org/docs/Web/API/DOMHighResTimeStamp'><code>DOMHighResTimeStamp</code></a> instead of <a href='https://developer.mozilla.org/docs/Web/API/DOMTimeStamp'><code>DOMTimeStamp</code></a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1073,7 +1094,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EventCounts.json b/api/EventCounts.json
index e8de9b57366874..080fffa9ddaf92 100644
--- a/api/EventCounts.json
+++ b/api/EventCounts.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,7 +57,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,7 +156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EventSource.json b/api/EventSource.json
index e5c68ac1491b8e..1327a206e359e6 100644
--- a/api/EventSource.json
+++ b/api/EventSource.json
@@ -36,7 +36,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +126,8 @@
               "samsunginternet_android": {
                 "version_added": "2.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,7 +172,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,7 +218,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +268,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -312,7 +318,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,7 +368,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,7 +414,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -449,7 +458,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -492,7 +502,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EventTarget.json b/api/EventTarget.json
index 9a089d30db4e52..adcd78a8da5d47 100644
--- a/api/EventTarget.json
+++ b/api/EventTarget.json
@@ -43,7 +43,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -91,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -149,7 +151,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "Before Chrome 49, the <code>type</code> and <code>listener</code> parameters were optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +192,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +234,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -272,7 +277,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -314,7 +320,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -347,7 +354,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -365,7 +373,7 @@
                 },
                 "chrome_android": "mirror",
                 "deno": {
-                  "version_added": null
+                  "version_added": false
                 },
                 "edge": "mirror",
                 "firefox": {
@@ -386,7 +394,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -426,7 +435,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -472,7 +482,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -531,7 +542,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -585,7 +597,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -625,7 +638,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -670,7 +684,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/api/ExtendableCookieChangeEvent.json b/api/ExtendableCookieChangeEvent.json
index 0cf80d72737b9c..fe57539908f0be 100644
--- a/api/ExtendableCookieChangeEvent.json
+++ b/api/ExtendableCookieChangeEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/ExtendableEvent.json b/api/ExtendableEvent.json
index 0ecd90c3aea335..29fba783011145 100644
--- a/api/ExtendableEvent.json
+++ b/api/ExtendableEvent.json
@@ -31,7 +31,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -71,7 +74,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -111,7 +117,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -145,7 +154,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
diff --git a/api/ExtendableMessageEvent.json b/api/ExtendableMessageEvent.json
index 24c5c81c63c88d..1014e6041653b2 100644
--- a/api/ExtendableMessageEvent.json
+++ b/api/ExtendableMessageEvent.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -63,7 +66,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -99,7 +105,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -135,7 +144,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -171,7 +183,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -207,7 +222,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -243,7 +261,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/External.json b/api/External.json
index d086fb8fcfaf56..9c3f1291ee4e65 100644
--- a/api/External.json
+++ b/api/External.json
@@ -28,7 +28,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/EyeDropper.json b/api/EyeDropper.json
index a2327ab8ff5ae6..f70dc8c95a7c01 100644
--- a/api/EyeDropper.json
+++ b/api/EyeDropper.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/FeaturePolicy.json b/api/FeaturePolicy.json
index f4a66cee8ee6db..6b9ea47394ad11 100644
--- a/api/FeaturePolicy.json
+++ b/api/FeaturePolicy.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -191,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/FederatedCredential.json b/api/FederatedCredential.json
index f2f4592a10b42d..9db5928347abcc 100644
--- a/api/FederatedCredential.json
+++ b/api/FederatedCredential.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/FederatedCredential",
         "spec_url": "https://w3c.github.io/webappsec-credential-management/#federated",
+        "tags": [
+          "web-features:federated-credentials"
+        ],
         "support": {
           "chrome": {
             "version_added": "51"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,6 +42,9 @@
           "description": "<code>FederatedCredential()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FederatedCredential/FederatedCredential",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-federatedcredential-federatedcredential",
+          "tags": [
+            "web-features:federated-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -70,6 +78,9 @@
       },
       "iconURL": {
         "__compat": {
+          "tags": [
+            "web-features:federated-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -93,7 +104,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,6 +116,9 @@
       },
       "name": {
         "__compat": {
+          "tags": [
+            "web-features:federated-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -127,7 +142,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -140,6 +156,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FederatedCredential/protocol",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-federatedcredential-protocol",
+          "tags": [
+            "web-features:federated-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -161,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -174,6 +194,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FederatedCredential/provider",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-federatedcredential-provider",
+          "tags": [
+            "web-features:federated-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -195,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Fence.json b/api/Fence.json
index 77a517bf5c287e..10f56d7cede5cd 100644
--- a/api/Fence.json
+++ b/api/Fence.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -159,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/FencedFrameConfig.json b/api/FencedFrameConfig.json
index 96387855666926..6a1f45a0f238c2 100644
--- a/api/FencedFrameConfig.json
+++ b/api/FencedFrameConfig.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/FetchEvent.json b/api/FetchEvent.json
index 9b99cf290e5467..ab1adaee63dbfc 100644
--- a/api/FetchEvent.json
+++ b/api/FetchEvent.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -63,7 +66,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -99,7 +105,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -133,7 +142,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -178,7 +190,8 @@
             },
             "webview_android": {
               "version_added": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,7 +227,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -251,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +304,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -323,7 +343,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -355,7 +378,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -388,7 +412,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -425,7 +450,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/File.json b/api/File.json
index 0de6bc5e55c54e..b7e34a565dcd91 100644
--- a/api/File.json
+++ b/api/File.json
@@ -43,7 +43,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +176,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +222,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,7 +266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileEntrySync.json b/api/FileEntrySync.json
index 523c14eab38845..a306226559cca3 100644
--- a/api/FileEntrySync.json
+++ b/api/FileEntrySync.json
@@ -32,7 +32,8 @@
           "webview_android": {
             "prefix": "webkit",
             "version_added": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/FileList.json b/api/FileList.json
index e67bcb3abe23cc..c39a7f4e5acd1d 100644
--- a/api/FileList.json
+++ b/api/FileList.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -83,7 +84,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileReader.json b/api/FileReader.json
index f60d95980bd38e..ce0e92fe19b40b 100644
--- a/api/FileReader.json
+++ b/api/FileReader.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -86,7 +87,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +132,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -177,7 +180,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +232,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +291,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -337,7 +343,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -388,7 +395,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -439,7 +447,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -506,7 +515,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -557,7 +567,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -604,7 +615,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -651,7 +663,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -699,7 +712,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -746,7 +760,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -793,7 +808,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -840,7 +856,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileReaderSync.json b/api/FileReaderSync.json
index 51c32bfcf4f92b..73facf26de3e20 100644
--- a/api/FileReaderSync.json
+++ b/api/FileReaderSync.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,7 +249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystem.json b/api/FileSystem.json
index 3beb9872b994ab..66a16ebf4d0a13 100644
--- a/api/FileSystem.json
+++ b/api/FileSystem.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemDirectoryEntry.json b/api/FileSystemDirectoryEntry.json
index 3f3121e8256cfc..6b2b27f5e29001 100644
--- a/api/FileSystemDirectoryEntry.json
+++ b/api/FileSystemDirectoryEntry.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemDirectoryHandle.json b/api/FileSystemDirectoryHandle.json
index af44fe27c2dffd..86f36696663ed6 100644
--- a/api/FileSystemDirectoryHandle.json
+++ b/api/FileSystemDirectoryHandle.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +189,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +269,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,7 +309,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -338,7 +346,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemDirectoryReader.json b/api/FileSystemDirectoryReader.json
index 19c9bf2ffde54d..31db18d774ecae 100644
--- a/api/FileSystemDirectoryReader.json
+++ b/api/FileSystemDirectoryReader.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemEntry.json b/api/FileSystemEntry.json
index 848ca651b1cc0b..15b29c5f26b533 100644
--- a/api/FileSystemEntry.json
+++ b/api/FileSystemEntry.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +221,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +260,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +299,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +337,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,7 +376,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -404,7 +414,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,7 +452,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemFileEntry.json b/api/FileSystemFileEntry.json
index cb9b466cff44d9..09cc797ba0943e 100644
--- a/api/FileSystemFileEntry.json
+++ b/api/FileSystemFileEntry.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemFileHandle.json b/api/FileSystemFileHandle.json
index 6e683a787322e0..f9ba1fca8ce2b3 100644
--- a/api/FileSystemFileHandle.json
+++ b/api/FileSystemFileHandle.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,13 +67,48 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "mode": {
+          "__compat": {
+            "description": "<code>mode</code> option",
+            "support": {
+              "chrome": {
+                "version_added": "121"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": false,
+              "deprecated": false
+            }
+          }
         }
       },
       "createWritable": {
@@ -103,13 +139,50 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "mode": {
+          "__compat": {
+            "description": "<code>mode</code> option",
+            "support": {
+              "chrome": {
+                "version_added": "121"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": {
+                "version_added": false
+              },
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": false,
+              "deprecated": false
+            }
+          }
         }
       },
       "getFile": {
@@ -142,7 +215,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemHandle.json b/api/FileSystemHandle.json
index 29c0d4b89c6477..d8bff4e4e6622c 100644
--- a/api/FileSystemHandle.json
+++ b/api/FileSystemHandle.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,6 +196,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FileSystemHandle/queryPermission",
           "spec_url": "https://wicg.github.io/file-system-access/#api-filesystemhandle-querypermission",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -214,7 +222,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +258,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -262,6 +272,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FileSystemHandle/requestPermission",
           "spec_url": "https://wicg.github.io/file-system-access/#api-filesystemhandle-requestpermission",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -285,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/FileSystemSync.json b/api/FileSystemSync.json
index bc600673fa16f1..408107585f4b37 100644
--- a/api/FileSystemSync.json
+++ b/api/FileSystemSync.json
@@ -26,7 +26,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemSyncAccessHandle.json b/api/FileSystemSyncAccessHandle.json
index 65df81c640c49d..9b15a0a7ae5635 100644
--- a/api/FileSystemSyncAccessHandle.json
+++ b/api/FileSystemSyncAccessHandle.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -290,7 +297,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -363,7 +372,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -403,7 +413,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FileSystemWritableFileStream.json b/api/FileSystemWritableFileStream.json
index 013ec4a4084e98..0bf57a3efc3582 100644
--- a/api/FileSystemWritableFileStream.json
+++ b/api/FileSystemWritableFileStream.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +140,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FocusEvent.json b/api/FocusEvent.json
index 8c3713a2a40a01..5bd6a1f01f480d 100644
--- a/api/FocusEvent.json
+++ b/api/FocusEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FontData.json b/api/FontData.json
index c0842ef7a830be..22bf4dff6ddbdd 100644
--- a/api/FontData.json
+++ b/api/FontData.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -180,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -218,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/FontFace.json b/api/FontFace.json
index ea7453af0cb3f9..8de5952b1c89b7 100644
--- a/api/FontFace.json
+++ b/api/FontFace.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": {
             "version_added": "4.0"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +240,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +277,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -304,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -340,7 +349,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -376,7 +386,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -412,7 +423,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -448,7 +460,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -484,7 +497,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -520,7 +534,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -556,7 +571,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -590,7 +606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -626,7 +643,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FontFaceSet.json b/api/FontFaceSet.json
index 4b7cb8f3bf983b..357a2e9d71453e 100644
--- a/api/FontFaceSet.json
+++ b/api/FontFaceSet.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -269,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +344,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -368,7 +378,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -402,7 +413,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +449,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -472,7 +485,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +521,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -541,7 +556,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,7 +590,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -608,7 +625,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -641,7 +659,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -675,7 +694,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FontFaceSetLoadEvent.json b/api/FontFaceSetLoadEvent.json
index 751ed62ed15c72..e4ef43467fd3ea 100644
--- a/api/FontFaceSetLoadEvent.json
+++ b/api/FontFaceSetLoadEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +96,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FormData.json b/api/FormData.json
index fd6954d68c1603..4dd0b43888eae8 100644
--- a/api/FormData.json
+++ b/api/FormData.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/FormData",
         "spec_url": "https://xhr.spec.whatwg.org/#interface-formdata",
+        "tags": [
+          "web-features:xhr"
+        ],
         "support": {
           "chrome": {
             "version_added": "5"
@@ -43,7 +46,8 @@
           "webview_android": {
             "version_added": "3",
             "notes": "XHR in Android 4.0 sends empty content for <code>FormData</code> with <code>blob</code>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,6 +60,9 @@
           "description": "<code>FormData()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FormData/FormData",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-formdata",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -93,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,6 +188,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/FormData/append",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-formdata-append",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -218,7 +231,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "XHR in Android 4.0 sends empty content for <code>FormData</code> with <code>blob</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,6 +243,9 @@
         "filename_parameter": {
           "__compat": {
             "description": "<code>filename</code> parameter",
+            "tags": [
+              "web-features:xhr"
+            ],
             "support": {
               "chrome": {
                 "version_added": "16"
@@ -259,7 +276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -302,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,7 +362,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -383,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -425,7 +446,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -467,7 +489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -509,7 +532,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -550,7 +574,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -592,7 +617,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -633,7 +659,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -674,7 +701,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FormDataEvent.json b/api/FormDataEvent.json
index cc6245c69354fa..041a2efe0df576 100644
--- a/api/FormDataEvent.json
+++ b/api/FormDataEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/FragmentDirective.json b/api/FragmentDirective.json
index 0640a48f19478d..e3c99919392625 100644
--- a/api/FragmentDirective.json
+++ b/api/FragmentDirective.json
@@ -13,7 +13,7 @@
             "version_added": "83"
           },
           "firefox": {
-            "version_added": false
+            "version_added": "131"
           },
           "firefox_android": "mirror",
           "ie": {
@@ -28,10 +28,11 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
diff --git a/api/GPU.json b/api/GPU.json
index 232961d957c6ee..7c1a999f7ebf31 100644
--- a/api/GPU.json
+++ b/api/GPU.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -96,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -155,7 +157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -190,7 +193,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -234,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUAdapter.json b/api/GPUAdapter.json
index 005da9ccb3da23..ab8de1afac8e2f 100644
--- a/api/GPUAdapter.json
+++ b/api/GPUAdapter.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -191,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -250,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -305,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -349,7 +355,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -398,7 +405,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/GPUAdapterInfo.json b/api/GPUAdapterInfo.json
index 9eba1628ff4ab4..eed33a30d7921b 100644
--- a/api/GPUAdapterInfo.json
+++ b/api/GPUAdapterInfo.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -96,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -149,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -202,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -255,7 +259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUBindGroup.json b/api/GPUBindGroup.json
index f6f8938d30807a..fe7f8c70d41580 100644
--- a/api/GPUBindGroup.json
+++ b/api/GPUBindGroup.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUBindGroupLayout.json b/api/GPUBindGroupLayout.json
index a5c96915535d36..2d7df1c7e48edd 100644
--- a/api/GPUBindGroupLayout.json
+++ b/api/GPUBindGroupLayout.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUBuffer.json b/api/GPUBuffer.json
index 8c9f1e8918f4fc..af99366a3a273e 100644
--- a/api/GPUBuffer.json
+++ b/api/GPUBuffer.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -226,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -285,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -344,7 +349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -403,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -462,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -521,7 +529,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUCanvasContext.json b/api/GPUCanvasContext.json
index 31c6e016cefe64..a920d56a67f731 100644
--- a/api/GPUCanvasContext.json
+++ b/api/GPUCanvasContext.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -181,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -228,7 +232,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUCommandBuffer.json b/api/GPUCommandBuffer.json
index ee59f38ad7b956..f423d9f4f51322 100644
--- a/api/GPUCommandBuffer.json
+++ b/api/GPUCommandBuffer.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUCommandEncoder.json b/api/GPUCommandEncoder.json
index bfa8f89ef9665a..cf7c84bff644c2 100644
--- a/api/GPUCommandEncoder.json
+++ b/api/GPUCommandEncoder.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -226,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -285,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -344,7 +349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -403,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -462,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -521,7 +529,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -580,7 +589,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -639,7 +649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -698,7 +709,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -757,7 +769,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -816,7 +829,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -871,7 +885,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GPUCompilationInfo.json b/api/GPUCompilationInfo.json
index c3f588b98ab90a..c9dc15d1e0d55d 100644
--- a/api/GPUCompilationInfo.json
+++ b/api/GPUCompilationInfo.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUCompilationMessage.json b/api/GPUCompilationMessage.json
index df0e330395bd50..78005f6afff33f 100644
--- a/api/GPUCompilationMessage.json
+++ b/api/GPUCompilationMessage.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -131,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -178,7 +181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -225,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -272,7 +277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -319,7 +325,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUComputePassEncoder.json b/api/GPUComputePassEncoder.json
index a856ac11e85d56..cde9aba7834f62 100644
--- a/api/GPUComputePassEncoder.json
+++ b/api/GPUComputePassEncoder.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -172,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -231,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -290,7 +294,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -349,7 +354,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -408,7 +414,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -467,7 +474,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -526,7 +534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -585,7 +594,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -639,7 +649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUComputePipeline.json b/api/GPUComputePipeline.json
index 48e5cf9e83ffd4..24fbc832222a9d 100644
--- a/api/GPUComputePipeline.json
+++ b/api/GPUComputePipeline.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUDevice.json b/api/GPUDevice.json
index f26d72b33c2fd0..9d5320696a2690 100644
--- a/api/GPUDevice.json
+++ b/api/GPUDevice.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -226,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -285,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -344,7 +349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -403,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -462,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -517,7 +525,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -576,7 +585,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -635,7 +645,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -694,7 +705,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -753,7 +765,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -812,7 +825,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -871,7 +885,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -930,7 +945,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -989,7 +1005,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1036,7 +1053,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1073,7 +1091,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1133,7 +1152,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1192,7 +1212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1251,7 +1272,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1310,7 +1332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1369,7 +1392,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1428,7 +1452,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1476,7 +1501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUDeviceLostInfo.json b/api/GPUDeviceLostInfo.json
index ee6a15d653f04a..2e3540de22d810 100644
--- a/api/GPUDeviceLostInfo.json
+++ b/api/GPUDeviceLostInfo.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUError.json b/api/GPUError.json
index 7180517744c931..9eec225c2aba41 100644
--- a/api/GPUError.json
+++ b/api/GPUError.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -100,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUExternalTexture.json b/api/GPUExternalTexture.json
index 3a478eb3316001..dd7b6e53222484 100644
--- a/api/GPUExternalTexture.json
+++ b/api/GPUExternalTexture.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -76,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUInternalError.json b/api/GPUInternalError.json
index 85209e14999f99..f51910bf133a1d 100644
--- a/api/GPUInternalError.json
+++ b/api/GPUInternalError.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -77,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUOutOfMemoryError.json b/api/GPUOutOfMemoryError.json
index d3fba7583bc98d..84f6fcefc33be1 100644
--- a/api/GPUOutOfMemoryError.json
+++ b/api/GPUOutOfMemoryError.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -109,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUPipelineError.json b/api/GPUPipelineError.json
index bf73e1ca65a593..5e8a8f977170e8 100644
--- a/api/GPUPipelineError.json
+++ b/api/GPUPipelineError.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -77,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -114,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -158,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUPipelineLayout.json b/api/GPUPipelineLayout.json
index b0732bea7cc366..58679e7ca88735 100644
--- a/api/GPUPipelineLayout.json
+++ b/api/GPUPipelineLayout.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUQuerySet.json b/api/GPUQuerySet.json
index 76b12e12a6560c..2dcef492d063bf 100644
--- a/api/GPUQuerySet.json
+++ b/api/GPUQuerySet.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -226,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -285,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUQueue.json b/api/GPUQueue.json
index cb061682f6b7be..f297874f6d6571 100644
--- a/api/GPUQueue.json
+++ b/api/GPUQueue.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -157,7 +159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -217,7 +220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -272,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -331,7 +336,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -390,7 +396,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -449,7 +456,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPURenderBundle.json b/api/GPURenderBundle.json
index 05145042864f27..93e08dee9530d8 100644
--- a/api/GPURenderBundle.json
+++ b/api/GPURenderBundle.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -100,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPURenderBundleEncoder.json b/api/GPURenderBundleEncoder.json
index db136b1e297e22..497ec75362f64f 100644
--- a/api/GPURenderBundleEncoder.json
+++ b/api/GPURenderBundleEncoder.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -219,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -283,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -342,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -401,7 +407,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -456,7 +463,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -515,7 +523,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -574,7 +583,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -633,7 +643,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -692,7 +703,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -751,7 +763,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -810,7 +823,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -860,7 +874,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/GPURenderPassEncoder.json b/api/GPURenderPassEncoder.json
index 8050ef029cf28d..2e7d2a625f6a84 100644
--- a/api/GPURenderPassEncoder.json
+++ b/api/GPURenderPassEncoder.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -104,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -163,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -222,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -286,7 +290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -350,7 +355,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -409,7 +415,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -464,7 +471,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -523,7 +531,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -582,7 +591,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -641,7 +651,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -700,7 +711,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -759,7 +771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -818,7 +831,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -877,7 +891,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -936,7 +951,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -995,7 +1011,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1054,7 +1071,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1113,7 +1131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1172,7 +1191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1222,7 +1242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1282,7 +1303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1332,7 +1354,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPURenderPipeline.json b/api/GPURenderPipeline.json
index c27495259d226b..dbc557cf72f4d9 100644
--- a/api/GPURenderPipeline.json
+++ b/api/GPURenderPipeline.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUSampler.json b/api/GPUSampler.json
index 536c48380e5827..2fd4b5c87d40c4 100644
--- a/api/GPUSampler.json
+++ b/api/GPUSampler.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUShaderModule.json b/api/GPUShaderModule.json
index 8346003783ac0a..96633e20bbf0b6 100644
--- a/api/GPUShaderModule.json
+++ b/api/GPUShaderModule.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -96,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -155,7 +157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUSupportedFeatures.json b/api/GPUSupportedFeatures.json
index d44a969cecfbe2..e7a7b5cf432bf5 100644
--- a/api/GPUSupportedFeatures.json
+++ b/api/GPUSupportedFeatures.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -102,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -155,7 +157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -261,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -314,7 +319,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -367,7 +373,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -421,7 +428,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUSupportedLimits.json b/api/GPUSupportedLimits.json
index 9c71644e78b291..dad24bfd02824f 100644
--- a/api/GPUSupportedLimits.json
+++ b/api/GPUSupportedLimits.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -150,7 +152,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -209,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -264,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -307,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -350,7 +356,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -405,7 +412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -460,7 +468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -515,7 +524,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -570,7 +580,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -625,7 +636,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -680,7 +692,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -735,7 +748,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -790,7 +804,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -845,7 +860,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -888,7 +904,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -943,7 +960,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -998,7 +1016,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1053,7 +1072,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1108,7 +1128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1163,7 +1184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1218,7 +1240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1273,7 +1296,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1328,7 +1352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1383,7 +1408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1438,7 +1464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1493,7 +1520,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1548,7 +1576,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1603,7 +1632,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1658,7 +1688,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1713,7 +1744,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1768,7 +1800,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUTexture.json b/api/GPUTexture.json
index 0a26acb1fd1bc4..2a53eaae72bddb 100644
--- a/api/GPUTexture.json
+++ b/api/GPUTexture.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -226,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -285,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -344,7 +349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -403,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -462,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -521,7 +529,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -580,7 +589,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -639,7 +649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -698,7 +709,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUTextureView.json b/api/GPUTextureView.json
index a2bee766626087..9ae41d03e2e718 100644
--- a/api/GPUTextureView.json
+++ b/api/GPUTextureView.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -108,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUUncapturedErrorEvent.json b/api/GPUUncapturedErrorEvent.json
index 7f93167c3f904e..11051c4fa4a428 100644
--- a/api/GPUUncapturedErrorEvent.json
+++ b/api/GPUUncapturedErrorEvent.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -85,7 +86,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GPUValidationError.json b/api/GPUValidationError.json
index 50242ce1867fbc..38bdd6102ecb92 100644
--- a/api/GPUValidationError.json
+++ b/api/GPUValidationError.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -109,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/GainNode.json b/api/GainNode.json
index 38ba9f512dff43..b20e2a419209fe 100644
--- a/api/GainNode.json
+++ b/api/GainNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/GainNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#GainNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "24"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>GainNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GainNode/GainNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-gainnode-constructor-gainnode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GainNode/gain",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-gainnode-gain",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Gamepad.json b/api/Gamepad.json
index 68169f8df68d54..51b1904bbd28ad 100644
--- a/api/Gamepad.json
+++ b/api/Gamepad.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +292,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -323,7 +330,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -361,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +447,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -474,7 +485,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -512,7 +524,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -550,7 +563,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GamepadButton.json b/api/GamepadButton.json
index 441338b839cad3..d4ffe471578dc3 100644
--- a/api/GamepadButton.json
+++ b/api/GamepadButton.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GamepadEvent.json b/api/GamepadEvent.json
index 1f3dacd98a0434..83426e6eb8d75e 100644
--- a/api/GamepadEvent.json
+++ b/api/GamepadEvent.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GamepadHapticActuator.json b/api/GamepadHapticActuator.json
index ad78431f6b07b1..456d1300a06b13 100644
--- a/api/GamepadHapticActuator.json
+++ b/api/GamepadHapticActuator.json
@@ -29,7 +29,8 @@
             "version_added": false
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -169,7 +173,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -208,7 +213,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -275,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -309,7 +317,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -347,7 +356,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -385,7 +395,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -422,7 +433,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GamepadPose.json b/api/GamepadPose.json
index 25ff9041bc61f8..d4882e2f384673 100644
--- a/api/GamepadPose.json
+++ b/api/GamepadPose.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -97,7 +99,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -245,7 +251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -282,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -319,7 +327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -356,7 +365,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Geolocation.json b/api/Geolocation.json
index ec6204b60e1fa9..be37be710557e8 100644
--- a/api/Geolocation.json
+++ b/api/Geolocation.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Geolocation",
         "spec_url": "https://w3c.github.io/geolocation/#geolocation_interface",
+        "tags": [
+          "web-features:geolocation"
+        ],
         "support": {
           "chrome": {
             "version_added": "5"
@@ -38,7 +41,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -49,6 +53,9 @@
       "secure_context_required": {
         "__compat": {
           "description": "Secure context required",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -73,7 +80,8 @@
             "webview_android": {
               "version_added": "51",
               "notes": "Secure context is only required for applications targeting Android Nougat (7) and higher. See <a href='https://crbug.com/603574'>bug 603574</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,6 +94,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Geolocation/clearWatch",
           "spec_url": "https://w3c.github.io/geolocation/#clearwatch-method",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -117,7 +128,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,6 +142,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Geolocation/getCurrentPosition",
           "spec_url": "https://w3c.github.io/geolocation/#getcurrentposition-method",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -161,7 +176,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,6 +190,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Geolocation/watchPosition",
           "spec_url": "https://w3c.github.io/geolocation/#watchposition-method",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -205,7 +224,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GeolocationCoordinates.json b/api/GeolocationCoordinates.json
index b6337655bdde27..1265c7deb585e5 100644
--- a/api/GeolocationCoordinates.json
+++ b/api/GeolocationCoordinates.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates",
         "spec_url": "https://w3c.github.io/geolocation/#coordinates_interface",
+        "tags": [
+          "web-features:geolocation"
+        ],
         "support": {
           "chrome": [
             {
@@ -94,7 +97,8 @@
               "version_added": "≤37",
               "version_removed": "78"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -105,6 +109,9 @@
       "secure_context_required": {
         "__compat": {
           "description": "Secure context required",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -128,7 +135,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,6 +149,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/accuracy",
           "spec_url": "https://w3c.github.io/geolocation/#latitude-longitude-and-accuracy-attributes",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -184,7 +195,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,6 +209,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/altitude",
           "spec_url": "https://w3c.github.io/geolocation/#altitude-and-altitudeaccuracy-attributes",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -240,7 +255,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,6 +269,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/altitudeAccuracy",
           "spec_url": "https://w3c.github.io/geolocation/#altitude-and-altitudeaccuracy-attributes",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -296,7 +315,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -309,6 +329,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/heading",
           "spec_url": "https://w3c.github.io/geolocation/#heading-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -352,7 +375,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,6 +389,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/latitude",
           "spec_url": "https://w3c.github.io/geolocation/#latitude-longitude-and-accuracy-attributes",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -408,7 +435,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,6 +449,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/longitude",
           "spec_url": "https://w3c.github.io/geolocation/#latitude-longitude-and-accuracy-attributes",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -464,7 +495,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,6 +509,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/speed",
           "spec_url": "https://w3c.github.io/geolocation/#speed-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -520,7 +555,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -533,6 +569,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/toJSON",
           "spec_url": "https://w3c.github.io/geolocation/#tojson-method-0",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "126"
@@ -554,7 +593,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GeolocationPosition.json b/api/GeolocationPosition.json
index ff78adf20e4c76..7d5e97ed89c3d8 100644
--- a/api/GeolocationPosition.json
+++ b/api/GeolocationPosition.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPosition",
         "spec_url": "https://w3c.github.io/geolocation/#position_interface",
+        "tags": [
+          "web-features:geolocation"
+        ],
         "support": {
           "chrome": [
             {
@@ -80,7 +83,8 @@
               "version_added": "≤37",
               "version_removed": "78"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -91,6 +95,9 @@
       "secure_context_required": {
         "__compat": {
           "description": "Secure context required",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -114,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,6 +135,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPosition/coords",
           "spec_url": "https://w3c.github.io/geolocation/#coords-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -158,7 +169,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +183,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPosition/timestamp",
           "spec_url": "https://w3c.github.io/geolocation/#timestamp-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -202,7 +217,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,6 +231,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPosition/toJSON",
           "spec_url": "https://w3c.github.io/geolocation/#tojson-method",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "126"
@@ -236,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GeolocationPositionError.json b/api/GeolocationPositionError.json
index 2dac9d3a3ac038..9801626cf43bd5 100644
--- a/api/GeolocationPositionError.json
+++ b/api/GeolocationPositionError.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPositionError",
         "spec_url": "https://w3c.github.io/geolocation/#position_error_interface",
+        "tags": [
+          "web-features:geolocation"
+        ],
         "support": {
           "chrome": [
             {
@@ -55,7 +58,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,6 +70,9 @@
       "secure_context_required": {
         "__compat": {
           "description": "Secure context required",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -89,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,6 +110,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPositionError/code",
           "spec_url": "https://w3c.github.io/geolocation/#code-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -131,7 +142,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,6 +156,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GeolocationPositionError/message",
           "spec_url": "https://w3c.github.io/geolocation/#message-attribute",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -173,7 +188,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GestureEvent.json b/api/GestureEvent.json
index 3f8d348ab31f54..bc24e929001172 100644
--- a/api/GestureEvent.json
+++ b/api/GestureEvent.json
@@ -26,7 +26,8 @@
             "version_added": "2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +93,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +128,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +196,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -223,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -257,7 +264,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +299,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,7 +334,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -359,7 +369,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -391,7 +402,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -423,7 +435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/GravitySensor.json b/api/GravitySensor.json
index 329c5cb63f8651..f9b4d40f59798d 100644
--- a/api/GravitySensor.json
+++ b/api/GravitySensor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/GravitySensor",
         "spec_url": "https://w3c.github.io/accelerometer/#gravitysensor-interface",
+        "tags": [
+          "web-features:gravity-sensor"
+        ],
         "support": {
           "chrome": {
             "version_added": "91"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>GravitySensor()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GravitySensor/GravitySensor",
           "spec_url": "https://w3c.github.io/accelerometer/#dom-gravitysensor-gravitysensor",
+          "tags": [
+            "web-features:gravity-sensor"
+          ],
           "support": {
             "chrome": {
               "version_added": "91"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Gyroscope.json b/api/Gyroscope.json
index 821602a7ef5f56..30ba03de2e186d 100644
--- a/api/Gyroscope.json
+++ b/api/Gyroscope.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Gyroscope",
         "spec_url": "https://w3c.github.io/gyroscope/#gyroscope-interface",
+        "tags": [
+          "web-features:gyroscope"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>Gyroscope()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Gyroscope/Gyroscope",
           "spec_url": "https://w3c.github.io/gyroscope/#dom-gyroscope-gyroscope",
+          "tags": [
+            "web-features:gyroscope"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Gyroscope/x",
           "spec_url": "https://w3c.github.io/gyroscope/#gyroscope-x",
+          "tags": [
+            "web-features:gyroscope"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,6 +118,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Gyroscope/y",
           "spec_url": "https://w3c.github.io/gyroscope/#gyroscope-y",
+          "tags": [
+            "web-features:gyroscope"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -127,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,6 +156,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Gyroscope/z",
           "spec_url": "https://w3c.github.io/gyroscope/#gyroscope-z",
+          "tags": [
+            "web-features:gyroscope"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -161,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HID.json b/api/HID.json
index 0d7264a1df78e2..3b707452fa4e59 100644
--- a/api/HID.json
+++ b/api/HID.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -148,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -187,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/HIDConnectionEvent.json b/api/HIDConnectionEvent.json
index 8cf7567cf0a39e..c0989e1cbb445a 100644
--- a/api/HIDConnectionEvent.json
+++ b/api/HIDConnectionEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/HIDDevice.json b/api/HIDDevice.json
index f8925eee2587d0..22011aa9610d29 100644
--- a/api/HIDDevice.json
+++ b/api/HIDDevice.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -183,7 +187,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -222,7 +227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -261,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -300,7 +307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -339,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -378,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -417,7 +427,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -456,7 +467,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -495,7 +507,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/HIDInputReportEvent.json b/api/HIDInputReportEvent.json
index fbd948dd7a5f09..03cc85a9eba45a 100644
--- a/api/HIDInputReportEvent.json
+++ b/api/HIDInputReportEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/HMDVRDevice.json b/api/HMDVRDevice.json
index 6424ad656830b9..51fcc2c32b9644 100644
--- a/api/HMDVRDevice.json
+++ b/api/HMDVRDevice.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLAllCollection.json b/api/HTMLAllCollection.json
index 9b49637afd9dd4..4bf5decc83a995 100644
--- a/api/HTMLAllCollection.json
+++ b/api/HTMLAllCollection.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLAnchorElement.json b/api/HTMLAnchorElement.json
index 6326ed8c90a681..2ba132ceed4507 100644
--- a/api/HTMLAnchorElement.json
+++ b/api/HTMLAnchorElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmlanchorelement",
+        "tags": [
+          "web-features:a"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +76,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +228,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,6 +242,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/hash",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-hash-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -257,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,6 +283,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/host",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-host-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -294,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -307,6 +324,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/hostname",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-hostname-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -330,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,6 +364,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/href",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-href-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -370,7 +394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -383,6 +408,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/hreflang",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-hreflang",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -410,7 +438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -449,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -462,6 +492,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/origin",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-origin-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "8"
@@ -488,7 +521,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,6 +535,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/password",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-password-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -522,7 +559,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -535,6 +573,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/pathname",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-pathname-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -559,7 +600,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -599,7 +641,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -612,6 +655,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/port",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-port-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -635,7 +681,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -648,6 +695,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/protocol",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-protocol-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -671,7 +721,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -684,6 +735,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": [
               {
@@ -712,7 +766,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -745,7 +800,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -779,7 +835,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -813,7 +870,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -827,6 +885,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/rel",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-rel",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -854,7 +915,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -867,6 +929,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/relList",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-rellist",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "65"
@@ -890,7 +955,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -929,7 +995,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -942,6 +1009,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/search",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-search-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -966,7 +1036,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1005,7 +1076,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1018,6 +1090,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/target",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-target",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1045,7 +1120,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1058,6 +1134,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/text",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-text",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1085,7 +1164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1098,6 +1178,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/toString",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-href-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -1123,7 +1206,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1136,6 +1220,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-a-type",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1163,7 +1250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1176,6 +1264,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAnchorElement/username",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-username-dev",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -1197,7 +1288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLAreaElement.json b/api/HTMLAreaElement.json
index 4addddf0b6b601..0d6ce6fd7dddc6 100644
--- a/api/HTMLAreaElement.json
+++ b/api/HTMLAreaElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#htmlareaelement",
+        "tags": [
+          "web-features:image-maps"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
       "alt": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-alt",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -69,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -81,6 +89,9 @@
       "coords": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-coords",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -108,7 +119,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,6 +169,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/hash",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-hash-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -180,7 +196,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/host",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-host-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -217,7 +237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,6 +251,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/hostname",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-hostname-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -253,7 +277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,6 +291,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/href",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-href-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -293,7 +321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +361,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -345,6 +375,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/origin",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-origin-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -371,7 +404,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,6 +418,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/password",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-password-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -405,7 +442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -418,6 +456,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/pathname",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-pathname-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -442,7 +483,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -482,7 +524,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -495,6 +538,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/port",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-port-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -518,7 +564,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -531,6 +578,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/protocol",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-protocol-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -554,7 +604,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -567,6 +618,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": [
               {
@@ -595,7 +649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -628,7 +683,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -662,7 +718,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -696,7 +753,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -710,6 +768,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/rel",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-rel",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "54"
@@ -733,7 +794,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -746,6 +808,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/relList",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-rellist",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "65"
@@ -773,7 +838,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -786,6 +852,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/search",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-search-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -810,7 +879,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -822,6 +892,9 @@
       "shape": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-shape",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -849,7 +922,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -862,6 +936,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/target",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-area-target",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -889,7 +966,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -902,6 +980,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/toString",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-href-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -925,7 +1006,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -938,6 +1020,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAreaElement/username",
           "spec_url": "https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-username-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "32"
@@ -959,7 +1044,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLAudioElement.json b/api/HTMLAudioElement.json
index 71d7bd3c738f1f..cf8bef11cc3510 100644
--- a/api/HTMLAudioElement.json
+++ b/api/HTMLAudioElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAudioElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#htmlaudioelement",
+        "tags": [
+          "web-features:audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "3"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
           "description": "<code>Audio()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLAudioElement/Audio",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-audio-dev",
+          "tags": [
+            "web-features:audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -79,7 +86,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLBRElement.json b/api/HTMLBRElement.json
index b78a5a2fc022d0..8e8d705bcd3545 100644
--- a/api/HTMLBRElement.json
+++ b/api/HTMLBRElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLBRElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmlbrelement",
+        "tags": [
+          "web-features:br"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLBaseElement.json b/api/HTMLBaseElement.json
index c117194d9c5c28..1bcf962699eede 100644
--- a/api/HTMLBaseElement.json
+++ b/api/HTMLBaseElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLBaseElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmlbaseelement",
+        "tags": [
+          "web-features:base"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLBaseElement/href",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-base-href",
+          "tags": [
+            "web-features:base"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -74,7 +81,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -156,6 +166,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLBaseElement/target",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-base-target",
+          "tags": [
+            "web-features:base"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -185,7 +198,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLBodyElement.json b/api/HTMLBodyElement.json
index 49d60b68554234..0bf0f25cb92f77 100644
--- a/api/HTMLBodyElement.json
+++ b/api/HTMLBodyElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLBodyElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#htmlbodyelement",
+        "tags": [
+          "web-features:body"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +119,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +161,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +203,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +245,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +287,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLButtonElement.json b/api/HTMLButtonElement.json
index 2ae8640509c173..f7e0a07442616a 100644
--- a/api/HTMLButtonElement.json
+++ b/api/HTMLButtonElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmlbuttonelement",
+        "tags": [
+          "web-features:button"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,7 @@
       },
       "checkValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/checkValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-checkvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -80,7 +85,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -89,10 +95,121 @@
           }
         }
       },
+      "command": {
+        "__compat": {
+          "support": {
+            "chrome": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "enable-experimental-web-platform-features",
+                  "value_to_set": "enabled"
+                }
+              ]
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.element.invokers.enabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "InvokerAttributesEnabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "commandfor": {
+        "__compat": {
+          "support": {
+            "chrome": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "enable-experimental-web-platform-features",
+                  "value_to_set": "enabled"
+                }
+              ]
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.element.invokers.enabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "InvokerAttributesEnabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "disabled": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/disabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-disabled",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -122,7 +239,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +251,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -163,7 +285,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,6 +298,9 @@
       "formAction": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formaction",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -205,7 +331,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,6 +344,9 @@
       "formEnctype": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formenctype",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -246,7 +376,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,6 +389,9 @@
       "formMethod": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formmethod",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -287,7 +421,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,6 +434,9 @@
       "formNoValidate": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formnovalidate",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -330,7 +468,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,6 +481,9 @@
       "formTarget": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formtarget",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -371,116 +513,11 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "invokeaction": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "enable-experimental-web-platform-features",
-                  "value_to_set": "enabled"
-                }
-              ]
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.element.invokers.enabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "InvokerAttributesEnabled",
-                  "value_to_set": "true"
-                }
-              ]
             },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "invoketarget": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "enable-experimental-web-platform-features",
-                  "value_to_set": "enabled"
-                }
-              ]
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.element.invokers.enabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "InvokerAttributesEnabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
-          },
-          "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -490,6 +527,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/labels",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-lfe-labels-dev",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -519,7 +559,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -530,7 +571,11 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -560,7 +605,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -597,7 +643,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -634,7 +681,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -645,6 +693,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -674,7 +723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -721,7 +771,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -734,6 +785,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-button-type",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -763,7 +817,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -809,7 +864,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -820,6 +876,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -855,7 +912,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -866,7 +924,11 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-button-value",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -896,7 +958,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -907,6 +970,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -942,7 +1006,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLCanvasElement.json b/api/HTMLCanvasElement.json
index 870905320e5caa..762889894a7b42 100644
--- a/api/HTMLCanvasElement.json
+++ b/api/HTMLCanvasElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#htmlcanvaselement",
+        "tags": [
+          "web-features:canvas"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,6 +164,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/getContext",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvas-getcontext-dev",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -184,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,7 +261,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -342,7 +355,8 @@
                   "alternative_name": "experimental-webgl",
                   "version_added": "37"
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -354,6 +368,9 @@
             "__compat": {
               "description": "<code>options.alpha</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "32"
@@ -379,7 +396,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -392,6 +410,9 @@
             "__compat": {
               "description": "<code>options.desynchronized</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl-desynchronized"
+              ],
               "support": {
                 "chrome": [
                   {
@@ -427,7 +448,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -440,6 +462,9 @@
             "__compat": {
               "description": "<code>options.failIfMajorPerformanceCaveat</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "33"
@@ -465,7 +490,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -478,6 +504,9 @@
             "__compat": {
               "description": "<code>options.powerPreference</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "75"
@@ -503,7 +532,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -543,7 +573,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -555,6 +586,9 @@
             "__compat": {
               "description": "<code>options.alpha</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl2"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "56"
@@ -576,7 +610,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -589,6 +624,9 @@
             "__compat": {
               "description": "<code>options.desynchronized</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl2-desynchronized"
+              ],
               "support": {
                 "chrome": [
                   {
@@ -624,7 +662,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -637,6 +676,9 @@
             "__compat": {
               "description": "<code>options.failIfMajorPerformanceCaveat</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl2"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "56"
@@ -658,7 +700,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -671,6 +714,9 @@
             "__compat": {
               "description": "<code>options.powerPreference</code> parameter",
               "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#WEBGLCONTEXTATTRIBUTES",
+              "tags": [
+                "web-features:webgl2"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "75"
@@ -696,7 +742,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -741,7 +788,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -780,7 +828,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -792,6 +841,9 @@
             "__compat": {
               "description": "<code>options.alpha</code> parameter",
               "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasrenderingcontext2dsettings-alpha",
+              "tags": [
+                "web-features:canvas-2d-alpha"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "32"
@@ -815,7 +867,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -828,6 +881,9 @@
             "__compat": {
               "description": "<code>options.colorSpace</code> parameter",
               "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasrenderingcontext2dsettings-colorspace",
+              "tags": [
+                "web-features:canvas-2d-color-managment"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "92"
@@ -849,7 +905,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -862,6 +919,9 @@
             "__compat": {
               "description": "<code>options.desynchronized</code> parameter",
               "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasrenderingcontext2dsettings-desynchronized",
+              "tags": [
+                "web-features:canvas-2d-desynchronized"
+              ],
               "support": {
                 "chrome": [
                   {
@@ -897,7 +957,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -910,6 +971,9 @@
             "__compat": {
               "description": "<code>options.willReadFrequently</code> parameter",
               "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasrenderingcontext2dsettings-willreadfrequently",
+              "tags": [
+                "web-features:canvas-2d-willreadfrequently"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "99"
@@ -931,7 +995,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -946,6 +1011,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvas-height",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -975,7 +1043,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1008,7 +1077,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1040,7 +1110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1053,6 +1124,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/toBlob",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvas-toblob-dev",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -1084,7 +1158,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1116,7 +1191,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1149,7 +1225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1182,7 +1259,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1215,7 +1293,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1229,6 +1308,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/toDataURL",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvas-todataurl-dev",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -1260,7 +1342,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1292,7 +1375,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1325,7 +1409,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1362,7 +1447,8 @@
               },
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1400,7 +1486,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1414,6 +1501,9 @@
           "description": "<code>webglcontextcreationerror</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/webglcontextcreationerror_event",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.4",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1445,7 +1535,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1459,6 +1550,9 @@
           "description": "<code>webglcontextlost</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/webglcontextlost_event",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.2",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1490,7 +1584,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1504,6 +1599,9 @@
           "description": "<code>webglcontextrestored</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1535,7 +1633,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1548,6 +1647,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-canvas-height",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1577,7 +1679,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLCollection.json b/api/HTMLCollection.json
index 802864a1bde1f8..3d475a87c36abc 100644
--- a/api/HTMLCollection.json
+++ b/api/HTMLCollection.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDListElement.json b/api/HTMLDListElement.json
index d5463573af3d90..465caedd081508 100644
--- a/api/HTMLDListElement.json
+++ b/api/HTMLDListElement.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDataElement.json b/api/HTMLDataElement.json
index f2433dbf6993a2..661ee6e56f23f4 100644
--- a/api/HTMLDataElement.json
+++ b/api/HTMLDataElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLDataElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmldataelement",
+        "tags": [
+          "web-features:data"
+        ],
         "support": {
           "chrome": {
             "version_added": "62"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLDataElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-data-value",
+          "tags": [
+            "web-features:data"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDataListElement.json b/api/HTMLDataListElement.json
index 66087cac124810..8c378a80a46f2c 100644
--- a/api/HTMLDataListElement.json
+++ b/api/HTMLDataListElement.json
@@ -36,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -46,6 +47,7 @@
       },
       "options": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLDataListElement/options",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-datalist-options-dev",
           "tags": [
             "web-features:datalist"
@@ -79,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDetailsElement.json b/api/HTMLDetailsElement.json
index ee0f8486cd2002..d373c403c22d45 100644
--- a/api/HTMLDetailsElement.json
+++ b/api/HTMLDetailsElement.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +41,8 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLDetailsElement/open",
+          "spec_url": "https://html.spec.whatwg.org/multipage/interactive-elements.html#dom-details-name",
           "tags": [
             "web-features:details-name"
           ],
@@ -50,7 +53,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "130"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -64,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +107,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDialogElement.json b/api/HTMLDialogElement.json
index 90a2a84e84bdca..6ba5104815bddc 100644
--- a/api/HTMLDialogElement.json
+++ b/api/HTMLDialogElement.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDirectoryElement.json b/api/HTMLDirectoryElement.json
index 42ef2be150df20..d17b637d1bd6d6 100644
--- a/api/HTMLDirectoryElement.json
+++ b/api/HTMLDirectoryElement.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDivElement.json b/api/HTMLDivElement.json
index 7c1138af3d1e7d..22174312162738 100644
--- a/api/HTMLDivElement.json
+++ b/api/HTMLDivElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLDivElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmldivelement",
+        "tags": [
+          "web-features:div"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLDocument.json b/api/HTMLDocument.json
index 222d4ae59c4ad8..4f857195aace1d 100644
--- a/api/HTMLDocument.json
+++ b/api/HTMLDocument.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/HTMLElement.json b/api/HTMLElement.json
index bedb78aa6e9ea1..73bc0fc6bed6a1 100644
--- a/api/HTMLElement.json
+++ b/api/HTMLElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "1"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +278,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +382,8 @@
                 "partial_implementation": true,
                 "notes": "Supported for <code>HTMLButtonElement</code>, <code>HTMLInputElement</code>, <code>HTMLSelectElement</code>, and <code>HTMLTextAreaElement</code>."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -413,7 +421,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -455,7 +464,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -499,7 +509,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -556,7 +567,8 @@
             "webview_android": {
               "version_added": "4.4",
               "notes": "Before Android WebView 4.4, <code>click()</code> is only defined on buttons and inputs."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -565,6 +577,61 @@
           }
         }
       },
+      "command_event": {
+        "__compat": {
+          "description": "<code>command</code> event",
+          "support": {
+            "chrome": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "enable-experimental-web-platform-features",
+                  "value_to_set": "enabled"
+                }
+              ]
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.element.invokers.enabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "InvokerAttributesEnabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "contentEditable": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLElement/contentEditable",
@@ -598,7 +665,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -632,7 +700,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -675,7 +744,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -717,7 +787,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -761,7 +832,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -805,7 +877,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -849,7 +922,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -889,7 +963,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -931,7 +1006,8 @@
               "version_added": "4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -975,7 +1051,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1019,7 +1096,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1063,7 +1141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1107,7 +1186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1144,7 +1224,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1178,7 +1259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1219,7 +1301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1261,7 +1344,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1293,7 +1377,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1336,7 +1421,8 @@
                 "version_added": "15.5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1379,7 +1465,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1416,7 +1503,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1453,7 +1541,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1495,7 +1584,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1531,7 +1621,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1540,60 +1631,6 @@
           }
         }
       },
-      "invoke_event": {
-        "__compat": {
-          "description": "<code>invoke</code> event",
-          "support": {
-            "chrome": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "enable-experimental-web-platform-features",
-                  "value_to_set": "enabled"
-                }
-              ]
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.element.invokers.enabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "InvokerAttributesEnabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "isContentEditable": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLElement/isContentEditable",
@@ -1627,7 +1664,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1669,7 +1707,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1711,7 +1750,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1753,7 +1793,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1795,7 +1836,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1837,7 +1879,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1879,7 +1922,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1921,7 +1965,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1963,7 +2008,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1998,9 +2044,14 @@
             "safari": {
               "version_added": "17"
             },
-            "safari_ios": "mirror",
+            "safari_ios": {
+              "version_added": "17",
+              "partial_implementation": true,
+              "notes": "On iOS and iPadOS, popovers are not dismissed when the user taps outside of the popover area, see <a href='https://webkit.org/b/267688'>bug 267688</a>."
+            },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2037,7 +2088,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2079,7 +2131,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2121,7 +2174,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2173,7 +2227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2215,7 +2270,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2253,7 +2309,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2290,7 +2347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2322,7 +2380,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2360,7 +2419,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2394,7 +2454,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2406,6 +2467,9 @@
       "writingSuggestions": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/interaction.html#dom-writingsuggestions",
+          "tags": [
+            "web-features:writingsuggestions"
+          ],
           "support": {
             "chrome": {
               "version_added": "124"
@@ -2413,7 +2477,8 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": false,
+              "impl_url": "https://bugzil.la/1871621"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2427,7 +2492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLEmbedElement.json b/api/HTMLEmbedElement.json
index 9c1320fc9c88d2..0f994a77a7996c 100644
--- a/api/HTMLEmbedElement.json
+++ b/api/HTMLEmbedElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLEmbedElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlembedelement",
+        "tags": [
+          "web-features:embed"
+        ],
         "support": {
           "chrome": {
             "version_added": "1",
@@ -36,7 +39,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,6 +91,9 @@
       "getSVGDocument": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-media-getsvgdocument-dev",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -115,7 +123,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,6 +137,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLEmbedElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-height",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -157,7 +169,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +211,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,6 +225,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLEmbedElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-embed-src",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -240,7 +257,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,6 +270,9 @@
       "type": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-embed-type",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -279,7 +300,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,6 +314,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLEmbedElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-width",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -321,7 +346,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFencedFrameElement.json b/api/HTMLFencedFrameElement.json
index 2aea7e0cbdd6a2..07e9951d4d961d 100644
--- a/api/HTMLFencedFrameElement.json
+++ b/api/HTMLFencedFrameElement.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/HTMLFieldSetElement.json b/api/HTMLFieldSetElement.json
index 3b4e26f57d404f..96a1e6aab45d10 100644
--- a/api/HTMLFieldSetElement.json
+++ b/api/HTMLFieldSetElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmlfieldsetelement",
+        "tags": [
+          "web-features:fieldset"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,7 @@
       },
       "checkValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/checkValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-checkvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -78,7 +83,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,6 +96,9 @@
       "disabled": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-fieldset-disabled",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -117,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,6 +139,9 @@
       "elements": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-fieldset-elements-dev",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "21"
@@ -158,7 +171,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,6 +183,9 @@
         "type_HTMLCollection": {
           "__compat": {
             "description": "Returns an <code>HTMLCollection</code>",
+            "tags": [
+              "web-features:fieldset"
+            ],
             "support": {
               "chrome": {
                 "version_added": "57"
@@ -192,7 +209,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -204,7 +222,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -234,7 +256,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +268,11 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -271,7 +298,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,6 +310,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -311,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -358,7 +388,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -369,7 +400,11 @@
       },
       "type": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-fieldset-type-dev",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -395,7 +430,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,7 +477,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -452,6 +489,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -487,7 +525,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -498,6 +537,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFieldSetElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -533,7 +573,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFontElement.json b/api/HTMLFontElement.json
index ec2330b5293f40..ca5db984df1c07 100644
--- a/api/HTMLFontElement.json
+++ b/api/HTMLFontElement.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFormControlsCollection.json b/api/HTMLFormControlsCollection.json
index d0a8e1c8c4dbc3..8dbc90c9e58853 100644
--- a/api/HTMLFormControlsCollection.json
+++ b/api/HTMLFormControlsCollection.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -82,7 +83,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFormElement.json b/api/HTMLFormElement.json
index 974433cc0b92a0..dee6d1ea6f6f22 100644
--- a/api/HTMLFormElement.json
+++ b/api/HTMLFormElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#htmlformelement",
+        "tags": [
+          "web-features:form"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/acceptCharset",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-acceptcharset",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -74,7 +81,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,6 +95,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/action",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-action",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -116,7 +127,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,6 +140,9 @@
       "autocomplete": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-autocomplete",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -151,7 +166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,6 +178,7 @@
       },
       "checkValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/checkValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-checkvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -197,7 +214,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,6 +228,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-elements-dev",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -239,7 +260,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,6 +274,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/encoding",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-encoding",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -281,7 +306,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,6 +320,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/enctype",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-enctype",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -323,7 +352,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -337,6 +367,9 @@
           "description": "<code>formdata</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/formdata_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-formdata",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "77"
@@ -358,7 +391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -371,6 +405,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/length",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-length-dev",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -400,7 +437,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -413,6 +451,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/method",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-method",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -442,7 +483,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -455,6 +497,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-name",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -484,7 +529,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -496,6 +542,9 @@
       "noValidate": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-novalidate",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -527,7 +576,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -539,6 +589,9 @@
       "rel": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-rel",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "108"
@@ -560,7 +613,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -572,6 +626,9 @@
       "relList": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-rellist",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "108"
@@ -593,7 +650,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -632,7 +690,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -646,6 +705,9 @@
           "description": "<code>requestSubmit()</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/requestSubmit",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-requestsubmit-dev",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "76"
@@ -667,7 +729,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -680,6 +743,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/reset",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-reset-dev",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -709,7 +775,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -723,6 +790,9 @@
           "description": "<code>reset</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/reset_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-reset",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -754,7 +824,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -767,6 +838,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/submit",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-submit-dev",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -796,7 +870,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -813,6 +888,9 @@
             "https://html.spec.whatwg.org/multipage/indices.html#event-submit",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onsubmit"
           ],
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -842,7 +920,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -855,6 +934,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/target",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-target",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -884,7 +966,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFrameElement.json b/api/HTMLFrameElement.json
index ef5de886d20dc7..68b9899aa55a9f 100644
--- a/api/HTMLFrameElement.json
+++ b/api/HTMLFrameElement.json
@@ -32,7 +32,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -154,7 +157,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +199,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +241,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -277,7 +283,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -318,7 +325,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -359,7 +367,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -400,7 +409,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,7 +451,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLFrameSetElement.json b/api/HTMLFrameSetElement.json
index d9ae1f5b4a4585..36f9bd00490385 100644
--- a/api/HTMLFrameSetElement.json
+++ b/api/HTMLFrameSetElement.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLHRElement.json b/api/HTMLHRElement.json
index c459a0b6b7307f..9669437bbab324 100644
--- a/api/HTMLHRElement.json
+++ b/api/HTMLHRElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLHRElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlhrelement",
+        "tags": [
+          "web-features:hr"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLHeadElement.json b/api/HTMLHeadElement.json
index 42323b02d3c972..9b5b944bb4668b 100644
--- a/api/HTMLHeadElement.json
+++ b/api/HTMLHeadElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLHeadElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmlheadelement",
+        "tags": [
+          "web-features:head"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLHeadingElement.json b/api/HTMLHeadingElement.json
index fcfe9999a6ca4f..8e4a4bc1bbdde7 100644
--- a/api/HTMLHeadingElement.json
+++ b/api/HTMLHeadingElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLHeadingElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#htmlheadingelement",
+        "tags": [
+          "web-features:headings"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLHtmlElement.json b/api/HTMLHtmlElement.json
index d170eb4a4bae68..5a4b4ae32a55e8 100644
--- a/api/HTMLHtmlElement.json
+++ b/api/HTMLHtmlElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLHtmlElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmlhtmlelement",
+        "tags": [
+          "web-features:html"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLIFrameElement.json b/api/HTMLIFrameElement.json
index b9c95762a5b3ae..48039bf1aec76b 100644
--- a/api/HTMLIFrameElement.json
+++ b/api/HTMLIFrameElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement",
+        "tags": [
+          "web-features:iframe"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +113,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,6 +127,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/allow",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-allow",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "60"
@@ -142,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +205,8 @@
               ]
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +246,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -268,7 +280,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -281,6 +294,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/contentDocument",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-contentdocument",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -310,7 +326,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,6 +340,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/contentWindow",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-contentwindow",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -352,7 +372,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,6 +386,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/credentialless",
           "spec_url": "https://wicg.github.io/anonymous-iframe/#dom-htmliframeelement-credentialless",
+          "tags": [
+            "web-features:iframe-credentialless"
+          ],
           "support": {
             "chrome": {
               "version_added": "110"
@@ -386,7 +410,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -420,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -460,7 +486,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -501,7 +528,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -513,6 +541,9 @@
       "getSVGDocument": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-media-getsvgdocument-dev",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -542,7 +573,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -555,6 +587,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-height",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -584,7 +619,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -623,7 +659,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -664,7 +701,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -705,7 +743,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -746,7 +785,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -759,6 +799,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-name",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -788,7 +831,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -821,7 +865,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -834,6 +879,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": [
               {
@@ -862,7 +910,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -895,7 +944,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -929,7 +979,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -963,7 +1014,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1007,7 +1059,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before WebView 50, this property returned the deprecated child <code>DOMSettableTokenList</code> instead of <code>DOMTokenList</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1048,7 +1101,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1081,7 +1135,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1094,6 +1149,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-src",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1123,7 +1181,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1136,6 +1195,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/srcdoc",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-iframe-srcdoc",
+          "tags": [
+            "web-features:iframe-srcdoc"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -1157,7 +1219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1170,6 +1233,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-width",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1199,7 +1265,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLImageElement.json b/api/HTMLImageElement.json
index 5a35cceeb736ab..574c4f87ba62f5 100644
--- a/api/HTMLImageElement.json
+++ b/api/HTMLImageElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#htmlimageelement",
+        "tags": [
+          "web-features:img"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
           "description": "<code>Image()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/Image",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-image-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -71,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +121,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,6 +135,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/alt",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-alt",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -155,7 +167,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -231,7 +245,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,6 +259,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/complete",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-complete-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -274,7 +292,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,6 +306,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/crossOrigin",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-crossorigin",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "13"
@@ -314,7 +336,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +373,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,6 +388,9 @@
           "description": "<code>decode()</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/decode",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -385,7 +412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,6 +426,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/decoding",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decoding",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "65"
@@ -419,7 +450,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -449,7 +481,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "127",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "network.fetchpriority.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1797715"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -463,7 +503,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -476,6 +517,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-height-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -505,7 +549,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -547,7 +592,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -560,6 +606,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/isMap",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-ismap",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -589,7 +638,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -626,7 +676,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -668,7 +719,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -707,7 +759,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -749,7 +802,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -762,6 +816,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/naturalHeight",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-naturalheight-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -791,7 +848,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -804,6 +862,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/naturalWidth",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-naturalwidth-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -833,7 +894,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -846,6 +908,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": [
               {
@@ -874,7 +939,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -907,7 +973,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -941,7 +1008,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -975,7 +1043,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1009,7 +1078,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1045,7 +1115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1081,7 +1152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1095,6 +1167,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-src",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1124,7 +1199,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1160,7 +1236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1173,6 +1250,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/useMap",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-usemap",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1202,7 +1282,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1244,7 +1325,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1257,6 +1339,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLImageElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-width-dev",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1286,7 +1371,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1334,7 +1420,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1382,7 +1469,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLInputElement.json b/api/HTMLInputElement.json
index 1b3c4c6695bff8..ed2e31ccd67b3a 100644
--- a/api/HTMLInputElement.json
+++ b/api/HTMLInputElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +44,7 @@
       },
       "accept": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/accept",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-accept",
           "support": {
             "chrome": {
@@ -71,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -149,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,6 +165,7 @@
       },
       "autocomplete": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/autocomplete",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-autocomplete",
           "support": {
             "chrome": {
@@ -188,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +232,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,6 +244,7 @@
       },
       "capture": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/capture",
           "spec_url": "https://w3c.github.io/html-media-capture/#dom-htmlinputelement-capture",
           "tags": [
             "web-features:html-media-capture"
@@ -267,7 +276,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,7 +316,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -353,7 +364,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -392,7 +404,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -403,6 +416,7 @@
       },
       "defaultValue": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/defaultValue",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-defaultvalue",
           "support": {
             "chrome": {
@@ -431,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -471,7 +486,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -511,7 +527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -557,7 +574,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -568,6 +586,7 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
           "support": {
             "chrome": {
@@ -596,7 +615,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -637,7 +657,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -678,7 +699,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -719,7 +741,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -762,7 +785,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -803,7 +827,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -842,7 +867,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -877,7 +903,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -918,7 +945,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -970,7 +998,8 @@
             },
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1012,7 +1041,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1023,6 +1053,7 @@
       },
       "list": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/list",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-list-dev",
           "support": {
             "chrome": {
@@ -1053,7 +1084,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1064,6 +1096,7 @@
       },
       "max": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/max",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-max",
           "support": {
             "chrome": {
@@ -1096,7 +1129,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1107,6 +1141,7 @@
       },
       "maxLength": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/maxLength",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-maxlength",
           "support": {
             "chrome": {
@@ -1135,7 +1170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1146,6 +1182,7 @@
       },
       "min": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/min",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-min",
           "support": {
             "chrome": {
@@ -1178,7 +1215,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1189,6 +1227,7 @@
       },
       "minLength": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/minLength",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-minlength",
           "support": {
             "chrome": {
@@ -1213,7 +1252,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1255,7 +1295,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1266,6 +1307,7 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
           "support": {
             "chrome": {
@@ -1294,7 +1336,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1305,6 +1348,7 @@
       },
       "pattern": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/pattern",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-pattern",
           "support": {
             "chrome": {
@@ -1337,7 +1381,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1348,6 +1393,7 @@
       },
       "placeholder": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/placeholder",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-placeholder",
           "support": {
             "chrome": {
@@ -1378,7 +1424,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1415,7 +1462,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1452,7 +1500,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1463,6 +1512,7 @@
       },
       "readOnly": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/readOnly",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-readonly",
           "support": {
             "chrome": {
@@ -1491,7 +1541,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1532,7 +1583,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1543,6 +1595,7 @@
       },
       "required": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/required",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-required",
           "support": {
             "chrome": {
@@ -1575,7 +1628,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1610,7 +1664,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1650,7 +1705,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1694,7 +1750,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1734,7 +1791,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1774,7 +1832,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1814,7 +1873,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1854,7 +1914,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1902,7 +1963,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1936,7 +1998,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1978,7 +2041,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2015,7 +2079,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2051,7 +2116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2089,7 +2155,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2128,7 +2195,8 @@
                 "impl_url": "https://webkit.org/b/261703"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2167,7 +2235,8 @@
                 "impl_url": "https://webkit.org/b/261703"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2206,7 +2275,8 @@
                 "impl_url": "https://webkit.org/b/261703"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2242,7 +2312,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2287,7 +2358,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2328,7 +2400,8 @@
                 "impl_url": "https://webkit.org/b/261703"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2373,7 +2446,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2413,7 +2487,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2452,7 +2527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2463,6 +2539,7 @@
       },
       "step": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/step",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-step",
           "support": {
             "chrome": {
@@ -2495,7 +2572,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2541,7 +2619,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2587,7 +2666,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2627,7 +2707,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2666,7 +2747,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2712,7 +2794,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2723,6 +2806,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -2758,7 +2842,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2769,6 +2854,7 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-value",
           "support": {
             "chrome": {
@@ -2797,7 +2883,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2808,6 +2895,7 @@
       },
       "valueAsDate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/valueAsDate",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-valueasdate-dev",
           "support": {
             "chrome": {
@@ -2846,7 +2934,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2857,6 +2946,7 @@
       },
       "valueAsNumber": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/valueAsNumber",
           "spec_url": "https://html.spec.whatwg.org/multipage/input.html#dom-input-valueasnumber-dev",
           "support": {
             "chrome": {
@@ -2889,7 +2979,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2927,7 +3018,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2965,7 +3057,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3004,7 +3097,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3015,6 +3109,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -3050,7 +3145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLLIElement.json b/api/HTMLLIElement.json
index 7328150d8b1191..758a6e6b2a0df1 100644
--- a/api/HTMLLIElement.json
+++ b/api/HTMLLIElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLIElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmllielement",
+        "tags": [
+          "web-features:list-elements"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -32,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,6 +87,9 @@
       "value": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#dom-li-value",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -109,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLLabelElement.json b/api/HTMLLabelElement.json
index 380584d3bd5499..2f6894cb5e56b9 100644
--- a/api/HTMLLabelElement.json
+++ b/api/HTMLLabelElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLabelElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#htmllabelelement",
+        "tags": [
+          "web-features:label"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -47,6 +51,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLabelElement/control",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-label-control-dev",
+          "tags": [
+            "web-features:label"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -76,7 +83,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -89,6 +97,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLabelElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-label-form-dev",
+          "tags": [
+            "web-features:label"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -118,7 +129,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,6 +143,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLabelElement/htmlFor",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-label-htmlfor",
+          "tags": [
+            "web-features:label"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -160,7 +175,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLLegendElement.json b/api/HTMLLegendElement.json
index f138f47cdb63b2..caffdcd0ef7c07 100644
--- a/api/HTMLLegendElement.json
+++ b/api/HTMLLegendElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLegendElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmllegendelement",
+        "tags": [
+          "web-features:fieldset"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -80,7 +85,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLegendElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-legend-form",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -108,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLLinkElement.json b/api/HTMLLinkElement.json
index e91fb51190e7a8..dbdb8f05283111 100644
--- a/api/HTMLLinkElement.json
+++ b/api/HTMLLinkElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmllinkelement",
+        "tags": [
+          "web-features:link"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/as",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-as",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -68,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,6 +169,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/crossOrigin",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-crossorigin",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "34"
@@ -182,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,6 +209,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/disabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-disabled",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1",
@@ -232,7 +249,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "In Chrome and other Blink-based browsers, adding the <code>disabled</code> attribute using JavaScript does not remove the stylesheet from <code>document.styleSheets</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,7 +280,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "127",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "network.fetchpriority.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1797715"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -276,7 +302,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -289,6 +316,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/href",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-href",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -316,7 +346,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,6 +360,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/hreflang",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-hreflang",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -356,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -392,7 +427,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -428,7 +464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,6 +478,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/integrity",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-integrity",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "45"
@@ -464,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,6 +518,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/media",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-media",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -504,7 +548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -517,6 +562,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": {
               "version_added": "58"
@@ -538,7 +586,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -571,7 +620,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -605,7 +655,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -639,7 +690,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -653,6 +705,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/rel",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-rel",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -680,7 +735,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -693,6 +749,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/relList",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-rellist",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -716,7 +775,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -755,7 +815,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -791,7 +852,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -803,6 +865,9 @@
       "sizes": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-sizes",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "15",
@@ -830,7 +895,8 @@
             "webview_android": {
               "version_added": "4.4",
               "notes": "Before WebView 50, this property returned the deprecated child <code>DOMSettableTokenList</code> instead of <code>DOMTokenList</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -869,7 +935,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -882,6 +949,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLLinkElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-link-type",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -909,7 +979,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMapElement.json b/api/HTMLMapElement.json
index 53b242ff132880..0d1d0a5759a3e9 100644
--- a/api/HTMLMapElement.json
+++ b/api/HTMLMapElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMapElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#htmlmapelement",
+        "tags": [
+          "web-features:image-maps"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMapElement/areas",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-map-areas-dev",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -74,7 +81,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,6 +95,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMapElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#dom-map-name",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -116,7 +127,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMarqueeElement.json b/api/HTMLMarqueeElement.json
index 2a11416cf4927a..cfe367ee8809b2 100644
--- a/api/HTMLMarqueeElement.json
+++ b/api/HTMLMarqueeElement.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,7 +307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -417,7 +427,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -456,7 +467,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -493,7 +505,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -532,7 +545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -567,7 +581,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -606,7 +621,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -645,7 +661,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMediaElement.json b/api/HTMLMediaElement.json
index ff5cfac31b2d1a..78c0ac5a8af4e1 100644
--- a/api/HTMLMediaElement.json
+++ b/api/HTMLMediaElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#htmlmediaelement",
+        "tags": [
+          "web-features:video"
+        ],
         "support": {
           "chrome": {
             "version_added": "3"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -51,6 +55,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-abort",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onabort"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -80,7 +87,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,6 +100,9 @@
       "addTextTrack": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-addtexttrack-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": [
               {
@@ -133,7 +144,8 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,6 +225,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/autoplay",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-autoplay",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -243,7 +259,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -259,6 +276,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#dom-media-buffered-dev",
             "https://w3c.github.io/media-source/#htmlmediaelement-extensions"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -290,7 +310,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -307,6 +328,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-canplay",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncanplay"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -338,7 +362,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -355,6 +380,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-canplaythrough",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncanplaythrough"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -386,7 +414,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -400,6 +429,9 @@
           "description": "<code>canPlayType()</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/canPlayType",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-navigator-canplaytype-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3",
@@ -455,7 +487,8 @@
                 "<code>codecs</code> string can contain any subset of optional parameters (should be all or none).",
                 "Errors if <code>codecs</code> string contains unexpected characters (should evaluate string up to character)."
               ]
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -490,7 +523,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -525,7 +559,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -538,6 +573,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/controls",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-controls",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -569,7 +607,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -606,7 +645,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -619,6 +659,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/crossOrigin",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-crossorigin",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "33"
@@ -649,7 +692,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -662,6 +706,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/currentSrc",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-currentsrc-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -693,7 +740,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -706,6 +754,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/currentTime",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-currenttime-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -737,7 +788,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -750,6 +802,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/defaultMuted",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-defaultmuted",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -777,7 +832,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -790,6 +846,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/defaultPlaybackRate",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-defaultplaybackrate-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -821,7 +880,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -862,7 +922,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/521319"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -875,6 +936,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/duration",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-duration-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -906,7 +970,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -923,6 +988,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-durationchange",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-ondurationchange"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -954,7 +1022,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -971,6 +1040,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-emptied",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onemptied"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1002,7 +1074,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1039,7 +1112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1052,6 +1126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/ended",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-ended-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1083,7 +1160,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1100,6 +1178,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-ended",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onended"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1131,7 +1212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1144,6 +1226,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/error",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-error-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1175,7 +1260,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1192,6 +1278,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-error",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-window-onmessageerror"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1221,7 +1310,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1259,7 +1349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1292,7 +1383,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1305,6 +1397,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/load",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-load-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1336,7 +1431,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1353,6 +1449,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-loadeddata",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onloadeddata"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1384,7 +1483,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1401,6 +1501,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-loadedmetadata",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onloadedmetadata"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1432,7 +1535,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1449,6 +1553,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-loadstart",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onloadstart"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1478,7 +1585,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1491,6 +1599,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/loop",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-loop",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1522,7 +1633,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1557,7 +1669,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1593,7 +1706,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1625,7 +1739,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1657,7 +1772,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1689,7 +1805,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1721,7 +1838,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1734,6 +1852,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/muted",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-muted-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1765,7 +1886,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1778,6 +1900,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/networkState",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-networkstate-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1812,7 +1937,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1825,6 +1951,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/pause",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-pause-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1856,7 +1985,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1873,6 +2003,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-pause",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onpause"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1904,7 +2037,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1917,6 +2051,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/paused",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-paused-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1948,7 +2085,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1961,6 +2099,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/play",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-play-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1992,7 +2133,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2003,6 +2145,9 @@
         "returns_promise": {
           "__compat": {
             "description": "Returns a <code>Promise</code>",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "50"
@@ -2026,7 +2171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2044,6 +2190,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-play",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onplay"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2075,7 +2224,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2088,6 +2238,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/playbackRate",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-playbackrate-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3",
@@ -2127,7 +2280,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2139,6 +2293,9 @@
       "played": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-played-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2170,7 +2327,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2187,6 +2345,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-playing",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onplaying"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2218,7 +2379,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2231,6 +2393,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/preload",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-preload",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -2262,7 +2427,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2306,7 +2472,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2323,6 +2490,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-progress",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onprogress"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2352,7 +2522,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2369,6 +2540,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-ratechange",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onratechange"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2400,7 +2574,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2413,6 +2588,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/readyState",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-readystate-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2444,7 +2622,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2483,7 +2662,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/521319"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2499,6 +2679,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable-dev",
             "https://w3c.github.io/media-source/#htmlmediaelement-extensions"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2530,7 +2713,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2547,6 +2731,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-seeked",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onseeked"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2578,7 +2765,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2590,6 +2778,9 @@
       "seeking": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-seeking-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2621,7 +2812,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2638,6 +2830,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-seeking",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onseeking"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2669,7 +2864,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2703,7 +2899,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2739,7 +2936,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2781,7 +2979,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2823,7 +3022,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2836,6 +3036,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-src",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2867,7 +3070,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2919,7 +3123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2936,6 +3141,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-stalled",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onstalled"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -2967,7 +3175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2984,6 +3193,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-suspend",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onsuspend"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -3015,7 +3227,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3057,7 +3270,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3074,6 +3288,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-timeupdate",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-ontimeupdate"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -3105,7 +3322,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3171,7 +3389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3184,6 +3403,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMediaElement/volume",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-media-volume-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -3217,7 +3439,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3234,6 +3457,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-volumechange",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onvolumechange"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -3265,7 +3491,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3282,6 +3509,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-waiting",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onwaiting"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -3313,7 +3543,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3347,7 +3578,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMenuElement.json b/api/HTMLMenuElement.json
index 4bcaeae7b74c8b..0e52b894bbfca2 100644
--- a/api/HTMLMenuElement.json
+++ b/api/HTMLMenuElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMenuElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlmenuelement",
+        "tags": [
+          "web-features:menu"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMetaElement.json b/api/HTMLMetaElement.json
index 440f9df04b8f9f..fe7872e8772014 100644
--- a/api/HTMLMetaElement.json
+++ b/api/HTMLMetaElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMetaElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmlmetaelement",
+        "tags": [
+          "web-features:meta"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMetaElement/content",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-meta-content",
+          "tags": [
+            "web-features:meta"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -70,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,6 +91,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMetaElement/httpEquiv",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-meta-httpequiv",
+          "tags": [
+            "web-features:meta"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -110,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,6 +135,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMetaElement/media",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-meta-media",
+          "tags": [
+            "web-features:meta"
+          ],
           "support": {
             "chrome": {
               "version_added": "93"
@@ -144,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,6 +173,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMetaElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-meta-name",
+          "tags": [
+            "web-features:meta"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -184,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +244,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLMeterElement.json b/api/HTMLMeterElement.json
index 0582abbe227e32..7482be549466bb 100644
--- a/api/HTMLMeterElement.json
+++ b/api/HTMLMeterElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -41,6 +42,7 @@
       },
       "high": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/high",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-high",
           "support": {
             "chrome": {
@@ -69,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,6 +124,7 @@
       },
       "low": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/low",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-low",
           "support": {
             "chrome": {
@@ -148,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,6 +165,7 @@
       },
       "max": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/max",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-max",
           "support": {
             "chrome": {
@@ -187,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,6 +206,7 @@
       },
       "min": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/min",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-min",
           "support": {
             "chrome": {
@@ -226,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,6 +247,7 @@
       },
       "optimum": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/optimum",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-optimum",
           "support": {
             "chrome": {
@@ -265,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -276,6 +288,7 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLMeterElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-meter-value",
           "support": {
             "chrome": {
@@ -304,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLModElement.json b/api/HTMLModElement.json
index 35d58490374282..10cb3b21e62a16 100644
--- a/api/HTMLModElement.json
+++ b/api/HTMLModElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLModElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/edits.html#htmlmodelement",
+        "tags": [
+          "web-features:del"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
       "cite": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/edits.html#dom-mod-cite",
+          "tags": [
+            "web-features:del"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -73,7 +80,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,6 +93,9 @@
       "dateTime": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/edits.html#dom-mod-datetime",
+          "tags": [
+            "web-features:del"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -114,7 +125,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLOListElement.json b/api/HTMLOListElement.json
index da07fd2d4786c2..5dcb1bf06a49ff 100644
--- a/api/HTMLOListElement.json
+++ b/api/HTMLOListElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOListElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlolistelement",
+        "tags": [
+          "web-features:list-elements"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,6 +91,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOListElement/reversed",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#dom-ol-reversed",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "18"
@@ -111,7 +119,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,6 +133,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOListElement/start",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#dom-ol-start",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -153,7 +165,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,6 +179,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOListElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#dom-ol-type",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -195,7 +211,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLObjectElement.json b/api/HTMLObjectElement.json
index 13cd8c8b941997..de2219bfd201af 100644
--- a/api/HTMLObjectElement.json
+++ b/api/HTMLObjectElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlobjectelement",
+        "tags": [
+          "web-features:object"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +119,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +161,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +207,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +249,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,7 +291,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +333,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -336,6 +347,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/contentDocument",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-object-contentdocument",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -365,7 +379,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,6 +393,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/contentWindow",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-object-contentwindow",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "53"
@@ -401,7 +419,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,6 +433,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/data",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-object-data",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -443,7 +465,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -484,7 +507,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,6 +521,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -526,7 +553,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -538,6 +566,9 @@
       "getSVGDocument": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-media-getsvgdocument",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -567,7 +598,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -580,6 +612,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-height",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -609,7 +644,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -650,7 +686,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -663,6 +700,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-object-name",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -692,7 +732,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -703,6 +744,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity",
           "tags": [
             "web-features:constraint-validation"
@@ -730,7 +772,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -776,7 +819,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -817,7 +861,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -830,6 +875,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#dom-object-type",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -859,7 +907,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -901,7 +950,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -946,7 +996,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -991,7 +1042,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1032,7 +1084,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1045,6 +1098,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLObjectElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-width",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1074,7 +1130,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1121,7 +1178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLOptGroupElement.json b/api/HTMLOptGroupElement.json
index 451010e3513ef7..3989f247caac18 100644
--- a/api/HTMLOptGroupElement.json
+++ b/api/HTMLOptGroupElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOptGroupElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmloptgroupelement",
+        "tags": [
+          "web-features:select"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
       "disabled": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-optgroup-disabled",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -73,7 +80,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,6 +93,9 @@
       "label": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-optgroup-label",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -114,7 +125,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLOptionElement.json b/api/HTMLOptionElement.json
index 45c83026c58d2f..f83ef5c5bc8f08 100644
--- a/api/HTMLOptionElement.json
+++ b/api/HTMLOptionElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOptionElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmloptionelement",
+        "tags": [
+          "web-features:select"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
           "description": "<code>Option()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOptionElement/Option",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -72,7 +79,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,6 +92,9 @@
       "defaultSelected": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-defaultselected",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -113,7 +124,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,6 +137,9 @@
       "disabled": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-disabled",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -154,7 +169,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +181,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOptionElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-form-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -195,7 +215,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,6 +228,9 @@
       "index": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-index-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -236,7 +260,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,6 +273,9 @@
       "label": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-label",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -285,7 +313,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,6 +326,9 @@
       "selected": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-selected-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -326,7 +358,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -338,6 +371,9 @@
       "text": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-text-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -367,7 +403,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +415,11 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOptionElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-value",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -408,7 +449,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLOptionsCollection.json b/api/HTMLOptionsCollection.json
index b9a8eb45b5e0f1..80e7021847b38c 100644
--- a/api/HTMLOptionsCollection.json
+++ b/api/HTMLOptionsCollection.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLOutputElement.json b/api/HTMLOutputElement.json
index b623b46ffcc4a9..d636d7f721409d 100644
--- a/api/HTMLOutputElement.json
+++ b/api/HTMLOutputElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmloutputelement",
+        "tags": [
+          "web-features:output"
+        ],
         "support": {
           "chrome": {
             "version_added": "9"
@@ -33,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "description": "<code>HTMLOutputElement()</code> constructor",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmloutputelement",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -66,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -77,6 +85,7 @@
       },
       "checkValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/checkValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-checkvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -110,7 +119,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,6 +132,9 @@
       "defaultValue": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-defaultvalue-dev",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -151,7 +164,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +176,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -192,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,6 +223,9 @@
       "htmlFor": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-htmlfor",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9",
@@ -231,7 +253,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "Before Chrome 50, this property returned the deprecated child <code>DOMSettableTokenList</code> instead of <code>DOMTokenList</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,6 +267,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/labels",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-lfe-labels-dev",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -273,7 +299,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -284,7 +311,11 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -314,7 +345,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,6 +357,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -352,7 +385,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +431,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -408,7 +443,11 @@
       },
       "type": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-type-dev",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -434,7 +473,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -478,7 +518,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -489,6 +530,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -522,7 +564,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -533,7 +576,11 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-value-dev",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -563,7 +610,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,6 +622,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLOutputElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -607,7 +656,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLParagraphElement.json b/api/HTMLParagraphElement.json
index 0b37ebf033dfa8..48697e71a8a5b0 100644
--- a/api/HTMLParagraphElement.json
+++ b/api/HTMLParagraphElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLParagraphElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlparagraphelement",
+        "tags": [
+          "web-features:p"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLParamElement.json b/api/HTMLParamElement.json
index 9874677e7bd2c5..d6c6e1fcb8931f 100644
--- a/api/HTMLParamElement.json
+++ b/api/HTMLParamElement.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLPictureElement.json b/api/HTMLPictureElement.json
index 76338af488d02b..3d1907b375ff7b 100644
--- a/api/HTMLPictureElement.json
+++ b/api/HTMLPictureElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLPictureElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#htmlpictureelement",
+        "tags": [
+          "web-features:picture"
+        ],
         "support": {
           "chrome": {
             "version_added": "38"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/HTMLPortalElement.json b/api/HTMLPortalElement.json
index 7d3507d88d2fa8..45d3a4c9172cf7 100644
--- a/api/HTMLPortalElement.json
+++ b/api/HTMLPortalElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/api/HTMLPreElement.json b/api/HTMLPreElement.json
index 6de6c7b96b31f4..225a4d754255aa 100644
--- a/api/HTMLPreElement.json
+++ b/api/HTMLPreElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLPreElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlpreelement",
+        "tags": [
+          "web-features:pre"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLProgressElement.json b/api/HTMLProgressElement.json
index 929a12e587a041..08721b4d463df0 100644
--- a/api/HTMLProgressElement.json
+++ b/api/HTMLProgressElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLProgressElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmlprogresselement",
+        "tags": [
+          "web-features:progress"
+        ],
         "support": {
           "chrome": {
             "version_added": "6"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLProgressElement/labels",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-lfe-labels-dev",
+          "tags": [
+            "web-features:progress"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -70,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,6 +91,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLProgressElement/max",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-max",
+          "tags": [
+            "web-features:progress"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -110,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,6 +135,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLProgressElement/position",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-position-dev",
+          "tags": [
+            "web-features:progress"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -150,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,6 +179,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLProgressElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-value",
+          "tags": [
+            "web-features:progress"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -190,7 +209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLQuoteElement.json b/api/HTMLQuoteElement.json
index 1ba6aa3773a9bb..f4497cabdd1a6c 100644
--- a/api/HTMLQuoteElement.json
+++ b/api/HTMLQuoteElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLQuoteElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlquoteelement",
+        "tags": [
+          "web-features:q"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -46,6 +50,9 @@
       "cite": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#dom-quote-cite",
+          "tags": [
+            "web-features:q"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -77,7 +84,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLScriptElement.json b/api/HTMLScriptElement.json
index b898b84c7512f5..f4f16cee6c2121 100644
--- a/api/HTMLScriptElement.json
+++ b/api/HTMLScriptElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement",
+        "tags": [
+          "web-features:script"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -47,6 +51,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/async",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-async",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -72,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -186,7 +196,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/crossOrigin",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-crossorigin",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -222,7 +236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,6 +250,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/defer",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-defer",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -265,7 +283,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -302,7 +321,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +352,15 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "127",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "network.fetchpriority.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://bugzil.la/1797715"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -346,7 +374,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -383,7 +412,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -396,6 +426,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/integrity",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-integrity",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "45"
@@ -421,7 +454,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -457,7 +491,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -470,6 +505,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/referrerPolicy",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-referrerpolicy",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": {
               "version_added": "70"
@@ -491,7 +529,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -524,7 +563,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -558,7 +598,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -592,7 +633,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -606,6 +648,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-src",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -635,7 +680,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -649,6 +695,9 @@
           "description": "<code>supports()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/supports_static",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-supports-dev",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "96"
@@ -670,7 +719,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -683,6 +733,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/text",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-text-dev",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -712,7 +765,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -725,6 +779,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLScriptElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-script-type",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -754,7 +811,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLSelectElement.json b/api/HTMLSelectElement.json
index b54ba0ebbac60e..62e12137f1c427 100644
--- a/api/HTMLSelectElement.json
+++ b/api/HTMLSelectElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmlselectelement",
+        "tags": [
+          "web-features:select"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -36,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/add",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-add-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -77,7 +84,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,6 +96,9 @@
         "index_before_parameter": {
           "__compat": {
             "description": "Index as <code>before</code> parameter",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "35"
@@ -111,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,6 +136,9 @@
       "autocomplete": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-autocomplete",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -161,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +224,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,6 +238,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/disabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-disabled",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -250,7 +270,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,6 +284,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -292,7 +316,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,6 +330,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/item",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-item-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -334,7 +362,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -347,6 +376,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/labels",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-lfe-labels-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -376,7 +408,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -388,6 +421,9 @@
       "length": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-length-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -417,7 +453,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -429,6 +466,9 @@
       "multiple": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-multiple",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -458,7 +498,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -469,7 +510,11 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -499,7 +544,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -512,6 +558,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/namedItem",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-nameditem-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -543,7 +592,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -556,6 +606,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/options",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-options-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -585,7 +638,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -598,6 +652,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/remove",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-remove",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -627,7 +684,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -638,6 +696,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -667,7 +726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -679,6 +739,9 @@
       "required": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-required",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "10"
@@ -708,7 +771,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -721,6 +785,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/selectedIndex",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-selectedindex-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -750,7 +817,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -763,6 +831,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/selectedOptions",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-selectedoptions-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "19"
@@ -790,7 +861,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -838,7 +910,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -882,7 +955,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -894,6 +968,9 @@
       "size": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-size",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -923,7 +1000,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -936,6 +1014,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-type-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -965,7 +1046,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1011,7 +1093,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1022,6 +1105,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -1057,7 +1141,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1070,6 +1155,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-value-dev",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1099,7 +1187,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1110,6 +1199,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSelectElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -1145,7 +1235,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLSlotElement.json b/api/HTMLSlotElement.json
index 06250373e2a4b4..d9bb9d3f5b45ee 100644
--- a/api/HTMLSlotElement.json
+++ b/api/HTMLSlotElement.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLSourceElement.json b/api/HTMLSourceElement.json
index 99c52009ff0ac9..7f03eec7860a10 100644
--- a/api/HTMLSourceElement.json
+++ b/api/HTMLSourceElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +188,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,7 +267,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +302,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLSpanElement.json b/api/HTMLSpanElement.json
index 302b7efaef1ece..e57dcfbd01e58e 100644
--- a/api/HTMLSpanElement.json
+++ b/api/HTMLSpanElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSpanElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmlspanelement",
+        "tags": [
+          "web-features:span"
+        ],
         "support": {
           "chrome": {
             "version_added": "15"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/HTMLStyleElement.json b/api/HTMLStyleElement.json
index 13b8235a2f89e4..4202e61e6b7976 100644
--- a/api/HTMLStyleElement.json
+++ b/api/HTMLStyleElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLStyleElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmlstyleelement",
+        "tags": [
+          "web-features:style"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -82,6 +87,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLStyleElement/disabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-style-disabled",
+          "tags": [
+            "web-features:style"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -109,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,6 +131,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLStyleElement/media",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-style-media",
+          "tags": [
+            "web-features:style"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -149,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableCaptionElement.json b/api/HTMLTableCaptionElement.json
index 0566a96d5e1bdd..4a12ed814c0289 100644
--- a/api/HTMLTableCaptionElement.json
+++ b/api/HTMLTableCaptionElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCaptionElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltablecaptionelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableCellElement.json b/api/HTMLTableCellElement.json
index bfc5e600b017fe..ccde4d69ce822e 100644
--- a/api/HTMLTableCellElement.json
+++ b/api/HTMLTableCellElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltablecellelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/abbr",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-th-abbr",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -74,7 +81,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +124,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,7 +166,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +209,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,6 +223,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/cellIndex",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-cellindex",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -241,7 +255,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +298,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,7 +341,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -338,6 +355,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/colSpan",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-colspan",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -367,7 +387,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -380,6 +401,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/headers",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-headers",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -409,7 +433,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -450,7 +475,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -492,7 +518,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -505,6 +532,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/rowSpan",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-rowspan",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -534,7 +564,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -547,6 +578,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableCellElement/scope",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-th-scope",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -576,7 +610,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -618,7 +653,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -659,7 +695,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableColElement.json b/api/HTMLTableColElement.json
index 48ec4fba7231a0..019ceeb7c45801 100644
--- a/api/HTMLTableColElement.json
+++ b/api/HTMLTableColElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableColElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltablecolelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +121,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +164,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +178,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableColElement/span",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-colgroup-span",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -200,7 +210,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +253,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +295,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableElement.json b/api/HTMLTableElement.json
index 908f901880bee4..438bb514b286a5 100644
--- a/api/HTMLTableElement.json
+++ b/api/HTMLTableElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltableelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +121,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +164,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +178,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/caption",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-caption-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -200,7 +210,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +253,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -284,7 +296,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,6 +310,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/createCaption",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-createcaption-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -326,7 +342,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,6 +356,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/createTBody",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-createtbody-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -362,7 +382,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,6 +396,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/createTFoot",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-createtfoot-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -404,7 +428,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -417,6 +442,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/createTHead",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-createthead-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -446,7 +474,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,6 +488,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/deleteCaption",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-deletecaption-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -488,7 +520,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,6 +534,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/deleteRow",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-deleterow-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -530,7 +566,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -543,6 +580,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/deleteTFoot",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-deletetfoot-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -572,7 +612,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -585,6 +626,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/deleteTHead",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-deletethead-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -614,7 +658,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -656,7 +701,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -669,6 +715,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/insertRow",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-insertrow-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -701,7 +750,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -714,6 +764,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/rows",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-rows-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -743,7 +796,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -785,7 +839,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -827,7 +882,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -840,6 +896,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/tBodies",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-tbodies-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -869,7 +928,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -882,6 +942,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/tFoot",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-tfoot-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -911,7 +974,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -924,6 +988,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableElement/tHead",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-table-thead-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -953,7 +1020,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -995,7 +1063,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableRowElement.json b/api/HTMLTableRowElement.json
index 884cf7108d9817..53ae1bda1460b1 100644
--- a/api/HTMLTableRowElement.json
+++ b/api/HTMLTableRowElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltablerowelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +121,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,6 +135,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement/cells",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tr-cells",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -158,7 +167,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +210,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +253,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,6 +267,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement/deleteCell",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tr-deletecell",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -284,7 +299,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,6 +313,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement/insertCell",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tr-insertcell-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -326,7 +345,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -337,6 +357,9 @@
         "index_parameter_negative_one": {
           "__compat": {
             "description": "<code>index</code> parameter can be <code>-1</code>",
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -366,7 +389,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -378,6 +402,9 @@
         "index_parameter_optional": {
           "__compat": {
             "description": "<code>index</code> parameter is optional",
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -403,7 +430,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -417,6 +445,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement/rowIndex",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tr-rowindex-dev",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -446,7 +477,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,6 +491,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableRowElement/sectionRowIndex",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tr-sectionrowindex",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -488,7 +523,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -530,7 +566,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTableSectionElement.json b/api/HTMLTableSectionElement.json
index a0278105a1089a..dbcc92043c30e3 100644
--- a/api/HTMLTableSectionElement.json
+++ b/api/HTMLTableSectionElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableSectionElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#htmltablesectionelement",
+        "tags": [
+          "web-features:table"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +78,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +121,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +164,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +178,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableSectionElement/deleteRow",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-deleterow",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -200,7 +210,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,6 +224,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableSectionElement/insertRow",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-insertrow",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -242,7 +256,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,6 +270,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTableSectionElement/rows",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-rows",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -284,7 +302,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -326,7 +345,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTemplateElement.json b/api/HTMLTemplateElement.json
index 528b282acd80df..e53c46ed010b39 100644
--- a/api/HTMLTemplateElement.json
+++ b/api/HTMLTemplateElement.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +177,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTextAreaElement.json b/api/HTMLTextAreaElement.json
index 5fd5f99232394b..7f4e4ffbc0450a 100644
--- a/api/HTMLTextAreaElement.json
+++ b/api/HTMLTextAreaElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#htmltextareaelement",
+        "tags": [
+          "web-features:textarea"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,7 +47,11 @@
       },
       "autocomplete": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/autocomplete",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-autocomplete",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "66"
@@ -65,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +85,7 @@
       },
       "checkValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/checkValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-checkvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -111,7 +121,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +133,11 @@
       },
       "cols": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/cols",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-cols",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -150,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +177,11 @@
       },
       "defaultValue": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/defaultValue",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-defaultvalue",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -189,7 +209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +262,11 @@
       },
       "disabled": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/disabled",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-disabled",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -268,7 +294,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +306,11 @@
       },
       "form": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fae-form-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -307,7 +338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,6 +352,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/labels",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-lfe-labels-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -349,7 +384,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,6 +397,9 @@
       "maxLength": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-maxlength",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -392,7 +431,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -404,6 +444,9 @@
       "minLength": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-minlength",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -427,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -438,7 +482,11 @@
       },
       "name": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/name",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fe-name",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -466,7 +514,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,7 +526,11 @@
       },
       "placeholder": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/placeholder",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-placeholder",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -509,7 +562,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -520,7 +574,11 @@
       },
       "readOnly": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/readOnly",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-readonly",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -548,7 +606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -559,6 +618,7 @@
       },
       "reportValidity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/reportValidity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -588,7 +648,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -599,7 +660,11 @@
       },
       "required": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/required",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-required",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -631,7 +696,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -642,7 +708,11 @@
       },
       "rows": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/rows",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-rows",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -670,7 +740,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -682,6 +753,9 @@
       "select": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-select-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -709,7 +783,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -726,6 +801,9 @@
             "https://html.spec.whatwg.org/multipage/indices.html#event-select",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onselect"
           ],
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -753,7 +831,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -793,7 +872,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -805,6 +885,9 @@
       "selectionDirection": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectiondirection",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -830,7 +913,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -842,6 +926,9 @@
       "selectionEnd": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectionend",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -869,7 +956,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -881,6 +969,9 @@
       "selectionStart": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectionstart",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -908,7 +999,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -955,7 +1047,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -967,6 +1060,9 @@
       "setRangeText": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-setrangetext-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -988,7 +1084,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1000,6 +1097,9 @@
       "setSelectionRange": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-setselectionrange-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1027,7 +1127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1038,7 +1139,11 @@
       },
       "textLength": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/textLength",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-textlength",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -1070,7 +1175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1083,6 +1189,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/type",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-type-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1110,7 +1219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1156,7 +1266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1167,6 +1278,7 @@
       },
       "validity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/validity",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#the-constraint-validation-api:dom-cva-validity",
           "tags": [
             "web-features:constraint-validation"
@@ -1202,7 +1314,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1213,7 +1326,11 @@
       },
       "value": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/value",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-value-dev",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1241,7 +1358,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1252,6 +1370,7 @@
       },
       "willValidate": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/willValidate",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-willvalidate-dev",
           "tags": [
             "web-features:constraint-validation"
@@ -1285,7 +1404,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1296,7 +1416,11 @@
       },
       "wrap": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/wrap",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#dom-textarea-wrap",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "16"
@@ -1324,7 +1448,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTimeElement.json b/api/HTMLTimeElement.json
index 9f2aaf59ff5047..cf4a104cc2c6ce 100644
--- a/api/HTMLTimeElement.json
+++ b/api/HTMLTimeElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTimeElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmltimeelement",
+        "tags": [
+          "web-features:time"
+        ],
         "support": {
           "chrome": {
             "version_added": "62"
@@ -43,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -55,6 +59,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTimeElement/dateTime",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#dom-time-datetime",
+          "tags": [
+            "web-features:time"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -94,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTitleElement.json b/api/HTMLTitleElement.json
index 6aee24740832fe..eb113f1d4d969e 100644
--- a/api/HTMLTitleElement.json
+++ b/api/HTMLTitleElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTitleElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#htmltitleelement",
+        "tags": [
+          "web-features:title"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTitleElement/text",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#dom-title-text-dev",
+          "tags": [
+            "web-features:title"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -74,7 +81,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLTrackElement.json b/api/HTMLTrackElement.json
index 653fed3ab3c350..4c86cae71d559f 100644
--- a/api/HTMLTrackElement.json
+++ b/api/HTMLTrackElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTrackElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#htmltrackelement",
+        "tags": [
+          "web-features:text-tracks"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -32,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-cuechange",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncuechange"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": [
               {
@@ -120,7 +127,8 @@
                 "partial_implementation": true,
                 "notes": "The <code>oncuechange</code> event handler property is not supported."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,6 +140,9 @@
       "default": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-default",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -159,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +183,9 @@
       "kind": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-kind",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -198,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,6 +226,9 @@
       "label": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-label",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -237,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,6 +269,9 @@
       "readyState": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-readystate-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -276,7 +299,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -289,6 +313,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLTrackElement/src",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-src",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -317,7 +344,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,6 +357,9 @@
       "srclang": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-srclang",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -356,7 +387,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -368,6 +400,9 @@
       "track": {
         "__compat": {
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-track-track-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -395,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLUListElement.json b/api/HTMLUListElement.json
index 5048053c0cc95d..053116cb3d55f8 100644
--- a/api/HTMLUListElement.json
+++ b/api/HTMLUListElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLUListElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#htmlulistelement",
+        "tags": [
+          "web-features:list-elements"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +77,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +119,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HTMLUnknownElement.json b/api/HTMLUnknownElement.json
index 2d51f455ae4c7c..d7a47d1e5f0c4d 100644
--- a/api/HTMLUnknownElement.json
+++ b/api/HTMLUnknownElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/HTMLVideoElement.json b/api/HTMLVideoElement.json
index 30bdd734780acd..564ac76b064d2b 100644
--- a/api/HTMLVideoElement.json
+++ b/api/HTMLVideoElement.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#htmlvideoelement",
+        "tags": [
+          "web-features:video"
+        ],
         "support": {
           "chrome": {
             "version_added": "3"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +61,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
+              "version_added": "preview",
               "impl_url": "https://bugzil.la/1800882"
             },
             "firefox_android": "mirror",
@@ -72,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +131,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -172,7 +178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,7 +218,8 @@
               "version_added": "12.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,6 +232,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement/height",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-height",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -255,7 +266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -301,7 +313,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -333,7 +346,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +379,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -429,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -461,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -493,7 +511,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -526,7 +545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -539,6 +559,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement/poster",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-video-poster",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -570,7 +593,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -612,7 +636,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -635,8 +660,10 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1800882"
+              "version_added": "preview",
+              "impl_url": "https://bugzil.la/1800882",
+              "partial_implementation": true,
+              "notes": "The <code>metadata</code> argument of the callback function does not support the following properties: <code>processingDuration</code> (<a href='https://bugzil.la/1908246'>bug 1908246</a>), <code>captureTime</code>, <code>receiveTime</code>, and <code>rtpTimestamp</code> (<a href='https://bugzil.la/1908245'>bug 1908245</a>)."
             },
             "firefox_android": "mirror",
             "ie": {
@@ -650,7 +677,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -667,6 +695,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-resize",
             "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onresize"
           ],
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -708,7 +739,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -721,6 +753,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement/videoHeight",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-video-videoheight-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -752,7 +787,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -765,6 +801,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement/videoWidth",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-video-videowidth-dev",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -796,7 +835,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -809,6 +849,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLVideoElement/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#dom-dim-width",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -840,7 +883,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HashChangeEvent.json b/api/HashChangeEvent.json
index b7bbebaae29850..73a9b35f9748f7 100644
--- a/api/HashChangeEvent.json
+++ b/api/HashChangeEvent.json
@@ -33,7 +33,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -149,7 +152,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Headers.json b/api/Headers.json
index 339a9fa14720c8..284e8a8cf06c6a 100644
--- a/api/Headers.json
+++ b/api/Headers.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers",
         "spec_url": "https://fetch.spec.whatwg.org/#headers-class",
+        "tags": [
+          "web-features:fetch"
+        ],
         "support": {
           "chrome": {
             "version_added": "42"
@@ -33,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -46,6 +50,9 @@
           "description": "<code>Headers()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/Headers",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -75,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,6 +96,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/append",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers-append①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -117,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,6 +142,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/delete",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers-delete①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -159,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,6 +272,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/get",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers-get①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42",
@@ -285,7 +306,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -338,6 +361,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/has",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers-has①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -367,7 +393,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -405,7 +432,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -446,7 +474,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -487,7 +516,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -500,6 +530,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Headers/set",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-headers-set①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -529,7 +562,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -570,7 +604,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -611,7 +646,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Highlight.json b/api/Highlight.json
index 7496f74ef7c1bb..5b70f8ec8d3421 100644
--- a/api/Highlight.json
+++ b/api/Highlight.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -289,7 +296,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -326,7 +334,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,7 +373,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -401,7 +411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -439,7 +450,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -476,7 +488,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -513,7 +526,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/HighlightRegistry.json b/api/HighlightRegistry.json
index 9e6f146e967ec9..145a0f259b285f 100644
--- a/api/HighlightRegistry.json
+++ b/api/HighlightRegistry.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +294,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -324,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,7 +370,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -435,7 +446,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/History.json b/api/History.json
index 516c6804337026..77ac950541648f 100644
--- a/api/History.json
+++ b/api/History.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +240,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +277,8 @@
                 "notes": "This feature may be removed, see <a href='https://webkit.org/b/223190'>bug 223190</a>."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -317,7 +324,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -353,7 +361,8 @@
                 "notes": "This feature may be removed, see <a href='https://webkit.org/b/223190'>bug 223190</a>."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -388,7 +397,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -428,7 +438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBCursor.json b/api/IDBCursor.json
index 16f4fb1d5e4adf..48eb5c6df79ac1 100644
--- a/api/IDBCursor.json
+++ b/api/IDBCursor.json
@@ -70,7 +70,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -104,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -330,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,7 +372,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -403,7 +412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +447,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -475,7 +486,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -513,7 +525,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBCursorWithValue.json b/api/IDBCursorWithValue.json
index 8a6e91efab4924..015060188e9ad9 100644
--- a/api/IDBCursorWithValue.json
+++ b/api/IDBCursorWithValue.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBDatabase.json b/api/IDBDatabase.json
index 8ef3a8fae3ca33..c58b6e9bd45cd2 100644
--- a/api/IDBDatabase.json
+++ b/api/IDBDatabase.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +171,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,7 +249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,7 +327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -358,7 +366,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +406,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -436,7 +446,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -478,7 +489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBFactory.json b/api/IDBFactory.json
index a1d0d73069c9c7..0316804bedb8d4 100644
--- a/api/IDBFactory.json
+++ b/api/IDBFactory.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -238,47 +243,14 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
-        },
-        "options_parameter": {
-          "__compat": {
-            "description": "<code>options</code> parameter for setting temporary/persistent storage.",
-            "support": {
-              "chrome": {
-                "version_added": false
-              },
-              "chrome_android": "mirror",
-              "edge": "mirror",
-              "firefox": {
-                "version_added": "26",
-                "version_removed": "104"
-              },
-              "firefox_android": "mirror",
-              "ie": {
-                "version_added": false
-              },
-              "oculus": "mirror",
-              "opera": "mirror",
-              "opera_android": "mirror",
-              "safari": {
-                "version_added": false
-              },
-              "safari_ios": "mirror",
-              "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
-            },
-            "status": {
-              "experimental": false,
-              "standard_track": false,
-              "deprecated": true
-            }
-          }
         }
       }
     }
diff --git a/api/IDBIndex.json b/api/IDBIndex.json
index a7fab6cf238e6f..eddd94c0109cc1 100644
--- a/api/IDBIndex.json
+++ b/api/IDBIndex.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +239,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +278,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -312,7 +319,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +358,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -390,7 +399,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -428,7 +438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +477,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -500,7 +512,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -539,7 +552,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -577,7 +591,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -615,7 +630,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -653,7 +669,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBKeyRange.json b/api/IDBKeyRange.json
index 61df0a3175d554..047b0737b0a16b 100644
--- a/api/IDBKeyRange.json
+++ b/api/IDBKeyRange.json
@@ -61,7 +61,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -95,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -322,7 +329,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +368,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +447,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBObjectStore.json b/api/IDBObjectStore.json
index 4451f11ce77ed8..f9bf81dd361b2f 100644
--- a/api/IDBObjectStore.json
+++ b/api/IDBObjectStore.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +245,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -349,7 +357,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -387,7 +396,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -425,7 +435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -461,7 +472,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,7 +509,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -537,7 +550,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -575,7 +589,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -613,7 +628,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -651,7 +667,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -689,7 +706,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -723,7 +741,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -762,7 +781,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -796,7 +816,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -834,7 +855,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -872,7 +894,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBOpenDBRequest.json b/api/IDBOpenDBRequest.json
index 66e935c1b18c32..8926b9e59257e4 100644
--- a/api/IDBOpenDBRequest.json
+++ b/api/IDBOpenDBRequest.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBRequest.json b/api/IDBRequest.json
index d3dccf64141ba6..d3f8865b91e328 100644
--- a/api/IDBRequest.json
+++ b/api/IDBRequest.json
@@ -65,7 +65,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -99,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -211,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,7 +372,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -402,7 +411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBTransaction.json b/api/IDBTransaction.json
index 843482368143f4..836d3441033a40 100644
--- a/api/IDBTransaction.json
+++ b/api/IDBTransaction.json
@@ -56,7 +56,8 @@
               "version_added": "≤37",
               "version_removed": "57"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +245,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -352,7 +360,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -386,7 +395,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -426,7 +436,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -464,7 +475,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -502,7 +514,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -513,7 +526,7 @@
       },
       "objectStoreNames": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IDBTransaction/ObjectStoreNames",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IDBTransaction/objectStoreNames",
           "spec_url": "https://w3c.github.io/IndexedDB/#ref-for-dom-idbtransaction-objectstorenames①",
           "support": {
             "chrome": {
@@ -538,7 +551,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IDBVersionChangeEvent.json b/api/IDBVersionChangeEvent.json
index 341745204a8ec0..f411c557198faf 100644
--- a/api/IDBVersionChangeEvent.json
+++ b/api/IDBVersionChangeEvent.json
@@ -50,7 +50,8 @@
               "prefix": "webkit",
               "version_added": "≤37"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IIRFilterNode.json b/api/IIRFilterNode.json
index 2ae11ee9e034cf..72f9a8de3d4c17 100644
--- a/api/IIRFilterNode.json
+++ b/api/IIRFilterNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/IIRFilterNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#IIRFilterNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "49"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
           "description": "<code>IIRFilterNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/IIRFilterNode/IIRFilterNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-iirfilternode-constructor-iirfilternode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/IIRFilterNode/getFrequencyResponse",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-iirfilternode-getfrequencyresponse",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -97,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IdentityCredential.json b/api/IdentityCredential.json
index 2aaa73243a179c..d05134b547e251 100644
--- a/api/IdentityCredential.json
+++ b/api/IdentityCredential.json
@@ -3,7 +3,10 @@
     "IdentityCredential": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/IdentityCredential",
-        "spec_url": "https://fedidcg.github.io/FedCM/#browser-api-identity-credential-interface",
+        "spec_url": "https://w3c-fedid.github.io/FedCM/#browser-api-identity-credential-interface",
+        "tags": [
+          "web-features:fedcm"
+        ],
         "support": {
           "chrome": {
             "version_added": "108"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,7 +42,7 @@
       "disconnect_static": {
         "__compat": {
           "description": "<code>disconnect()</code> static method",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-identitycredential-disconnect",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identitycredential-disconnect",
           "support": {
             "chrome": {
               "version_added": "122"
@@ -62,7 +66,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -97,7 +102,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +115,10 @@
       "token": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/IdentityCredential/token",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-identitycredential-token",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identitycredential-token",
+          "tags": [
+            "web-features:fedcm"
+          ],
           "support": {
             "chrome": {
               "version_added": "108"
@@ -133,7 +142,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/IdentityProvider.json b/api/IdentityProvider.json
index 3ce638fc09c90c..731ffa1090b701 100644
--- a/api/IdentityProvider.json
+++ b/api/IdentityProvider.json
@@ -3,7 +3,7 @@
     "IdentityProvider": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/IdentityProvider",
-        "spec_url": "https://fedidcg.github.io/FedCM/#browser-api-identity-provider-interface",
+        "spec_url": "https://w3c-fedid.github.io/FedCM/#browser-api-identity-provider-interface",
         "support": {
           "chrome": {
             "version_added": "116"
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,7 +40,7 @@
         "__compat": {
           "description": "<code>close()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/IdentityProvider/close_static",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-identityprovider-close",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identityprovider-close",
           "support": {
             "chrome": {
               "version_added": "120"
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -76,7 +78,7 @@
         "__compat": {
           "description": "<code>getUserInfo()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/IdentityProvider/getUserInfo_static",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-identityprovider-getuserinfo",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-identityprovider-getuserinfo",
           "support": {
             "chrome": {
               "version_added": "116"
@@ -100,7 +102,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/IdleDeadline.json b/api/IdleDeadline.json
index 352eac3efffbb4..67f6be590bb525 100644
--- a/api/IdleDeadline.json
+++ b/api/IdleDeadline.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IdleDetector.json b/api/IdleDetector.json
index 4a95c15cb0582c..5f6c67a2c283be 100644
--- a/api/IdleDetector.json
+++ b/api/IdleDetector.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -173,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -218,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -263,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -308,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ImageBitmap.json b/api/ImageBitmap.json
index e7969de84de138..8c0d14bc5cb7c6 100644
--- a/api/ImageBitmap.json
+++ b/api/ImageBitmap.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ImageBitmapRenderingContext.json b/api/ImageBitmapRenderingContext.json
index 2cd53c065957e4..f77b0791bc5a4b 100644
--- a/api/ImageBitmapRenderingContext.json
+++ b/api/ImageBitmapRenderingContext.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -35,6 +36,7 @@
       },
       "canvas": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ImageBitmapRenderingContext/canvas",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-imagebitmaprenderingcontext-canvas-dev",
           "support": {
             "chrome": {
@@ -57,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ImageCapture.json b/api/ImageCapture.json
index 87b214eda1b893..945e58b710e085 100644
--- a/api/ImageCapture.json
+++ b/api/ImageCapture.json
@@ -28,11 +28,19 @@
           "opera": "mirror",
           "opera_android": "mirror",
           "safari": {
-            "version_added": false
+            "version_added": "17.4",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "Image Capture API",
+                "value_to_set": "true"
+              }
+            ]
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,11 +77,19 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "17.4",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "Image Capture API",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -103,11 +119,19 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "17.4",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "Image Capture API",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -141,11 +165,19 @@
               "version_added": "43"
             },
             "safari": {
-              "version_added": false
+              "version_added": "17.4",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "Image Capture API",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -224,11 +257,19 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "17.4",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "Image Capture API",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -266,11 +307,19 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "17.4",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "Image Capture API",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ImageData.json b/api/ImageData.json
index 59ac79de83ea66..ae71379e2017eb 100644
--- a/api/ImageData.json
+++ b/api/ImageData.json
@@ -36,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +199,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +245,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +291,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ImageDecoder.json b/api/ImageDecoder.json
index bd0b07cce45a4d..5aa3b82cb80ae4 100644
--- a/api/ImageDecoder.json
+++ b/api/ImageDecoder.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -219,7 +224,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -334,7 +342,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -372,7 +381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ImageTrack.json b/api/ImageTrack.json
index 5f7d284487e13d..2b8833fb8bd6e9 100644
--- a/api/ImageTrack.json
+++ b/api/ImageTrack.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ImageTrackList.json b/api/ImageTrackList.json
index fd92ea5070642b..12c24e08b5c72a 100644
--- a/api/ImageTrackList.json
+++ b/api/ImageTrackList.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Ink.json b/api/Ink.json
index f1c7689ae867f5..be557de673e113 100644
--- a/api/Ink.json
+++ b/api/Ink.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/InkPresenter.json b/api/InkPresenter.json
index 5f1a5650478599..433f12edfab6ab 100644
--- a/api/InkPresenter.json
+++ b/api/InkPresenter.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/InputDeviceCapabilities.json b/api/InputDeviceCapabilities.json
index 65190c368db967..630b8274a1148a 100644
--- a/api/InputDeviceCapabilities.json
+++ b/api/InputDeviceCapabilities.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/InputDeviceInfo.json b/api/InputDeviceInfo.json
index 9a3a3509e5d0f0..f7c43b61fee7c7 100644
--- a/api/InputDeviceInfo.json
+++ b/api/InputDeviceInfo.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/InputEvent.json b/api/InputEvent.json
index 6fff510639a120..46e4eb8de0cd11 100644
--- a/api/InputEvent.json
+++ b/api/InputEvent.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -179,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +254,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/InstallEvent.json b/api/InstallEvent.json
index f00671b02ba5f5..2bd29d265f29d8 100644
--- a/api/InstallEvent.json
+++ b/api/InstallEvent.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -60,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/IntersectionObserver.json b/api/IntersectionObserver.json
index 46604ecae1bae3..add3cfb3112bf8 100644
--- a/api/IntersectionObserver.json
+++ b/api/IntersectionObserver.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -328,7 +336,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -368,7 +377,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -407,7 +417,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -440,7 +451,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -480,7 +492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/IntersectionObserverEntry.json b/api/IntersectionObserverEntry.json
index cbd1788fab66b2..0e08d2cc0594de 100644
--- a/api/IntersectionObserverEntry.json
+++ b/api/IntersectionObserverEntry.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -293,7 +300,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -371,7 +380,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/InterventionReportBody.json b/api/InterventionReportBody.json
index e27eb26f81628b..828f4b45938a13 100644
--- a/api/InterventionReportBody.json
+++ b/api/InterventionReportBody.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/KHR_parallel_shader_compile.json b/api/KHR_parallel_shader_compile.json
index 10746c3081d5dd..f4d3321fcb367d 100644
--- a/api/KHR_parallel_shader_compile.json
+++ b/api/KHR_parallel_shader_compile.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/Keyboard.json b/api/Keyboard.json
index 7a515d938f7077..a4b2281339961e 100644
--- a/api/Keyboard.json
+++ b/api/Keyboard.json
@@ -7,6 +7,9 @@
           "https://wicg.github.io/keyboard-map/#keyboard-interface",
           "https://wicg.github.io/keyboard-lock/#keyboard-interface"
         ],
+        "tags": [
+          "web-features:keyboard-lock"
+        ],
         "support": {
           "chrome": {
             "version_added": "68"
@@ -28,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -40,6 +44,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Keyboard/getLayoutMap",
           "spec_url": "https://wicg.github.io/keyboard-map/#h-keyboard-getlayoutmap",
+          "tags": [
+            "web-features:keyboard-map"
+          ],
           "support": {
             "chrome": {
               "version_added": "69"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Keyboard/lock",
           "spec_url": "https://wicg.github.io/keyboard-lock/#h-keyboard-lock",
+          "tags": [
+            "web-features:keyboard-lock"
+          ],
           "support": {
             "chrome": {
               "version_added": "68"
@@ -95,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,6 +120,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Keyboard/unlock",
           "spec_url": "https://wicg.github.io/keyboard-lock/#h-keyboard-unlock",
+          "tags": [
+            "web-features:keyboard-lock"
+          ],
           "support": {
             "chrome": {
               "version_added": "68"
@@ -129,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/KeyboardEvent.json b/api/KeyboardEvent.json
index 4646bd516f71b5..c237a12066a108 100644
--- a/api/KeyboardEvent.json
+++ b/api/KeyboardEvent.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -153,7 +156,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -187,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +234,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,7 +306,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -334,7 +342,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -367,7 +376,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -402,7 +412,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -437,7 +448,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -470,7 +482,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -503,7 +516,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -538,7 +552,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -581,7 +596,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -624,7 +640,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -659,7 +676,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -692,7 +710,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -735,7 +754,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -769,7 +789,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -806,7 +827,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -840,7 +862,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -876,7 +899,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -912,7 +936,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -955,7 +980,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -989,7 +1015,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1025,7 +1052,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1068,7 +1096,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1106,7 +1135,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1148,7 +1178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/KeyboardLayoutMap.json b/api/KeyboardLayoutMap.json
index ee8be7cfed130b..77e18330766cbb 100644
--- a/api/KeyboardLayoutMap.json
+++ b/api/KeyboardLayoutMap.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/KeyboardLayoutMap",
         "spec_url": "https://wicg.github.io/keyboard-map/#keyboardlayoutmap-interface",
+        "tags": [
+          "web-features:keyboard-map"
+        ],
         "support": {
           "chrome": {
             "version_added": "69"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -125,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -158,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -191,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -224,7 +233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -257,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -290,7 +301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/KeyframeEffect.json b/api/KeyframeEffect.json
index eddf52032d9edd..e06cda3af1e06c 100644
--- a/api/KeyframeEffect.json
+++ b/api/KeyframeEffect.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -259,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/LargestContentfulPaint.json b/api/LargestContentfulPaint.json
index fb396a0a0e9213..03a27ae4af7783 100644
--- a/api/LargestContentfulPaint.json
+++ b/api/LargestContentfulPaint.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/LaunchParams.json b/api/LaunchParams.json
index 9e5100242dfebb..386620e48aed1a 100644
--- a/api/LaunchParams.json
+++ b/api/LaunchParams.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/LaunchQueue.json b/api/LaunchQueue.json
index 8c7d39f38087b8..5034b98d888d57 100644
--- a/api/LaunchQueue.json
+++ b/api/LaunchQueue.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/LayoutShift.json b/api/LayoutShift.json
index 57a3119e492e75..bdd7fd90655eeb 100644
--- a/api/LayoutShift.json
+++ b/api/LayoutShift.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/LayoutShiftAttribution.json b/api/LayoutShiftAttribution.json
index c6a8af62da16ae..b1c36a13f77994 100644
--- a/api/LayoutShiftAttribution.json
+++ b/api/LayoutShiftAttribution.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/LinearAccelerationSensor.json b/api/LinearAccelerationSensor.json
index 7c89a24dcabf46..29aad1bf6bce30 100644
--- a/api/LinearAccelerationSensor.json
+++ b/api/LinearAccelerationSensor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/LinearAccelerationSensor",
         "spec_url": "https://w3c.github.io/accelerometer/#linearaccelerationsensor-interface",
+        "tags": [
+          "web-features:accelerometer"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>LinearAccelerationSensor()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/LinearAccelerationSensor/LinearAccelerationSensor",
           "spec_url": "https://w3c.github.io/accelerometer/#dom-linearaccelerationsensor-linearaccelerationsensor",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Location.json b/api/Location.json
index 6d13770a3847ab..82f45a9b3923f1 100644
--- a/api/Location.json
+++ b/api/Location.json
@@ -42,7 +42,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -85,7 +86,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +140,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -187,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -383,7 +390,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -483,7 +492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -532,7 +542,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -585,7 +596,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -636,7 +648,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -686,7 +699,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -732,7 +746,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Lock.json b/api/Lock.json
index a5f829a2475f62..541f76e019357a 100644
--- a/api/Lock.json
+++ b/api/Lock.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/LockManager.json b/api/LockManager.json
index 8f22864f433dad..0c020e72b85917 100644
--- a/api/LockManager.json
+++ b/api/LockManager.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIAccess.json b/api/MIDIAccess.json
index 692a61e1cbca9c..84df3cabac1718 100644
--- a/api/MIDIAccess.json
+++ b/api/MIDIAccess.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIConnectionEvent.json b/api/MIDIConnectionEvent.json
index f75215bfa7e484..f4e84739b7fe87 100644
--- a/api/MIDIConnectionEvent.json
+++ b/api/MIDIConnectionEvent.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIInput.json b/api/MIDIInput.json
index 4c0ec1ef1f57d6..09647bfdfeff0f 100644
--- a/api/MIDIInput.json
+++ b/api/MIDIInput.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIInputMap.json b/api/MIDIInputMap.json
index 3fcdc5f6b1689a..e5036549282a4d 100644
--- a/api/MIDIInputMap.json
+++ b/api/MIDIInputMap.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +343,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIMessageEvent.json b/api/MIDIMessageEvent.json
index 94c05296744b23..3d4a6e239f8159 100644
--- a/api/MIDIMessageEvent.json
+++ b/api/MIDIMessageEvent.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIOutput.json b/api/MIDIOutput.json
index 790fb82ae98f20..c81f286405b010 100644
--- a/api/MIDIOutput.json
+++ b/api/MIDIOutput.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIOutputMap.json b/api/MIDIOutputMap.json
index 92104377c34ed8..4b8d32b738eda5 100644
--- a/api/MIDIOutputMap.json
+++ b/api/MIDIOutputMap.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +343,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MIDIPort.json b/api/MIDIPort.json
index 06a23c6f3d5244..b70636b7b6c458 100644
--- a/api/MIDIPort.json
+++ b/api/MIDIPort.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -351,7 +359,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -391,7 +400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -431,7 +441,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ML.json b/api/ML.json
index 6827ec14a7146b..67cbd84c6029d0 100644
--- a/api/ML.json
+++ b/api/ML.json
@@ -40,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MLContext.json b/api/MLContext.json
index 1b371bcf08a74e..795c15d68e9cfc 100644
--- a/api/MLContext.json
+++ b/api/MLContext.json
@@ -40,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MLGraph.json b/api/MLGraph.json
index c871017f3ba9ca..7310389e19cd41 100644
--- a/api/MLGraph.json
+++ b/api/MLGraph.json
@@ -39,7 +39,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/api/MLGraphBuilder.json b/api/MLGraphBuilder.json
index 42dfe8c5c0457c..dcafd4d4b615f2 100644
--- a/api/MLGraphBuilder.json
+++ b/api/MLGraphBuilder.json
@@ -40,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -89,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -162,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -235,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -284,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -333,7 +338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -406,7 +412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -455,7 +462,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -503,7 +511,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -552,7 +561,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -625,7 +635,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -698,7 +709,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -771,7 +783,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -844,7 +857,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -917,7 +931,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -979,7 +994,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1041,7 +1057,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1114,7 +1131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1187,7 +1205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1236,7 +1255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1285,7 +1305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1347,7 +1368,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1396,7 +1418,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1469,7 +1492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1518,7 +1542,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1591,7 +1616,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1640,7 +1666,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1689,7 +1716,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1738,7 +1766,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1787,7 +1816,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1836,7 +1866,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1909,7 +1940,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1958,7 +1990,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2031,7 +2064,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2080,7 +2114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2129,7 +2164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2178,7 +2214,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2251,7 +2288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2300,7 +2338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2349,7 +2388,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2398,7 +2438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2460,7 +2501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2509,7 +2551,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2558,7 +2601,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2607,7 +2651,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2656,7 +2701,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2729,7 +2775,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2802,7 +2849,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2875,7 +2923,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2948,7 +2997,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3021,7 +3071,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3094,7 +3145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3156,7 +3208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3218,7 +3271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3267,7 +3321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3316,7 +3371,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3365,7 +3421,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3414,7 +3471,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3463,7 +3521,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3512,7 +3571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3561,7 +3621,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3610,7 +3671,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3659,7 +3721,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3708,7 +3771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3757,7 +3821,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3830,7 +3895,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3903,7 +3969,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3976,7 +4043,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4049,7 +4117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4111,7 +4180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4173,7 +4243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4246,7 +4317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4295,7 +4367,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4344,7 +4417,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4406,7 +4480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4479,7 +4554,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4552,7 +4628,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4601,7 +4678,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4663,7 +4741,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4736,7 +4815,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4785,7 +4865,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4834,7 +4915,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MLOperand.json b/api/MLOperand.json
index 097ade6f68ab79..2b53b855a3195f 100644
--- a/api/MLOperand.json
+++ b/api/MLOperand.json
@@ -40,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -137,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Magnetometer.json b/api/Magnetometer.json
index c9938c04c6b380..aeee9668434f81 100644
--- a/api/Magnetometer.json
+++ b/api/Magnetometer.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -114,7 +116,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -155,7 +158,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -196,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ManagedMediaSource.json b/api/ManagedMediaSource.json
index 1bdb33a1cdb57e..3ae2aeacff7d51 100644
--- a/api/ManagedMediaSource.json
+++ b/api/ManagedMediaSource.json
@@ -29,7 +29,8 @@
             "version_added": "17.1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,7 +148,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -183,7 +187,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ManagedSourceBuffer.json b/api/ManagedSourceBuffer.json
index 5c00de37bf84a7..12519c2b4c07f9 100644
--- a/api/ManagedSourceBuffer.json
+++ b/api/ManagedSourceBuffer.json
@@ -29,7 +29,8 @@
             "version_added": "17.1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
               "version_added": "17.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MathMLElement.json b/api/MathMLElement.json
index 2df135018f66f3..3d8dc892a8474f 100644
--- a/api/MathMLElement.json
+++ b/api/MathMLElement.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,7 +233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,7 +302,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaCapabilities.json b/api/MediaCapabilities.json
index ea7d3f2079bcae..5e971e4aa0abed 100644
--- a/api/MediaCapabilities.json
+++ b/api/MediaCapabilities.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaController.json b/api/MediaController.json
index 1d9abb790d9395..0d050a8521f7c5 100644
--- a/api/MediaController.json
+++ b/api/MediaController.json
@@ -23,7 +23,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -55,7 +56,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -183,7 +188,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -247,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -311,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,7 +353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +386,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -407,7 +419,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -439,7 +452,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -471,7 +485,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -503,7 +518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaDeviceInfo.json b/api/MediaDeviceInfo.json
index 6c816f7c76eef8..d921b436de846b 100644
--- a/api/MediaDeviceInfo.json
+++ b/api/MediaDeviceInfo.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -223,7 +228,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaDevices.json b/api/MediaDevices.json
index 6e92fa5774980b..6b6af746f55d37 100644
--- a/api/MediaDevices.json
+++ b/api/MediaDevices.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +189,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +226,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -258,7 +263,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -295,7 +301,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -331,7 +338,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -375,7 +383,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -412,7 +421,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -449,7 +459,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -492,7 +503,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "53"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -542,7 +554,8 @@
             },
             "webview_android": {
               "version_added": "53"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,7 +587,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -611,7 +625,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -646,7 +661,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MediaElementAudioSourceNode.json b/api/MediaElementAudioSourceNode.json
index 25e01c84cb8e06..62070159216781 100644
--- a/api/MediaElementAudioSourceNode.json
+++ b/api/MediaElementAudioSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaElementAudioSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#MediaElementAudioSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "15"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>MediaElementAudioSourceNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaElementAudioSourceNode/MediaElementAudioSourceNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediaelementaudiosourcenode-mediaelementaudiosourcenode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaElementAudioSourceNode/mediaElement",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediaelementaudiosourcenode-mediaelement",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -99,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaEncryptedEvent.json b/api/MediaEncryptedEvent.json
index 554b43da062f2e..7156edae272e8c 100644
--- a/api/MediaEncryptedEvent.json
+++ b/api/MediaEncryptedEvent.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "43"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaError.json b/api/MediaError.json
index f134fc63d13b4f..7760cb74be7794 100644
--- a/api/MediaError.json
+++ b/api/MediaError.json
@@ -40,7 +40,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaKeyMessageEvent.json b/api/MediaKeyMessageEvent.json
index d5f0a1dee319b0..187c96724c6559 100644
--- a/api/MediaKeyMessageEvent.json
+++ b/api/MediaKeyMessageEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaKeySession.json b/api/MediaKeySession.json
index 2b94a832070030..6089e3aee1189d 100644
--- a/api/MediaKeySession.json
+++ b/api/MediaKeySession.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "43"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +277,8 @@
                 "partial_implementation": true,
                 "notes": "The <code>onkeystatuseschange</code> event handler property is not supported."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -309,7 +316,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -362,7 +370,8 @@
                 "partial_implementation": true,
                 "notes": "The <code>onmessage</code> event handler property is not supported."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -400,7 +409,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -438,7 +448,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -476,7 +487,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaKeyStatusMap.json b/api/MediaKeyStatusMap.json
index 11a72b653c6cbe..c9e3cb80a1b5ee 100644
--- a/api/MediaKeyStatusMap.json
+++ b/api/MediaKeyStatusMap.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "43"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,7 +143,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +220,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +259,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -290,7 +297,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -327,7 +335,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaKeySystemAccess.json b/api/MediaKeySystemAccess.json
index afc6048f98a064..151fddd756be5d 100644
--- a/api/MediaKeySystemAccess.json
+++ b/api/MediaKeySystemAccess.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "43"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaKeys.json b/api/MediaKeys.json
index 8fb272b9a2458f..71519d4a5a5e31 100644
--- a/api/MediaKeys.json
+++ b/api/MediaKeys.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "43"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaList.json b/api/MediaList.json
index 44b774de951646..f06ae28bc27022 100644
--- a/api/MediaList.json
+++ b/api/MediaList.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -269,7 +275,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaMetadata.json b/api/MediaMetadata.json
index f36013b6e767f2..6383d88c745828 100644
--- a/api/MediaMetadata.json
+++ b/api/MediaMetadata.json
@@ -34,7 +34,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,7 +231,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -265,7 +271,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaQueryList.json b/api/MediaQueryList.json
index 58a16fe7c97650..4bc700c9c2c135 100644
--- a/api/MediaQueryList.json
+++ b/api/MediaQueryList.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -187,7 +191,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -229,7 +234,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +278,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaQueryListEvent.json b/api/MediaQueryListEvent.json
index cfb658927d0881..cb4d5594f2a4a4 100644
--- a/api/MediaQueryListEvent.json
+++ b/api/MediaQueryListEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaRecorder.json b/api/MediaRecorder.json
index cf0206f497574d..2fc8b055c9250c 100644
--- a/api/MediaRecorder.json
+++ b/api/MediaRecorder.json
@@ -32,7 +32,8 @@
             "version_added": "14"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
                 "version_added": "14"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -251,7 +257,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +299,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,7 +351,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -377,7 +386,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -412,7 +422,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -448,7 +459,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -482,7 +494,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -517,7 +530,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -557,7 +571,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -594,7 +609,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -642,7 +658,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -678,7 +695,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -715,7 +733,8 @@
               "version_added": "14"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -765,7 +784,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "49"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -799,7 +819,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaRecorderErrorEvent.json b/api/MediaRecorderErrorEvent.json
index 33edd1830b7cc2..e41ec99aed89ae 100644
--- a/api/MediaRecorderErrorEvent.json
+++ b/api/MediaRecorderErrorEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaSession.json b/api/MediaSession.json
index 66f3997d769bf7..6d897f01bc6a29 100644
--- a/api/MediaSession.json
+++ b/api/MediaSession.json
@@ -36,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +174,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +209,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -240,7 +245,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -280,7 +286,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -320,7 +327,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -360,7 +368,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -395,7 +404,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -435,7 +445,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -475,7 +486,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -515,7 +527,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -550,7 +563,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -585,7 +599,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -620,7 +635,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -655,7 +671,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -690,7 +707,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -728,7 +746,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -765,7 +784,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -808,7 +828,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaSource.json b/api/MediaSource.json
index 1751a2aeed36c9..4e691a5d011444 100644
--- a/api/MediaSource.json
+++ b/api/MediaSource.json
@@ -43,7 +43,10 @@
             "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -99,7 +102,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -132,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -177,6 +184,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -222,6 +232,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -257,7 +270,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -297,7 +313,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -342,6 +361,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -387,6 +409,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -421,7 +446,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -481,6 +509,9 @@
                 "<code>codecs</code> string can contain any subset of optional parameters (should be all or none).",
                 "Errors if <code>codecs</code> string contains unexpected characters (should evaluate string up to character)."
               ]
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -528,7 +559,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -573,6 +607,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -613,7 +650,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -658,6 +698,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -741,7 +784,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -818,7 +864,10 @@
                 "partial_implementation": true,
                 "notes": "The <code>onsourceclose</code> event handler property is not supported."
               }
-            ]
+            ],
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -885,7 +934,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaSourceHandle.json b/api/MediaSourceHandle.json
index 813ed0dea4a477..5b6d327959a6aa 100644
--- a/api/MediaSourceHandle.json
+++ b/api/MediaSourceHandle.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/MediaStream.json b/api/MediaStream.json
index 1fe6b29fab7df6..51b62d0d5a671c 100644
--- a/api/MediaStream.json
+++ b/api/MediaStream.json
@@ -39,7 +39,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -89,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -313,7 +320,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -351,7 +359,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -390,7 +399,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -432,7 +442,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -468,7 +479,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -503,7 +515,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -541,7 +554,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -586,7 +600,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamAudioDestinationNode.json b/api/MediaStreamAudioDestinationNode.json
index c5b8c3438ce9ce..54eaf55207c9e3 100644
--- a/api/MediaStreamAudioDestinationNode.json
+++ b/api/MediaStreamAudioDestinationNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioDestinationNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#MediaStreamAudioDestinationNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "25"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>MediaStreamAudioDestinationNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioDestinationNode/MediaStreamAudioDestinationNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediastreamaudiodestinationnode-mediastreamaudiodestinationnode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioDestinationNode/stream",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediastreamaudiodestinationnode-stream",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "25"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamAudioSourceNode.json b/api/MediaStreamAudioSourceNode.json
index d364e2d45470f5..acaae5d946bb65 100644
--- a/api/MediaStreamAudioSourceNode.json
+++ b/api/MediaStreamAudioSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#MediaStreamAudioSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "22"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
           "description": "<code>MediaStreamAudioSourceNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioSourceNode/MediaStreamAudioSourceNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediastreamaudiosourcenode-mediastreamaudiosourcenode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamAudioSourceNode/mediaStream",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediastreamaudiosourcenode-mediastream",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "22"
@@ -95,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamEvent.json b/api/MediaStreamEvent.json
index a90b5274ac2ec7..4f1a35e398b5b4 100644
--- a/api/MediaStreamEvent.json
+++ b/api/MediaStreamEvent.json
@@ -36,7 +36,8 @@
           },
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamTrack.json b/api/MediaStreamTrack.json
index 9d06061afe44d1..2ddc98abdad4bf 100644
--- a/api/MediaStreamTrack.json
+++ b/api/MediaStreamTrack.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -146,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -183,7 +187,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -224,7 +229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -259,7 +265,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -333,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -370,7 +379,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -407,7 +417,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -444,7 +455,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -481,7 +493,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -516,7 +529,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -559,7 +573,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -593,7 +608,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -630,7 +646,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -667,7 +684,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -702,7 +720,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -738,7 +757,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -775,7 +795,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -815,7 +836,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -851,7 +873,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -885,7 +908,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -924,7 +948,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -961,7 +986,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -997,7 +1023,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1032,7 +1059,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1072,7 +1100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "53"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1108,7 +1137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1147,7 +1177,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1186,7 +1217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1225,7 +1257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1262,7 +1295,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1300,7 +1334,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1336,7 +1371,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1375,7 +1411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1412,7 +1449,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamTrackAudioSourceNode.json b/api/MediaStreamTrackAudioSourceNode.json
index ece26e19654ef9..6304872d51845c 100644
--- a/api/MediaStreamTrackAudioSourceNode.json
+++ b/api/MediaStreamTrackAudioSourceNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamTrackAudioSourceNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#MediaStreamTrackAudioSourceNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": false,
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
           "description": "<code>MediaStreamTrackAudioSourceNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaStreamTrackAudioSourceNode/MediaStreamTrackAudioSourceNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-mediastreamtrackaudiosourcenode-mediastreamtrackaudiosourcenode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamTrackEvent.json b/api/MediaStreamTrackEvent.json
index 2cc45af566e522..ee13d3785d552d 100644
--- a/api/MediaStreamTrackEvent.json
+++ b/api/MediaStreamTrackEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MediaStreamTrackGenerator.json b/api/MediaStreamTrackGenerator.json
index bc853e598e367c..6926a26a436e36 100644
--- a/api/MediaStreamTrackGenerator.json
+++ b/api/MediaStreamTrackGenerator.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MediaStreamTrackProcessor.json b/api/MediaStreamTrackProcessor.json
index 9b72b0eb5384de..b15e0108deff30 100644
--- a/api/MediaStreamTrackProcessor.json
+++ b/api/MediaStreamTrackProcessor.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MerchantValidationEvent.json b/api/MerchantValidationEvent.json
index 74d6f1248c92d3..7b3d40d3d45587 100644
--- a/api/MerchantValidationEvent.json
+++ b/api/MerchantValidationEvent.json
@@ -32,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,7 +201,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MessageChannel.json b/api/MessageChannel.json
index 4f7391a8a36a9c..da3b806bdda349 100644
--- a/api/MessageChannel.json
+++ b/api/MessageChannel.json
@@ -45,7 +45,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -99,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MessageEvent.json b/api/MessageEvent.json
index fef62fb07e6373..7a6818bcdd5af8 100644
--- a/api/MessageEvent.json
+++ b/api/MessageEvent.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -85,7 +86,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +135,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +183,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +232,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -276,7 +281,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -324,7 +330,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +379,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MessagePort.json b/api/MessagePort.json
index f52840c7854f28..e7951e46218d07 100644
--- a/api/MessagePort.json
+++ b/api/MessagePort.json
@@ -44,7 +44,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -92,7 +93,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +209,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -324,7 +329,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -370,7 +376,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Metadata.json b/api/Metadata.json
index 08b7e9ab7ed239..78fd440584614f 100644
--- a/api/Metadata.json
+++ b/api/Metadata.json
@@ -30,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/MimeType.json b/api/MimeType.json
index 9b8a5464ebdc8e..c87547db478343 100644
--- a/api/MimeType.json
+++ b/api/MimeType.json
@@ -34,7 +34,8 @@
             "version_removed": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_removed": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
               "version_removed": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
               "version_removed": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
               "version_removed": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MimeTypeArray.json b/api/MimeTypeArray.json
index 8d2b9c06cb1d9b..7d48a783b260cd 100644
--- a/api/MimeTypeArray.json
+++ b/api/MimeTypeArray.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before version 59, method parameters were optional"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before version 59, method parameters were optional"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MouseEvent.json b/api/MouseEvent.json
index dee9b89bcc8e11..ee3f5db36afe1e 100644
--- a/api/MouseEvent.json
+++ b/api/MouseEvent.json
@@ -8,6 +8,9 @@
           "https://drafts.csswg.org/cssom-view/#extensions-to-the-mouseevent-interface",
           "https://w3c.github.io/pointerlock/#extensions-to-the-mouseevent-interface"
         ],
+        "tags": [
+          "web-features:mouse-events"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -35,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
           "description": "<code>MouseEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/MouseEvent",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-mouseevent",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "26"
@@ -71,7 +78,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,6 +92,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/altKey",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-altkey",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -113,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,6 +138,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/button",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-button",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -155,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,6 +184,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/buttons",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-buttons",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "43"
@@ -194,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,6 +227,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/clientX",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-clientx",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -236,7 +259,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,6 +273,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/clientY",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-clienty",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -278,7 +305,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,6 +319,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/ctrlKey",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-ctrlkey",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -320,7 +351,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -333,6 +365,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/getModifierState",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-getmodifierstate",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -356,7 +391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -388,7 +424,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -431,7 +468,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,7 +540,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -514,6 +554,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/metaKey",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-metakey",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -543,7 +586,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -557,7 +601,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/movementX",
           "spec_url": "https://w3c.github.io/pointerlock/#dom-mouseevent-movementx",
           "tags": [
-            "web-features:pointer-lock"
+            "web-features:pointer-lock",
+            "web-features:mouse-events"
           ],
           "support": {
             "chrome": [
@@ -621,7 +666,8 @@
                 "version_removed": "3.0"
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -635,7 +681,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/movementY",
           "spec_url": "https://w3c.github.io/pointerlock/#dom-mouseevent-movementy",
           "tags": [
-            "web-features:pointer-lock"
+            "web-features:pointer-lock",
+            "web-features:mouse-events"
           ],
           "support": {
             "chrome": [
@@ -699,7 +746,8 @@
                 "version_removed": "3.0"
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -712,6 +760,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/offsetX",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-offsetx",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -743,7 +794,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -756,6 +808,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/offsetY",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-offsety",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -787,7 +842,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -800,6 +856,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/pageX",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-pagex",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -829,7 +888,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -842,6 +902,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/pageY",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-pagey",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -871,7 +934,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -884,6 +948,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/relatedTarget",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-relatedtarget",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -913,7 +980,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -926,6 +994,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/screenX",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-screenx",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -955,7 +1026,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -968,6 +1040,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/screenY",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-screeny",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -997,7 +1072,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1010,6 +1086,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/shiftKey",
           "spec_url": "https://w3c.github.io/uievents/#dom-mouseevent-shiftkey",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1039,7 +1118,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1052,6 +1132,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/x",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-x",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1081,7 +1164,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1094,6 +1178,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MouseEvent/y",
           "spec_url": "https://drafts.csswg.org/cssom-view/#dom-mouseevent-y",
+          "tags": [
+            "web-features:mouse-events"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1123,7 +1210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MouseScrollEvent.json b/api/MouseScrollEvent.json
index f414f5f9a2366c..c036e9b399d0d4 100644
--- a/api/MouseScrollEvent.json
+++ b/api/MouseScrollEvent.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/MutationEvent.json b/api/MutationEvent.json
index 6f0aad681fa8e6..5a9a50ba8b8d1e 100644
--- a/api/MutationEvent.json
+++ b/api/MutationEvent.json
@@ -11,7 +11,8 @@
           },
           "chrome_android": "mirror",
           "edge": {
-            "version_added": "12"
+            "version_added": "12",
+            "version_removed": "127"
           },
           "firefox": {
             "version_added": "1"
@@ -32,7 +33,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -51,7 +53,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -72,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +96,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -113,7 +118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +139,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -154,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +182,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -195,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +225,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -236,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +268,8 @@
             },
             "chrome_android": "mirror",
             "edge": {
-              "version_added": "12"
+              "version_added": "12",
+              "version_removed": "127"
             },
             "firefox": {
               "version_added": "1"
@@ -277,7 +290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MutationObserver.json b/api/MutationObserver.json
index 8f13a651116ffb..53271c8c742cb4 100644
--- a/api/MutationObserver.json
+++ b/api/MutationObserver.json
@@ -51,7 +51,8 @@
               "prefix": "WebKit",
               "version_added": "≤37"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -111,7 +112,8 @@
                 "prefix": "WebKit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +197,8 @@
             "webview_android": {
               "version_added": "4.4",
               "notes": "Before WebView 4.4.3, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then WebView throws a syntax error."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/MutationRecord.json b/api/MutationRecord.json
index 9e2a55d232956e..08f66ab7aa012c 100644
--- a/api/MutationRecord.json
+++ b/api/MutationRecord.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +322,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +359,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NDEFMessage.json b/api/NDEFMessage.json
index 64b58fb10f4c25..68d70494ec408e 100644
--- a/api/NDEFMessage.json
+++ b/api/NDEFMessage.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NDEFReader.json b/api/NDEFReader.json
index aa5de1ea81e87b..02bc2bd8f86c14 100644
--- a/api/NDEFReader.json
+++ b/api/NDEFReader.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -182,7 +186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -222,7 +227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -261,7 +267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -300,7 +307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NDEFReadingEvent.json b/api/NDEFReadingEvent.json
index 1af8e3298f078e..7c1636074c24bd 100644
--- a/api/NDEFReadingEvent.json
+++ b/api/NDEFReadingEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NDEFRecord.json b/api/NDEFRecord.json
index a21963c5205771..03e45fd0ef1434 100644
--- a/api/NDEFRecord.json
+++ b/api/NDEFRecord.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -224,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -263,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -302,7 +309,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -341,7 +349,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -380,7 +389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NamedNodeMap.json b/api/NamedNodeMap.json
index 3685112894ce5a..0d23bed4cd30cf 100644
--- a/api/NamedNodeMap.json
+++ b/api/NamedNodeMap.json
@@ -42,7 +42,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -321,7 +328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NavigateEvent.json b/api/NavigateEvent.json
index a381fefa93c67e..b93815a35f5be9 100644
--- a/api/NavigateEvent.json
+++ b/api/NavigateEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigateevent-interface",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
           "description": "<code>NavigateEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/NavigateEvent",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigateevent-interface",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -60,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -94,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,6 +150,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/destination",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-destination-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -161,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -174,6 +188,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/downloadRequest",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-downloadrequest-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -195,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,6 +226,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/formData",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-formdata-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -229,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -242,6 +264,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/hashChange",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-hashchange-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -263,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,7 +322,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -309,6 +336,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/info",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-info-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -330,7 +360,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -364,7 +395,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -377,6 +409,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/navigationType",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-navigationtype-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -398,7 +433,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -433,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -467,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -480,6 +518,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/signal",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-signal-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -501,7 +542,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -536,7 +578,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -549,6 +592,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigateEvent/userInitiated",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigateevent-userinitiated-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -570,7 +616,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Navigation.json b/api/Navigation.json
index 0f3ae9267612b1..bc48dd35d53daa 100644
--- a/api/Navigation.json
+++ b/api/Navigation.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#navigation-interface",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/back",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-back-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -97,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -110,6 +119,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/canGoBack",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-cangoback-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -132,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,6 +158,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/canGoForward",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-cangoforward-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -167,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -180,6 +197,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/currentEntry",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-currententry-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -202,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -216,6 +237,9 @@
           "description": "<code>currententrychange</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/currententrychange_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-currententrychange",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -238,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -251,6 +276,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/entries",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-entries-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -273,7 +301,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -286,6 +315,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/forward",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-forward-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -308,7 +340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -321,6 +354,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/navigate",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-navigate-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -343,7 +379,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -357,6 +394,9 @@
           "description": "<code>navigate</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/navigate_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-navigate",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -379,7 +419,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -393,6 +434,9 @@
           "description": "<code>navigateerror</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/navigateerror_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-navigateerror",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -415,7 +459,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -429,6 +474,9 @@
           "description": "<code>navigatesuccess</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/navigatesuccess_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-navigatesuccess",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -451,7 +499,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -464,6 +513,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/reload",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-reload-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -486,7 +538,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -499,6 +552,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/transition",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-transition-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -521,7 +577,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -534,6 +591,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/traverseTo",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-traverseto-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -556,7 +616,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -569,6 +630,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigation/updateCurrentEntry",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation-updatecurrententry-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -591,7 +655,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigationActivation.json b/api/NavigationActivation.json
index 735d97bb9846cd..11ff7e201cb01a 100644
--- a/api/NavigationActivation.json
+++ b/api/NavigationActivation.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigationCurrentEntryChangeEvent.json b/api/NavigationCurrentEntryChangeEvent.json
index 9f2f2f8cef7f12..d78aad497bbef3 100644
--- a/api/NavigationCurrentEntryChangeEvent.json
+++ b/api/NavigationCurrentEntryChangeEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationCurrentEntryChangeEvent",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationcurrententrychangeevent-interface",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
           "description": "<code>NavigationCurrentEntryChangeEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationCurrentEntryChangeEvent/NavigationCurrentEntryChangeEvent",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationcurrententrychangeevent-interface",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationCurrentEntryChangeEvent/from",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationcurrententrychangeevent-from-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -96,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,6 +121,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationCurrentEntryChangeEvent/navigationType",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationcurrententrychangeevent-navigationtype-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -131,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigationDestination.json b/api/NavigationDestination.json
index c2d33fa31b06d6..842b9b62dab65e 100644
--- a/api/NavigationDestination.json
+++ b/api/NavigationDestination.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,6 +42,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/getState",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-getstate-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -60,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -73,6 +81,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/id",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-id-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -95,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,6 +120,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/index",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-index-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -130,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -143,6 +159,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/key",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-key-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -165,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -178,6 +198,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/sameDocument",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-samedocument-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -200,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -213,6 +237,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationDestination/url",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationdestination-interface:dom-navigationdestination-url-2",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -235,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigationHistoryEntry.json b/api/NavigationHistoryEntry.json
index e822b9970b9467..eff31f688fdd6f 100644
--- a/api/NavigationHistoryEntry.json
+++ b/api/NavigationHistoryEntry.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-navigationhistoryentry-interface",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
           "description": "<code>dispose</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/dispose_event",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#handler-navigationhistoryentry-ondispose",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/getState",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-getstate-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -96,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,6 +121,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/id",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-id-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -131,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,6 +160,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/index",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-index-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -166,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,6 +199,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/key",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-key-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -201,7 +224,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -214,6 +238,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/sameDocument",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-samedocument-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -236,7 +263,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,6 +277,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationHistoryEntry/url",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationhistoryentry-url-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -271,7 +302,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigationPreloadManager.json b/api/NavigationPreloadManager.json
index 6fd73de0ecb65e..fd7f7030e10c07 100644
--- a/api/NavigationPreloadManager.json
+++ b/api/NavigationPreloadManager.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NavigationTransition.json b/api/NavigationTransition.json
index 366728a99ca2f8..ec5c8e99e0090c 100644
--- a/api/NavigationTransition.json
+++ b/api/NavigationTransition.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationTransition",
         "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#navigationtransition",
+        "tags": [
+          "web-features:navigation"
+        ],
         "support": {
           "chrome": {
             "version_added": "102"
@@ -26,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,6 +42,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationTransition/finished",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationtransition-finished-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -60,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -73,6 +81,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationTransition/from",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationtransition-from-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -95,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,6 +120,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationTransition/navigationType",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationtransition-navigationtype-dev",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -130,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Navigator.json b/api/Navigator.json
index 90b6bc64943a92..ca6356efb74569 100644
--- a/api/Navigator.json
+++ b/api/Navigator.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -98,7 +99,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +261,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -330,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -384,7 +392,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/1100993"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -418,7 +427,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,7 +487,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +529,8 @@
               },
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -560,7 +572,8 @@
               },
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -605,7 +618,11 @@
               "notes": "Badging is supported for web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Badging is supported for web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": false,
@@ -642,7 +659,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -687,7 +705,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -700,6 +719,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/contacts",
           "spec_url": "https://w3c.github.io/contact-picker/#dom-navigator-contacts",
+          "tags": [
+            "web-features:contact-picker"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -737,7 +759,8 @@
               "partial_implementation": true,
               "notes": "This API was exposed but failed upon opening a contact selector."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -774,12 +797,21 @@
             "opera_android": {
               "version_added": "≤12.1"
             },
-            "safari": {
-              "version_added": "1"
-            },
+            "safari": [
+              {
+                "version_added": "18"
+              },
+              {
+                "version_added": "1",
+                "version_removed": "18",
+                "partial_implementation": true,
+                "notes": "Returns <code>true</code> even if the browser is set to block cookies if <code>navigator.cookieEnabled</code> is invoked inside a third-party <code>iframe</code>)"
+              }
+            ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -792,6 +824,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/credentials",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#framework-credential-management",
+          "tags": [
+            "web-features:credential-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -815,7 +850,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -849,7 +885,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -883,7 +920,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -921,7 +959,8 @@
             "samsunginternet_android": {
               "version_added": "16.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -969,7 +1008,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -982,6 +1022,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/geolocation",
           "spec_url": "https://w3c.github.io/geolocation/#dom-navigator-geolocation",
+          "tags": [
+            "web-features:geolocation"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -1013,7 +1056,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1024,6 +1068,9 @@
         "secure_context_required": {
           "__compat": {
             "description": "Secure context required",
+            "tags": [
+              "web-features:geolocation"
+            ],
             "support": {
               "chrome": {
                 "version_added": "47"
@@ -1045,7 +1092,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1080,7 +1128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1115,7 +1164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1149,7 +1199,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1202,7 +1253,8 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1243,7 +1295,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1301,7 +1354,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1386,7 +1440,8 @@
                 "prefix": "webkit",
                 "version_added": "40"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1453,7 +1508,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1489,7 +1545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1548,7 +1605,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1588,7 +1646,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1627,7 +1686,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1663,7 +1723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1703,7 +1764,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1716,6 +1778,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/keyboard",
           "spec_url": "https://wicg.github.io/keyboard-lock/#h-navigator-keyboard",
+          "tags": [
+            "web-features:keyboard-lock"
+          ],
           "support": {
             "chrome": {
               "version_added": "68"
@@ -1737,7 +1802,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1784,7 +1850,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1835,7 +1902,8 @@
             "webview_android": {
               "version_added": "37",
               "notes": "Before version 65, <code>navigator.languages[0]</code> is not guaranteed to equal <code>navigator.language</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1872,7 +1940,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1884,7 +1953,7 @@
       "login": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/login",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-navigator-login",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-navigator-login",
           "support": {
             "chrome": {
               "version_added": "120"
@@ -1908,7 +1977,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1941,7 +2011,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1985,7 +2056,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2023,7 +2095,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2059,7 +2132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2097,7 +2171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2139,7 +2214,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2179,7 +2255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2224,7 +2301,8 @@
               "samsunginternet_android": {
                 "version_added": "1.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2274,7 +2352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2327,7 +2406,8 @@
               "version_added": "≤37",
               "partial_implementation": true,
               "notes": "Can incorrectly return true, see <a href='https://crbug.com/811122'>bug 811122</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2362,7 +2442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2396,7 +2477,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2436,7 +2518,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/490120"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2482,7 +2565,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2522,7 +2606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2567,7 +2652,8 @@
               "samsunginternet_android": {
                 "version_added": "1.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2581,6 +2667,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/presentation",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-navigator-presentation",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -2605,7 +2694,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/521319"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2641,7 +2731,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2680,7 +2771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2721,7 +2813,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2759,7 +2852,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2794,7 +2888,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2829,7 +2924,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2864,7 +2960,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2899,7 +2996,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2934,7 +3032,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -2969,7 +3068,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3002,7 +3102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3035,7 +3136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3070,7 +3172,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3105,7 +3208,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3140,7 +3244,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3175,7 +3280,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3210,7 +3316,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3247,7 +3354,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3282,7 +3390,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3317,7 +3426,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3354,7 +3464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3389,7 +3500,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3426,7 +3538,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3463,7 +3576,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3500,7 +3614,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3535,7 +3650,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3568,7 +3684,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3603,7 +3720,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3640,7 +3758,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3675,7 +3794,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3710,7 +3830,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3745,7 +3866,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3782,7 +3904,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3819,7 +3942,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3856,7 +3980,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3891,7 +4016,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3926,7 +4052,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3984,7 +4111,8 @@
                 "The spec requires that the passed <code>supportedConfigurations</code> option contain at least one of <code>audioCapabilities</code> or <code>videoCapabilities</code>, and that said parameters include a codec string.",
                 "The function does not exist in insecure contexts. This was not enforced until version 58."
               ]
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4025,7 +4153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4059,7 +4188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4096,7 +4226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4139,7 +4270,8 @@
             "webview_android": {
               "version_added": "40",
               "notes": "Starting in Chrome 59, this method cannot send a <code>Blob</code> whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see <a href='https://crbug.com/720283'>bug 720283</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4175,7 +4307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4212,7 +4345,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -4256,7 +4392,11 @@
               "notes": "Badging is supported for web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Badging is supported for web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": false,
@@ -4317,7 +4457,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4358,7 +4499,8 @@
               },
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4402,7 +4544,8 @@
               },
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4437,7 +4580,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4473,7 +4617,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4513,7 +4658,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4557,7 +4703,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4597,7 +4744,8 @@
             "webview_android": {
               "version_added": false,
               "notes": "WebView exposes <code>navigator.usb</code>, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4634,7 +4782,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4677,7 +4826,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4714,7 +4864,8 @@
             "webview_android": {
               "version_added": "119",
               "impl_url": "https://crbug.com/921655"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4748,7 +4899,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "119"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -4785,7 +4937,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4823,7 +4976,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4907,7 +5061,8 @@
                 "Beginning in version 55, this is not supported in cross-origin iframes.",
                 "Beginning in version 60, this method requires a user gesture. Otherwise it returns <code>false</code>."
               ]
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4941,7 +5096,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4982,7 +5138,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4995,6 +5152,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Navigator/webdriver",
           "spec_url": "https://w3c.github.io/webdriver/#dfn-webdriver",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "63"
@@ -5018,7 +5178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5054,7 +5215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5092,7 +5254,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigatorLogin.json b/api/NavigatorLogin.json
index f8726d04e2c291..6d847a61f5c6c4 100644
--- a/api/NavigatorLogin.json
+++ b/api/NavigatorLogin.json
@@ -3,7 +3,7 @@
     "NavigatorLogin": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigatorLogin",
-        "spec_url": "https://fedidcg.github.io/FedCM/#navigatorlogin",
+        "spec_url": "https://w3c-fedid.github.io/FedCM/#navigatorlogin",
         "support": {
           "chrome": {
             "version_added": "120"
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,7 +39,7 @@
       "setStatus": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigatorLogin/setStatus",
-          "spec_url": "https://fedidcg.github.io/FedCM/#dom-navigatorlogin-setstatus",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#dom-navigatorlogin-setstatus",
           "support": {
             "chrome": {
               "version_added": "120"
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigatorManagedData.json b/api/NavigatorManagedData.json
index e80c72128eaf92..946ccec8cb4d8b 100644
--- a/api/NavigatorManagedData.json
+++ b/api/NavigatorManagedData.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -56,7 +57,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NavigatorUAData.json b/api/NavigatorUAData.json
index 6930a02401f3a0..e375bf8e93fe6f 100644
--- a/api/NavigatorUAData.json
+++ b/api/NavigatorUAData.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/921655"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -143,7 +146,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -181,7 +185,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -219,7 +224,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NetworkInformation.json b/api/NetworkInformation.json
index 60a1393ce5c308..b38291309239b8 100644
--- a/api/NetworkInformation.json
+++ b/api/NetworkInformation.json
@@ -34,7 +34,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "50"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             "webview_android": {
               "version_added": "50",
               "notes": "The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -246,7 +251,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +293,8 @@
             "webview_android": {
               "version_added": "50",
               "notes": "The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -321,7 +328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -370,7 +378,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -412,7 +421,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Node.json b/api/Node.json
index b63bac612ed841..597523957c1db4 100644
--- a/api/Node.json
+++ b/api/Node.json
@@ -37,7 +37,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +246,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +330,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +368,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -400,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -440,7 +450,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -479,7 +490,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -521,7 +533,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -563,7 +576,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -611,7 +625,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -653,7 +668,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -695,7 +711,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -737,7 +754,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -777,7 +795,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -817,7 +836,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -857,7 +877,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -897,7 +918,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -937,7 +959,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -984,7 +1007,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1027,7 +1051,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1067,7 +1092,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1107,7 +1133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1147,7 +1174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1187,7 +1215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1229,7 +1258,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1271,7 +1301,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NodeIterator.json b/api/NodeIterator.json
index 18631fec59b8cc..0f0fba5a490b9b 100644
--- a/api/NodeIterator.json
+++ b/api/NodeIterator.json
@@ -33,7 +33,8 @@
             "version_added": "3"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -243,7 +248,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +291,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -327,7 +334,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -369,7 +377,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NodeList.json b/api/NodeList.json
index ac40b84c6b21bb..99020275e79bfa 100644
--- a/api/NodeList.json
+++ b/api/NodeList.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -251,7 +257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -285,7 +292,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/NotRestoredReasonDetails.json b/api/NotRestoredReasonDetails.json
index 113c262947eefd..f3ded64d1ae6ac 100644
--- a/api/NotRestoredReasonDetails.json
+++ b/api/NotRestoredReasonDetails.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -91,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NotRestoredReasons.json b/api/NotRestoredReasons.json
index 2e61141f043eef..b04f7567bfb7de 100644
--- a/api/NotRestoredReasons.json
+++ b/api/NotRestoredReasons.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -227,7 +233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -261,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Notification.json b/api/Notification.json
index d2c50ae4ce40c2..2e5b4fb8e82183 100644
--- a/api/Notification.json
+++ b/api/Notification.json
@@ -70,6 +70,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/551446"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -119,7 +123,10 @@
               "notes": "Notifications are supported in web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -154,7 +161,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -191,7 +199,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -231,7 +240,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -275,6 +285,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -320,6 +333,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -365,7 +381,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -410,6 +427,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -455,7 +475,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -496,6 +517,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -541,6 +565,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -586,7 +613,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -631,6 +659,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -669,7 +700,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -714,6 +746,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -753,7 +788,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -799,6 +835,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -835,7 +874,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -899,6 +939,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -906,6 +949,46 @@
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "returns_promise": {
+          "__compat": {
+            "description": "Returns a <code>Promise</code>",
+            "support": {
+              "chrome": {
+                "version_added": "47"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "46"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "15"
+              },
+              "safari_ios": {
+                "version_added": "16.4"
+              },
+              "samsunginternet_android": "mirror",
+              "webview_android": {
+                "version_added": false
+              },
+              "webview_ios": {
+                "version_added": false
+              }
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       },
       "requireInteraction": {
@@ -951,7 +1034,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -996,7 +1080,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1034,6 +1119,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -1079,7 +1167,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1117,7 +1206,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1162,6 +1252,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -1201,7 +1294,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/NotificationEvent.json b/api/NotificationEvent.json
index f45d2aad1c38f5..34593bfc7fe7c0 100644
--- a/api/NotificationEvent.json
+++ b/api/NotificationEvent.json
@@ -38,6 +38,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/551446"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -84,6 +88,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -126,7 +134,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +177,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OES_draw_buffers_indexed.json b/api/OES_draw_buffers_indexed.json
index 8ab9da994a6a9e..551eec1fb65faa 100644
--- a/api/OES_draw_buffers_indexed.json
+++ b/api/OES_draw_buffers_indexed.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OES_element_index_uint.json b/api/OES_element_index_uint.json
index cd599c2b07ebc3..4d91720e14e6f5 100644
--- a/api/OES_element_index_uint.json
+++ b/api/OES_element_index_uint.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_fbo_render_mipmap.json b/api/OES_fbo_render_mipmap.json
index 8fbfc1acf0a05a..4374ddbf9f8bbf 100644
--- a/api/OES_fbo_render_mipmap.json
+++ b/api/OES_fbo_render_mipmap.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_standard_derivatives.json b/api/OES_standard_derivatives.json
index 38fe454c55e43c..2938b1a9429f9b 100644
--- a/api/OES_standard_derivatives.json
+++ b/api/OES_standard_derivatives.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_texture_float.json b/api/OES_texture_float.json
index 07ad873562f26e..a347a77df12c60 100644
--- a/api/OES_texture_float.json
+++ b/api/OES_texture_float.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_texture_float_linear.json b/api/OES_texture_float_linear.json
index d96f4d9d1a2482..f30815a1319ce5 100644
--- a/api/OES_texture_float_linear.json
+++ b/api/OES_texture_float_linear.json
@@ -30,7 +30,11 @@
             "notes": "Only supported on iPadOS."
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Only supported on iPadOS."
+          }
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_texture_half_float.json b/api/OES_texture_half_float.json
index 1b1aff3902946d..1e2e025b5da024 100644
--- a/api/OES_texture_half_float.json
+++ b/api/OES_texture_half_float.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_texture_half_float_linear.json b/api/OES_texture_half_float_linear.json
index 734d24d6d668c6..47f33935cf0c33 100644
--- a/api/OES_texture_half_float_linear.json
+++ b/api/OES_texture_half_float_linear.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": {
             "version_added": "1.5"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/OES_vertex_array_object.json b/api/OES_vertex_array_object.json
index 9e3aab7e9f4213..08aac2550e0b00 100644
--- a/api/OES_vertex_array_object.json
+++ b/api/OES_vertex_array_object.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OTPCredential.json b/api/OTPCredential.json
index 79346aaf533bf6..238fa687e1dba5 100644
--- a/api/OTPCredential.json
+++ b/api/OTPCredential.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/OTPCredential",
         "spec_url": "https://wicg.github.io/web-otp/#OTPCredential",
+        "tags": [
+          "web-features:web-otp"
+        ],
         "support": {
           "chrome": {
             "version_added": "93"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -41,6 +45,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OTPCredential/code",
           "spec_url": "https://wicg.github.io/web-otp/#dom-otpcredential-code",
+          "tags": [
+            "web-features:web-otp"
+          ],
           "support": {
             "chrome": {
               "version_added": "93"
@@ -66,7 +73,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/OVR_multiview2.json b/api/OVR_multiview2.json
index 234dd68346c766..9e8b5802f85d55 100644
--- a/api/OVR_multiview2.json
+++ b/api/OVR_multiview2.json
@@ -33,7 +33,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OfflineAudioCompletionEvent.json b/api/OfflineAudioCompletionEvent.json
index bbd8b725b60f3c..9968bb47e1e13e 100644
--- a/api/OfflineAudioCompletionEvent.json
+++ b/api/OfflineAudioCompletionEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioCompletionEvent",
         "spec_url": "https://webaudio.github.io/web-audio-api/#OfflineAudioCompletionEvent",
+        "tags": [
+          "web-features:offline-audio-context"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>OfflineAudioCompletionEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioCompletionEvent/OfflineAudioCompletionEvent",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocompletionevent-offlineaudiocompletionevent",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioCompletionEvent/renderedBuffer",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocompletionevent-renderedbuffer",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OfflineAudioContext.json b/api/OfflineAudioContext.json
index a767437d7dabb0..90f50434dffa6a 100644
--- a/api/OfflineAudioContext.json
+++ b/api/OfflineAudioContext.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext",
         "spec_url": "https://webaudio.github.io/web-audio-api/#OfflineAudioContext",
+        "tags": [
+          "web-features:offline-audio-context"
+        ],
         "support": {
           "chrome": [
             {
@@ -41,7 +44,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,6 +58,9 @@
           "description": "<code>OfflineAudioContext()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext/OfflineAudioContext",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-offlineaudiocontext",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": [
               {
@@ -91,7 +98,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,6 +152,9 @@
             "https://webaudio.github.io/web-audio-api/#OfflineAudioCompletionEvent",
             "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-oncomplete"
           ],
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "25"
@@ -166,7 +178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -179,6 +192,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext/length",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-length",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -202,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,6 +232,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext/resume",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-resume",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -240,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,6 +274,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext/startRendering",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-startrendering",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "25"
@@ -276,7 +300,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +335,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -324,6 +350,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OfflineAudioContext/suspend",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-offlineaudiocontext-suspend",
+          "tags": [
+            "web-features:offline-audio-context"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -348,7 +377,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OffscreenCanvas.json b/api/OffscreenCanvas.json
index c085e068a06f23..708434f783d6b9 100644
--- a/api/OffscreenCanvas.json
+++ b/api/OffscreenCanvas.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -273,6 +280,9 @@
         "bitmaprenderer_context": {
           "__compat": {
             "description": "<code>bitmaprenderer</code> context",
+            "tags": [
+              "web-features:offscreen-canvas"
+            ],
             "support": {
               "chrome": {
                 "version_added": "76"
@@ -296,7 +306,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -331,7 +342,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -366,7 +378,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -410,7 +423,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -422,6 +436,9 @@
         "2d_context": {
           "__compat": {
             "description": "<code>2d</code> context",
+            "tags": [
+              "web-features:offscreen-canvas"
+            ],
             "support": {
               "chrome": {
                 "version_added": "69"
@@ -445,7 +462,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -483,7 +501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -520,7 +539,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -557,7 +577,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OffscreenCanvasRenderingContext2D.json b/api/OffscreenCanvasRenderingContext2D.json
index 50cb242b6fcc2f..a6bb99ea49754f 100644
--- a/api/OffscreenCanvasRenderingContext2D.json
+++ b/api/OffscreenCanvasRenderingContext2D.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -361,7 +370,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -435,7 +446,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -472,7 +484,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -509,7 +522,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -546,7 +560,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -583,7 +598,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -620,7 +636,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -657,7 +674,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -694,7 +712,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -731,7 +750,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -768,7 +788,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -805,7 +826,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -839,7 +861,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -876,7 +899,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -910,7 +934,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -944,7 +969,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -978,7 +1004,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1015,7 +1042,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1052,7 +1080,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1089,7 +1118,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1126,7 +1156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1163,7 +1194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1200,7 +1232,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1234,7 +1267,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1271,7 +1305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1308,7 +1343,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1345,7 +1381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1379,7 +1416,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1416,7 +1454,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1453,7 +1492,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1490,7 +1530,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1527,7 +1568,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1564,7 +1606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1601,7 +1644,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1638,7 +1682,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1675,7 +1720,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1712,7 +1758,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1749,7 +1796,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1786,7 +1834,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1823,7 +1872,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1860,7 +1910,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1897,7 +1948,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1934,7 +1986,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1971,7 +2024,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2008,7 +2062,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2045,7 +2100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2082,7 +2138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2119,7 +2176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2156,7 +2214,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2193,7 +2252,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2230,7 +2290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2267,7 +2328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2304,7 +2366,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2341,7 +2404,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2378,7 +2442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2415,7 +2480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2452,7 +2518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2489,7 +2556,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2523,7 +2591,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2560,7 +2629,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2597,7 +2667,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2631,7 +2702,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OrientationSensor.json b/api/OrientationSensor.json
index 055820f88e8517..1503baf3cc269d 100644
--- a/api/OrientationSensor.json
+++ b/api/OrientationSensor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/OrientationSensor",
         "spec_url": "https://w3c.github.io/orientation-sensor/#orientationsensor-interface",
+        "tags": [
+          "web-features:orientation-sensor"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -37,6 +41,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OrientationSensor/populateMatrix",
           "spec_url": "https://w3c.github.io/orientation-sensor/#orientationsensor-populatematrix",
+          "tags": [
+            "web-features:orientation-sensor"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -58,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,6 +79,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OrientationSensor/quaternion",
           "spec_url": "https://w3c.github.io/orientation-sensor/#orientationsensor-quaternion",
+          "tags": [
+            "web-features:orientation-sensor"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -92,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OscillatorNode.json b/api/OscillatorNode.json
index 72b1a77aa6ad7f..d86cb2d3622688 100644
--- a/api/OscillatorNode.json
+++ b/api/OscillatorNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#OscillatorNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "20"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
           "description": "<code>OscillatorNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/OscillatorNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-oscillatornode-oscillatornode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/detune",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-oscillatornode-detune",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -97,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,6 +122,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/frequency",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-oscillatornode-frequency",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -133,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,6 +162,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/setPeriodicWave",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-oscillatornode-setperiodicwave",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "30"
@@ -171,7 +190,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,6 +204,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/type",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-oscillatornode-type",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "20"
@@ -207,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/OverconstrainedError.json b/api/OverconstrainedError.json
index a3b88f3dc97145..33214d0d000240 100644
--- a/api/OverconstrainedError.json
+++ b/api/OverconstrainedError.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PageRevealEvent.json b/api/PageRevealEvent.json
index 32da7f1e9fcd6e..6ae46986e9dd57 100644
--- a/api/PageRevealEvent.json
+++ b/api/PageRevealEvent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PageSwapEvent.json b/api/PageSwapEvent.json
index 5b6aac6cbf711b..f228f2ccf902cb 100644
--- a/api/PageSwapEvent.json
+++ b/api/PageSwapEvent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -97,7 +99,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PageTransitionEvent.json b/api/PageTransitionEvent.json
index 5075012269f26e..be730ee232df9d 100644
--- a/api/PageTransitionEvent.json
+++ b/api/PageTransitionEvent.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaintRenderingContext2D.json b/api/PaintRenderingContext2D.json
index 0b65b099cc6b7d..2e0d4c028dc641 100644
--- a/api/PaintRenderingContext2D.json
+++ b/api/PaintRenderingContext2D.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,7 +233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -363,7 +373,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -431,7 +443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -465,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -499,7 +513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -533,7 +548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -567,7 +583,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -601,7 +618,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -635,7 +653,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -669,7 +688,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -703,7 +723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -737,7 +758,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -771,7 +793,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -805,7 +828,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -839,7 +863,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -873,7 +898,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -907,7 +933,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -941,7 +968,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -975,7 +1003,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1009,7 +1038,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1043,7 +1073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1077,7 +1108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1111,7 +1143,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1145,7 +1178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1179,7 +1213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1213,7 +1248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1247,7 +1283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1281,7 +1318,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1315,7 +1353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1349,7 +1388,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1383,7 +1423,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaintSize.json b/api/PaintSize.json
index 5cc6be48f15cb6..dc3393ec526762 100644
--- a/api/PaintSize.json
+++ b/api/PaintSize.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -56,7 +57,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -89,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaintWorkletGlobalScope.json b/api/PaintWorkletGlobalScope.json
index 032022e9e99b5f..0000c424b423e6 100644
--- a/api/PaintWorkletGlobalScope.json
+++ b/api/PaintWorkletGlobalScope.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PannerNode.json b/api/PannerNode.json
index e75f35b7bde244..db01f83ab8eb28 100644
--- a/api/PannerNode.json
+++ b/api/PannerNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#PannerNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "14"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>PannerNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/PannerNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-pannernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/coneInnerAngle",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-coneinnerangle",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/coneOuterAngle",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-coneouterangle",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/coneOuterGain",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-coneoutergain",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -177,7 +196,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,6 +210,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/distanceModel",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-distancemodel",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -215,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,6 +252,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/maxDistance",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-maxdistance",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -253,7 +280,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,6 +294,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/orientationX",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-orientationx",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -287,7 +318,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,6 +332,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/orientationY",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-orientationy",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -321,7 +356,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,6 +370,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/orientationZ",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-orientationz",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -355,7 +394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -368,6 +408,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/panningModel",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-panningmodel",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -393,7 +436,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,6 +450,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/positionX",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-positionx",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -427,7 +474,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -440,6 +488,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/positionY",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-positiony",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -461,7 +512,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -474,6 +526,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/positionZ",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-positionz",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -495,7 +550,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -508,6 +564,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/refDistance",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-refdistance",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -533,7 +592,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -546,6 +606,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PannerNode/rolloffFactor",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-pannernode-rollofffactor",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "14"
@@ -571,7 +634,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -609,7 +673,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -647,7 +712,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PasswordCredential.json b/api/PasswordCredential.json
index cbb7db93bac226..3d3ea6f9c433c4 100644
--- a/api/PasswordCredential.json
+++ b/api/PasswordCredential.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PasswordCredential",
         "spec_url": "https://w3c.github.io/webappsec-credential-management/#passwordcredential-interface",
+        "tags": [
+          "web-features:password-credentials"
+        ],
         "support": {
           "chrome": {
             "version_added": "51"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -41,6 +45,9 @@
             "https://w3c.github.io/webappsec-credential-management/#dom-passwordcredential-passwordcredential",
             "https://w3c.github.io/webappsec-credential-management/#dom-passwordcredential-passwordcredential-data"
           ],
+          "tags": [
+            "web-features:password-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PasswordCredential/iconURL",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialuserdata-iconurl",
+          "tags": [
+            "web-features:password-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -96,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,6 +121,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PasswordCredential/name",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-credentialuserdata-name",
+          "tags": [
+            "web-features:password-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -130,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -143,6 +159,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PasswordCredential/password",
           "spec_url": "https://w3c.github.io/webappsec-credential-management/#dom-passwordcredential-password",
+          "tags": [
+            "web-features:password-credentials"
+          ],
           "support": {
             "chrome": {
               "version_added": "60"
@@ -164,7 +183,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Path2D.json b/api/Path2D.json
index 4c085b004fde8b..9232c8460e5b0a 100644
--- a/api/Path2D.json
+++ b/api/Path2D.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -242,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +322,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +359,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -386,7 +396,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -422,7 +433,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -456,7 +468,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentAddress.json b/api/PaymentAddress.json
index 580debe7cb99f7..0572abd9d178fc 100644
--- a/api/PaymentAddress.json
+++ b/api/PaymentAddress.json
@@ -32,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -154,7 +157,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +199,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +241,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -277,7 +283,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -318,7 +325,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -359,7 +367,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -400,7 +409,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,7 +451,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -483,7 +494,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentInstruments.json b/api/PaymentInstruments.json
index cc38f6242a4688..2bab73ada1f858 100644
--- a/api/PaymentInstruments.json
+++ b/api/PaymentInstruments.json
@@ -26,7 +26,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +99,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +136,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentManager.json b/api/PaymentManager.json
index 11a96b0b57777b..9323543e09346f 100644
--- a/api/PaymentManager.json
+++ b/api/PaymentManager.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -97,7 +99,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +136,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PaymentMethodChangeEvent.json b/api/PaymentMethodChangeEvent.json
index 10d6607dc8cc12..8a431838b4ddf0 100644
--- a/api/PaymentMethodChangeEvent.json
+++ b/api/PaymentMethodChangeEvent.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -87,7 +88,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -183,7 +186,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentRequest.json b/api/PaymentRequest.json
index 09a1b89f51f304..26fe83682a237e 100644
--- a/api/PaymentRequest.json
+++ b/api/PaymentRequest.json
@@ -45,7 +45,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -94,7 +95,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +137,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -186,7 +189,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -236,7 +240,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +286,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -322,7 +328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -373,7 +380,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +429,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -470,7 +479,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +528,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -567,7 +578,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -615,7 +627,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -664,7 +677,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentRequestEvent.json b/api/PaymentRequestEvent.json
index e0de4ddc7824c1..39ab2f3c005dae 100644
--- a/api/PaymentRequestEvent.json
+++ b/api/PaymentRequestEvent.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -169,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -205,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -277,7 +284,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -314,7 +322,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -349,7 +358,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -385,7 +395,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -421,7 +432,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -458,7 +470,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -493,7 +506,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -529,7 +543,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -565,7 +580,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PaymentRequestUpdateEvent.json b/api/PaymentRequestUpdateEvent.json
index 4272b482f29684..55885e066bc9bd 100644
--- a/api/PaymentRequestUpdateEvent.json
+++ b/api/PaymentRequestUpdateEvent.json
@@ -43,7 +43,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +140,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PaymentResponse.json b/api/PaymentResponse.json
index fcc5119515b4f3..fa99ed03615fbd 100644
--- a/api/PaymentResponse.json
+++ b/api/PaymentResponse.json
@@ -43,7 +43,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -95,7 +96,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +149,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +202,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,6 +216,7 @@
         "__compat": {
           "description": "<code>payerdetailchange</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/payerdetailchange_event",
+          "spec_url": "https://w3c.github.io/payment-request/#dfn-payerdetailchange",
           "support": {
             "chrome": {
               "version_added": "78"
@@ -251,18 +256,20 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
       "payerEmail": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/payerEmail",
+          "spec_url": "https://w3c.github.io/payment-request/#payeremail-attribute",
           "support": {
             "chrome": {
               "version_added": "60"
@@ -302,18 +309,20 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
       "payerName": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/payerName",
+          "spec_url": "https://w3c.github.io/payment-request/#payername-attribute",
           "support": {
             "chrome": {
               "version_added": "60"
@@ -353,18 +362,20 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
       "payerPhone": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/payerPhone",
+          "spec_url": "https://w3c.github.io/payment-request/#payerphone-attribute",
           "support": {
             "chrome": {
               "version_added": "60"
@@ -404,12 +415,13 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
@@ -456,7 +468,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -512,7 +525,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -524,6 +538,7 @@
       "shippingAddress": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/shippingAddress",
+          "spec_url": "https://w3c.github.io/payment-request/#shippingaddress-attribute",
           "support": {
             "chrome": {
               "version_added": "60"
@@ -563,18 +578,20 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
       "shippingOption": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PaymentResponse/shippingOption",
+          "spec_url": "https://w3c.github.io/payment-request/#shippingoption-attribute",
           "support": {
             "chrome": {
               "version_added": "60"
@@ -614,12 +631,13 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
-            "deprecated": true
+            "standard_track": true,
+            "deprecated": false
           }
         }
       },
@@ -666,7 +684,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Performance.json b/api/Performance.json
index 9321abe5de9ec9..eff2e41a95523a 100644
--- a/api/Performance.json
+++ b/api/Performance.json
@@ -49,7 +49,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -103,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -213,7 +216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -304,7 +309,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -355,7 +361,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,7 +413,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -461,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -499,7 +508,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -538,7 +548,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -594,7 +605,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -632,7 +644,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -671,7 +684,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -712,7 +726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -753,7 +768,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -799,7 +815,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -855,7 +872,8 @@
               "version_added": "9"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -903,7 +921,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -952,7 +971,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -994,7 +1014,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1043,7 +1064,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1085,7 +1107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceElementTiming.json b/api/PerformanceElementTiming.json
index 2a75d9f846b2b1..97ea76f64e08e8 100644
--- a/api/PerformanceElementTiming.json
+++ b/api/PerformanceElementTiming.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -262,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,7 +304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -330,7 +339,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -364,7 +374,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PerformanceEntry.json b/api/PerformanceEntry.json
index 8050bd70d773d0..48f7d73ec7a09d 100644
--- a/api/PerformanceEntry.json
+++ b/api/PerformanceEntry.json
@@ -39,7 +39,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +125,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceEventTiming.json b/api/PerformanceEventTiming.json
index 23a3fcaf0bb34c..c96a4183ff7f96 100644
--- a/api/PerformanceEventTiming.json
+++ b/api/PerformanceEventTiming.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceLongAnimationFrameTiming.json b/api/PerformanceLongAnimationFrameTiming.json
index 9bbec5617d2365..86684cf7714988 100644
--- a/api/PerformanceLongAnimationFrameTiming.json
+++ b/api/PerformanceLongAnimationFrameTiming.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PerformanceLongTaskTiming.json b/api/PerformanceLongTaskTiming.json
index 36ae656e857e10..814ca36aecd82b 100644
--- a/api/PerformanceLongTaskTiming.json
+++ b/api/PerformanceLongTaskTiming.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PerformanceMark.json b/api/PerformanceMark.json
index 0c9bd4d2dae077..fb349c96e9c4ad 100644
--- a/api/PerformanceMark.json
+++ b/api/PerformanceMark.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "79"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +121,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "79"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceMeasure.json b/api/PerformanceMeasure.json
index fb88d2e740332b..8d3bc69c9268d4 100644
--- a/api/PerformanceMeasure.json
+++ b/api/PerformanceMeasure.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceNavigation.json b/api/PerformanceNavigation.json
index 7e001bf4e84cff..eaad075bc991e1 100644
--- a/api/PerformanceNavigation.json
+++ b/api/PerformanceNavigation.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +151,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceNavigationTiming.json b/api/PerformanceNavigationTiming.json
index 10eab3f8bfbd7d..b0e0a67490cabb 100644
--- a/api/PerformanceNavigationTiming.json
+++ b/api/PerformanceNavigationTiming.json
@@ -29,7 +29,8 @@
             "version_added": "15.1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -136,7 +139,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +178,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -288,7 +295,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -326,7 +334,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -398,7 +408,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -436,7 +447,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -474,7 +486,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -512,7 +525,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -550,7 +564,8 @@
               "version_added": "15.1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceObserver.json b/api/PerformanceObserver.json
index 78fe5d03e82cf8..d9d0555c494ec2 100644
--- a/api/PerformanceObserver.json
+++ b/api/PerformanceObserver.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -140,7 +143,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -177,7 +181,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -289,7 +296,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceObserverEntryList.json b/api/PerformanceObserverEntryList.json
index 2b457714c26a59..e5ff96d928b6cf 100644
--- a/api/PerformanceObserverEntryList.json
+++ b/api/PerformanceObserverEntryList.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformancePaintTiming.json b/api/PerformancePaintTiming.json
index f426d3f24b9a09..79ce3cdae937d3 100644
--- a/api/PerformancePaintTiming.json
+++ b/api/PerformancePaintTiming.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceResourceTiming.json b/api/PerformanceResourceTiming.json
index 0b9ec2a491b3b3..7ffd1e9395de3f 100644
--- a/api/PerformanceResourceTiming.json
+++ b/api/PerformanceResourceTiming.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +159,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -229,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -336,7 +344,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +384,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,7 +424,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -453,7 +464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -488,7 +500,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -527,7 +540,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -563,7 +577,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -602,7 +617,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -641,7 +657,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -675,7 +692,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -714,7 +732,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -753,7 +772,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -792,7 +812,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -826,7 +847,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -862,7 +884,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -899,7 +922,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -944,7 +968,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -983,7 +1008,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1023,7 +1049,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceScriptTiming.json b/api/PerformanceScriptTiming.json
index 6b70e13bc05d5f..db8ef619cf4e31 100644
--- a/api/PerformanceScriptTiming.json
+++ b/api/PerformanceScriptTiming.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -323,7 +331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -360,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -397,7 +407,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -434,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PerformanceServerTiming.json b/api/PerformanceServerTiming.json
index f5abc3bbf09a82..da0e5bbce08f80 100644
--- a/api/PerformanceServerTiming.json
+++ b/api/PerformanceServerTiming.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PerformanceTiming.json b/api/PerformanceTiming.json
index ea6a0372e1240a..b906cf5fba3ac0 100644
--- a/api/PerformanceTiming.json
+++ b/api/PerformanceTiming.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +276,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +358,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -390,7 +399,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -430,7 +440,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -470,7 +481,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -510,7 +522,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -550,7 +563,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -590,7 +604,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -630,7 +645,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -670,7 +686,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -710,7 +727,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -750,7 +768,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -790,7 +809,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -828,7 +848,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -868,7 +889,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -908,7 +930,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PeriodicSyncEvent.json b/api/PeriodicSyncEvent.json
index 2061eb1861e081..b01ee3897e2a83 100644
--- a/api/PeriodicSyncEvent.json
+++ b/api/PeriodicSyncEvent.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PeriodicSyncManager.json b/api/PeriodicSyncManager.json
index d49d9f13c4921a..b38a7d9948ddb9 100644
--- a/api/PeriodicSyncManager.json
+++ b/api/PeriodicSyncManager.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PeriodicWave.json b/api/PeriodicWave.json
index 042dae5c3e01ff..937e90715ead60 100644
--- a/api/PeriodicWave.json
+++ b/api/PeriodicWave.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PeriodicWave",
         "spec_url": "https://webaudio.github.io/web-audio-api/#PeriodicWave",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "30"
@@ -31,7 +34,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,6 +48,9 @@
           "description": "<code>PeriodicWave()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PeriodicWave/PeriodicWave",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-periodicwave-periodicwave",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -65,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PermissionStatus.json b/api/PermissionStatus.json
index 8020cfdf135d1a..6eee10f99b0a81 100644
--- a/api/PermissionStatus.json
+++ b/api/PermissionStatus.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/490120"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -149,7 +152,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Permissions.json b/api/Permissions.json
index e6b436f84b2f76..34f48f4562f7c9 100644
--- a/api/Permissions.json
+++ b/api/Permissions.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/490120"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +43,9 @@
       "permission_accelerometer": {
         "__compat": {
           "description": "<code>accelerometer</code> permission",
+          "tags": [
+            "web-features:accelerometer"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -65,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -100,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -140,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +182,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -210,7 +218,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -229,7 +238,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "preview"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -245,6 +254,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -280,7 +292,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -293,6 +306,9 @@
         "__compat": {
           "description": "<code>clipboard-write</code> permission",
           "spec_url": "https://w3c.github.io/clipboard-apis/#dom-permissionname-clipboard-write",
+          "tags": [
+            "web-features:async-clipboard"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -316,7 +332,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -355,7 +372,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -390,6 +408,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -402,6 +423,9 @@
       "permission_gyroscope": {
         "__compat": {
           "description": "<code>gyroscope</code> permission",
+          "tags": [
+            "web-features:gyroscope"
+          ],
           "support": {
             "chrome": {
               "version_added": "51"
@@ -425,7 +449,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -462,7 +487,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -497,7 +523,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -516,7 +543,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "preview"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -532,6 +559,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -572,7 +602,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -607,6 +638,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -642,7 +676,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -677,7 +712,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -712,6 +748,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -751,7 +790,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -791,7 +831,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -829,7 +870,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -865,7 +907,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -904,7 +947,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -944,7 +988,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -983,7 +1028,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1037,7 +1083,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PictureInPictureEvent.json b/api/PictureInPictureEvent.json
index b4051cad978f75..3b6108662ceffd 100644
--- a/api/PictureInPictureEvent.json
+++ b/api/PictureInPictureEvent.json
@@ -46,7 +46,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -101,7 +102,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PictureInPictureWindow.json b/api/PictureInPictureWindow.json
index 67cb9b8700a8a7..a5453b6b548385 100644
--- a/api/PictureInPictureWindow.json
+++ b/api/PictureInPictureWindow.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +165,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Plugin.json b/api/Plugin.json
index d161fc600b0a81..c3ef226a57bed2 100644
--- a/api/Plugin.json
+++ b/api/Plugin.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Starting with version 59, method parameters are required instead of optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,7 +201,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -238,7 +243,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -284,7 +290,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Starting with version 59, method parameters are required instead of optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PluginArray.json b/api/PluginArray.json
index a07c32cd1bd287..d4af3433a9cb95 100644
--- a/api/PluginArray.json
+++ b/api/PluginArray.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Since WebView 59, method parameters are required instead of optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Since WebView 59, method parameters are required instead of optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PointerEvent.json b/api/PointerEvent.json
index cb8d7237dee45b..ec517610cf8300 100644
--- a/api/PointerEvent.json
+++ b/api/PointerEvent.json
@@ -37,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -83,13 +84,82 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "options_altitudeAngle_parameter": {
+          "__compat": {
+            "description": "<code>options.altitudeAngle</code> parameter",
+            "support": {
+              "chrome": {
+                "version_added": "86"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "131"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "preview"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "options_azimuthAngle_parameter": {
+          "__compat": {
+            "description": "<code>options.azimuthAngle</code> parameter",
+            "support": {
+              "chrome": {
+                "version_added": "86"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "131"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "preview"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       },
       "altitudeAngle": {
@@ -103,7 +173,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "131"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -113,14 +183,15 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -137,7 +208,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "131"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -147,14 +218,15 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -185,11 +257,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -219,11 +292,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -268,7 +342,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,7 +381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -317,6 +393,8 @@
       },
       "persistentDeviceId": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PointerEvent/persistentDeviceId",
+          "spec_url": "https://w3c.github.io/pointerevents/#dom-pointerevent-persistentdeviceid",
           "support": {
             "chrome": {
               "version_added": "128"
@@ -338,7 +416,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -376,7 +455,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +501,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -471,7 +552,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -517,7 +599,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -553,7 +636,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -591,7 +675,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -629,7 +714,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -667,7 +753,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -712,7 +799,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PopStateEvent.json b/api/PopStateEvent.json
index e40edf717552b4..78224e205f0abe 100644
--- a/api/PopStateEvent.json
+++ b/api/PopStateEvent.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,7 +143,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PositionSensorVRDevice.json b/api/PositionSensorVRDevice.json
index bd6a7ced5748e2..4768fcce9b09b6 100644
--- a/api/PositionSensorVRDevice.json
+++ b/api/PositionSensorVRDevice.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Presentation.json b/api/Presentation.json
index 9a042933255392..c5837cdda48724 100644
--- a/api/Presentation.json
+++ b/api/Presentation.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Presentation",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentation",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Presentation/defaultRequest",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentation-defaultrequest",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -62,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Presentation/receiver",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentation-receiver",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "59"
@@ -98,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationAvailability.json b/api/PresentationAvailability.json
index 474e9b510c9984..5ddca2f8732fc4 100644
--- a/api/PresentationAvailability.json
+++ b/api/PresentationAvailability.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationAvailability",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationavailability",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
         "__compat": {
           "description": "<code>change</code> event",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationavailability-onchange",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -62,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationAvailability/value",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationavailability-value",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -98,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationConnection.json b/api/PresentationConnection.json
index 7ad9c71d5e171f..918afa12b7a797 100644
--- a/api/PresentationConnection.json
+++ b/api/PresentationConnection.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationconnection",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/binaryType",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-binarytype",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -62,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/close",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-close",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -98,7 +109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -133,7 +145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -168,7 +181,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -181,6 +195,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/id",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-id",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -204,7 +221,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -239,7 +257,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -252,6 +271,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/send",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-send",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -275,7 +297,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -288,6 +311,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/state",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-state",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -311,7 +337,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -324,6 +351,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/terminate",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-terminate",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "48"
@@ -347,7 +377,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -382,7 +413,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -395,6 +427,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnection/url",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnection-url",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -418,7 +453,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationConnectionAvailableEvent.json b/api/PresentationConnectionAvailableEvent.json
index f756b9e8b632c7..3cfc9946af5277 100644
--- a/api/PresentationConnectionAvailableEvent.json
+++ b/api/PresentationConnectionAvailableEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnectionAvailableEvent",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationconnectionavailableevent",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -40,6 +44,9 @@
           "description": "<code>PresentationConnectionAvailableEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnectionAvailableEvent/PresentationConnectionAvailableEvent",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectionavailableevent-constructor",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -63,7 +70,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnectionAvailableEvent/connection",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectionavailableevent-connection",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -99,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationConnectionCloseEvent.json b/api/PresentationConnectionCloseEvent.json
index 9c7b35ca3b303c..0323834c1687c2 100644
--- a/api/PresentationConnectionCloseEvent.json
+++ b/api/PresentationConnectionCloseEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnectionCloseEvent",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationconnectioncloseevent",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "50"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -39,6 +43,9 @@
         "__compat": {
           "description": "<code>PresentationConnectionCloseEvent()</code> constructor",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectioncloseevent-constructor",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -62,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -74,6 +82,9 @@
       "message": {
         "__compat": {
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectioncloseevent-message",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -97,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,6 +121,9 @@
       "reason": {
         "__compat": {
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectioncloseevent-reason",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "50"
@@ -132,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationConnectionList.json b/api/PresentationConnectionList.json
index fcd00f9fa3c200..0e736c37d2f1fe 100644
--- a/api/PresentationConnectionList.json
+++ b/api/PresentationConnectionList.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationConnectionList",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationconnectionlist",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "59"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -61,7 +65,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -73,6 +78,9 @@
       "connections": {
         "__compat": {
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationconnectionlist-connections",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "59"
@@ -96,7 +104,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationReceiver.json b/api/PresentationReceiver.json
index 9677c908cfedd1..a72fb1c3c70009 100644
--- a/api/PresentationReceiver.json
+++ b/api/PresentationReceiver.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationReceiver",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationreceiver",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "59"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,6 +42,9 @@
       "connectionList": {
         "__compat": {
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationreceiver-connectionlist",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "59"
@@ -61,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PresentationRequest.json b/api/PresentationRequest.json
index c17ba7fd9a8fe9..cb3f95ed8f4167 100644
--- a/api/PresentationRequest.json
+++ b/api/PresentationRequest.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationRequest",
         "spec_url": "https://w3c.github.io/presentation-api/#interface-presentationrequest",
+        "tags": [
+          "web-features:presentation-api"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -27,7 +30,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -40,6 +44,9 @@
           "description": "<code>PresentationRequest()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationRequest/PresentationRequest",
           "spec_url": "https://w3c.github.io/presentation-api/#constructing-a-presentationrequest",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -63,7 +70,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -115,6 +124,9 @@
         "__compat": {
           "description": "<code>connectionavailable</code> event",
           "spec_url": "https://w3c.github.io/presentation-api/#dom-presentationrequest-onconnectionavailable",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -138,7 +150,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -151,6 +164,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationRequest/getAvailability",
           "spec_url": "https://w3c.github.io/presentation-api/#getting-the-presentation-displays-availability-information",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -174,7 +190,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -187,6 +204,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationRequest/reconnect",
           "spec_url": "https://w3c.github.io/presentation-api/#reconnecting-to-a-presentation",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -210,7 +230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -223,6 +244,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PresentationRequest/start",
           "spec_url": "https://w3c.github.io/presentation-api/#selecting-a-presentation-display",
+          "tags": [
+            "web-features:presentation-api"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -246,7 +270,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PressureObserver.json b/api/PressureObserver.json
index 9d83be45997562..d210230d91355e 100644
--- a/api/PressureObserver.json
+++ b/api/PressureObserver.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/PressureRecord.json b/api/PressureRecord.json
index b798152cc73990..5a56811cff11a6 100644
--- a/api/PressureRecord.json
+++ b/api/PressureRecord.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ProcessingInstruction.json b/api/ProcessingInstruction.json
index ca556a1f1f807d..256a05d3d37c4e 100644
--- a/api/ProcessingInstruction.json
+++ b/api/ProcessingInstruction.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Profiler.json b/api/Profiler.json
index 680501d8c057ef..0e0b2c088f08fb 100644
--- a/api/Profiler.json
+++ b/api/Profiler.json
@@ -3,6 +3,9 @@
     "Profiler": {
       "__compat": {
         "spec_url": "https://wicg.github.io/js-self-profiling/#the-profiler-interface",
+        "tags": [
+          "web-features:profiler"
+        ],
         "support": {
           "chrome": {
             "version_added": "94"
@@ -24,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -36,6 +40,9 @@
         "__compat": {
           "description": "<code>Profiler()</code> constructor",
           "spec_url": "https://wicg.github.io/js-self-profiling/#dom-profiler-constructor",
+          "tags": [
+            "web-features:profiler"
+          ],
           "support": {
             "chrome": {
               "version_added": "94"
@@ -57,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -69,6 +77,9 @@
       "sampleInterval": {
         "__compat": {
           "spec_url": "https://wicg.github.io/js-self-profiling/#dom-profiler-sampleinterval",
+          "tags": [
+            "web-features:profiler"
+          ],
           "support": {
             "chrome": {
               "version_added": "94"
@@ -90,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,6 +114,9 @@
       "stop": {
         "__compat": {
           "spec_url": "https://wicg.github.io/js-self-profiling/#dom-profiler-stop",
+          "tags": [
+            "web-features:profiler"
+          ],
           "support": {
             "chrome": {
               "version_added": "94"
@@ -123,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,6 +151,9 @@
       "stopped": {
         "__compat": {
           "spec_url": "https://wicg.github.io/js-self-profiling/#dom-profiler-stopped",
+          "tags": [
+            "web-features:profiler"
+          ],
           "support": {
             "chrome": {
               "version_added": "94"
@@ -156,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ProgressEvent.json b/api/ProgressEvent.json
index bbc0272074cd3d..0e98f3ddabc5c9 100644
--- a/api/ProgressEvent.json
+++ b/api/ProgressEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent",
         "spec_url": "https://xhr.spec.whatwg.org/#interface-progressevent",
+        "tags": [
+          "web-features:xhr"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -36,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +83,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,6 +97,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/lengthComputable",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-lengthcomputable",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -122,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,6 +144,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/loaded",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-loaded",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -167,7 +179,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,6 +193,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/total",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-total",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -212,7 +228,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PromiseRejectionEvent.json b/api/PromiseRejectionEvent.json
index a7d88aa2983203..5896c51e2fdb40 100644
--- a/api/PromiseRejectionEvent.json
+++ b/api/PromiseRejectionEvent.json
@@ -30,7 +30,8 @@
             "version_added": "11.3"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PublicKeyCredential.json b/api/PublicKeyCredential.json
index b69cf36a6e7cef..018ce406e72c26 100644
--- a/api/PublicKeyCredential.json
+++ b/api/PublicKeyCredential.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential",
         "spec_url": "https://w3c.github.io/webauthn/#iface-pkcredential",
+        "tags": [
+          "web-features:webauthn"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -42,7 +45,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -123,6 +129,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/getClientExtensionResults",
           "spec_url": "https://w3c.github.io/webauthn/#ref-for-dom-publickeycredential-getclientextensionresults",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -161,7 +170,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +183,7 @@
       "isConditionalMediationAvailable_static": {
         "__compat": {
           "description": "<code>isConditionalMediationAvailable()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/isConditionalMediationAvailable",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/isConditionalMediationAvailable_static",
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-isconditionalmediationavailable",
           "support": {
             "chrome": {
@@ -198,7 +208,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,6 +223,9 @@
           "description": "<code>isUserVerifyingPlatformAuthenticatorAvailable()</code> static method",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/isUserVerifyingPlatformAuthenticatorAvailable_static",
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-isuserverifyingplatformauthenticatoravailable",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -250,7 +264,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +281,7 @@
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-parsecreationoptionsfromjson",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "129"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
@@ -285,10 +300,13 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": {
+              "version_added": false
+            },
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -301,7 +319,7 @@
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-parserequestoptionsfromjson",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "129"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
@@ -320,10 +338,13 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": {
+              "version_added": false
+            },
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -333,6 +354,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/rawId",
           "spec_url": "https://w3c.github.io/webauthn/#ref-for-dom-publickeycredential-rawid",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -371,7 +395,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,6 +409,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/response",
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-response",
+          "tags": [
+            "web-features:webauthn"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -422,7 +450,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +466,7 @@
           "spec_url": "https://w3c.github.io/webauthn/#dom-publickeycredential-tojson",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "129"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
@@ -456,10 +485,13 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": {
+              "version_added": false
+            },
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/PushEvent.json b/api/PushEvent.json
index b67147b9e6809d..55e52e93fe8006 100644
--- a/api/PushEvent.json
+++ b/api/PushEvent.json
@@ -43,6 +43,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/421921"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -94,6 +98,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -141,6 +149,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
diff --git a/api/PushManager.json b/api/PushManager.json
index cbe41dfba7e536..c7650fa57e0aac 100644
--- a/api/PushManager.json
+++ b/api/PushManager.json
@@ -39,6 +39,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/421921"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -85,6 +89,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -124,7 +132,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,6 +180,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -210,7 +223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +263,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,6 +314,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -344,6 +363,10 @@
             },
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -383,7 +406,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/PushMessageData.json b/api/PushMessageData.json
index ee14a89313afd7..412ec43b8ead7c 100644
--- a/api/PushMessageData.json
+++ b/api/PushMessageData.json
@@ -39,6 +39,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/421921"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -85,6 +89,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -132,6 +140,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -166,7 +178,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -213,6 +228,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -260,6 +279,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
diff --git a/api/PushSubscription.json b/api/PushSubscription.json
index b7f6442cfe9135..0d8fd798689b12 100644
--- a/api/PushSubscription.json
+++ b/api/PushSubscription.json
@@ -39,6 +39,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/421921"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -85,6 +89,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -127,6 +135,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -175,6 +187,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -219,6 +235,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -256,7 +276,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,6 +327,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -356,6 +381,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
diff --git a/api/PushSubscriptionChangeEvent.json b/api/PushSubscriptionChangeEvent.json
index eb4e9b4da66fce..9dc2e880ac3805 100644
--- a/api/PushSubscriptionChangeEvent.json
+++ b/api/PushSubscriptionChangeEvent.json
@@ -33,7 +33,11 @@
             "notes": "Notifications are supported in web apps saved to the home screen."
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
+          }
         },
         "status": {
           "experimental": false,
@@ -72,7 +76,11 @@
               "notes": "Notifications are supported in web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": true,
@@ -112,7 +120,11 @@
               "notes": "Notifications are supported in web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": false,
@@ -152,7 +164,11 @@
               "notes": "Notifications are supported in web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/PushSubscriptionOptions.json b/api/PushSubscriptionOptions.json
index 31dbb9e0542a3f..bda96913699708 100644
--- a/api/PushSubscriptionOptions.json
+++ b/api/PushSubscriptionOptions.json
@@ -36,6 +36,10 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/421921"
+          },
+          "webview_ios": {
+            "version_added": false,
+            "notes": "Notifications are supported in web apps saved to the home screen."
           }
         },
         "status": {
@@ -79,6 +83,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -121,6 +129,10 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
diff --git a/api/RGBColor.json b/api/RGBColor.json
index 1a9f0705fad327..b996d19f504628 100644
--- a/api/RGBColor.json
+++ b/api/RGBColor.json
@@ -27,7 +27,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCCertificate.json b/api/RTCCertificate.json
index e156c44abd5bf2..297861218e796d 100644
--- a/api/RTCCertificate.json
+++ b/api/RTCCertificate.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCDTMFSender.json b/api/RTCDTMFSender.json
index 4f6f2fe56d94d7..5e340bbf3e3d93 100644
--- a/api/RTCDTMFSender.json
+++ b/api/RTCDTMFSender.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCDTMFToneChangeEvent.json b/api/RTCDTMFToneChangeEvent.json
index 50ce4860b1e478..324f1f64cb0a0c 100644
--- a/api/RTCDTMFToneChangeEvent.json
+++ b/api/RTCDTMFToneChangeEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCDataChannel.json b/api/RTCDataChannel.json
index 13c9d0b452b501..5183730949da50 100644
--- a/api/RTCDataChannel.json
+++ b/api/RTCDataChannel.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,8 +116,7 @@
             "description": "<code>Blob</code> value",
             "support": {
               "chrome": {
-                "version_added": false,
-                "impl_url": "https://crbug.com/webrtc/2276"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -135,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -321,7 +328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -359,7 +367,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -435,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -471,7 +482,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -505,7 +517,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -539,7 +552,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -579,7 +593,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -613,7 +628,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -653,7 +669,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -689,7 +706,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -722,7 +740,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -758,7 +777,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -794,7 +814,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -829,7 +850,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -862,7 +884,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -898,7 +921,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -934,7 +958,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCDataChannelEvent.json b/api/RTCDataChannelEvent.json
index e22a358dae84e8..231dd5d1a3832c 100644
--- a/api/RTCDataChannelEvent.json
+++ b/api/RTCDataChannelEvent.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             "samsunginternet_android": {
               "version_added": "7.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCDtlsTransport.json b/api/RTCDtlsTransport.json
index 4f8215535f6cb0..ede00082714899 100644
--- a/api/RTCDtlsTransport.json
+++ b/api/RTCDtlsTransport.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCEncodedAudioFrame.json b/api/RTCEncodedAudioFrame.json
index 40fec2cb9904db..676458b270f9d8 100644
--- a/api/RTCEncodedAudioFrame.json
+++ b/api/RTCEncodedAudioFrame.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCEncodedVideoFrame.json b/api/RTCEncodedVideoFrame.json
index d003d2a493094e..922dd49fcb7d62 100644
--- a/api/RTCEncodedVideoFrame.json
+++ b/api/RTCEncodedVideoFrame.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCError.json b/api/RTCError.json
index 23ef257f9586bf..a41fa29190882a 100644
--- a/api/RTCError.json
+++ b/api/RTCError.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -203,7 +208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -239,7 +245,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +282,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCErrorEvent.json b/api/RTCErrorEvent.json
index 989f83b5ef54b6..e76b71f5a5f9b4 100644
--- a/api/RTCErrorEvent.json
+++ b/api/RTCErrorEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +98,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCIceCandidate.json b/api/RTCIceCandidate.json
index 3ed07f5d234a09..793eaa55231c12 100644
--- a/api/RTCIceCandidate.json
+++ b/api/RTCIceCandidate.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -95,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -203,7 +207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -373,7 +382,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -407,7 +417,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -441,7 +452,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -481,7 +493,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -521,7 +534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -555,7 +569,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -591,7 +606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -625,7 +641,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -659,7 +676,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -694,7 +712,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCIceTransport.json b/api/RTCIceTransport.json
index b38768d045842c..a794c6dda35318 100644
--- a/api/RTCIceTransport.json
+++ b/api/RTCIceTransport.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,7 +135,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -238,7 +244,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -317,7 +325,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -355,7 +364,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -391,7 +401,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -429,7 +440,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCIdentityAssertion.json b/api/RTCIdentityAssertion.json
index abacdc273271b6..170eea77f406ea 100644
--- a/api/RTCIdentityAssertion.json
+++ b/api/RTCIdentityAssertion.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/RTCPeerConnection.json b/api/RTCPeerConnection.json
index 2f6ad059da01fa..f44925c1c54d8a 100644
--- a/api/RTCPeerConnection.json
+++ b/api/RTCPeerConnection.json
@@ -56,7 +56,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -128,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +167,8 @@
               "samsunginternet_android": {
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -203,7 +206,8 @@
               "samsunginternet_android": {
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +246,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -282,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -323,7 +329,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -360,7 +367,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -401,7 +409,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -441,7 +450,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -483,7 +493,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -524,7 +535,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -557,7 +569,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -598,7 +611,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -639,7 +653,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -671,7 +686,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -719,7 +735,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -766,7 +783,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -802,7 +820,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -836,7 +855,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -868,7 +888,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -901,7 +922,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -934,7 +956,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -977,7 +1000,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1015,7 +1039,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1049,7 +1074,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1084,7 +1110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1122,7 +1149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1160,7 +1188,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1197,7 +1226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1229,11 +1259,12 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -1267,7 +1298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1305,7 +1337,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1342,7 +1375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1376,7 +1410,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1413,7 +1448,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1452,7 +1488,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1490,7 +1527,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1527,7 +1565,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1572,7 +1611,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1608,7 +1648,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1640,7 +1681,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1686,7 +1728,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1722,7 +1765,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1754,7 +1798,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1791,7 +1836,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1823,7 +1869,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1858,7 +1905,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1895,7 +1943,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "79"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1927,7 +1976,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1967,7 +2017,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2003,7 +2054,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2039,7 +2091,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2076,7 +2129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2114,7 +2168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2153,7 +2208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2186,7 +2242,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2224,7 +2281,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2269,7 +2327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2306,7 +2365,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2342,7 +2402,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2378,7 +2439,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2416,7 +2478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2465,7 +2528,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2514,7 +2578,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2552,7 +2617,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2587,7 +2653,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2624,7 +2691,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2660,7 +2728,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2697,7 +2766,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2738,7 +2808,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2774,7 +2845,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2807,7 +2879,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2847,7 +2920,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2881,7 +2955,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2914,7 +2989,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2951,7 +3027,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2996,7 +3073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3039,7 +3117,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCPeerConnectionIceErrorEvent.json b/api/RTCPeerConnectionIceErrorEvent.json
index ebef1b9ae26db4..1a53c26ff766b8 100644
--- a/api/RTCPeerConnectionIceErrorEvent.json
+++ b/api/RTCPeerConnectionIceErrorEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +162,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -223,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +263,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCPeerConnectionIceEvent.json b/api/RTCPeerConnectionIceEvent.json
index c30405b65416e8..4bb03cad9898b3 100644
--- a/api/RTCPeerConnectionIceEvent.json
+++ b/api/RTCPeerConnectionIceEvent.json
@@ -34,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCRtpReceiver.json b/api/RTCRtpReceiver.json
index fff353ccd0c79a..484c922876eb67 100644
--- a/api/RTCRtpReceiver.json
+++ b/api/RTCRtpReceiver.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,7 +277,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -307,7 +315,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -342,7 +351,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -379,7 +389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -415,7 +426,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -452,7 +464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -489,7 +502,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -528,7 +542,8 @@
             "samsunginternet_android": {
               "version_added": "7.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -562,7 +577,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -594,7 +610,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -627,7 +644,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -662,7 +680,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -696,7 +715,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -732,7 +752,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -769,7 +790,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -805,7 +827,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCRtpScriptTransform.json b/api/RTCRtpScriptTransform.json
index cf6bd6e9f44584..55bb444ec3e4d1 100644
--- a/api/RTCRtpScriptTransform.json
+++ b/api/RTCRtpScriptTransform.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCRtpScriptTransformer.json b/api/RTCRtpScriptTransformer.json
index aa689d6ff0ea57..a023d9b97b5c66 100644
--- a/api/RTCRtpScriptTransformer.json
+++ b/api/RTCRtpScriptTransformer.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCRtpSender.json b/api/RTCRtpSender.json
index e721fe9c9c97e9..ab50dc9c58a172 100644
--- a/api/RTCRtpSender.json
+++ b/api/RTCRtpSender.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -243,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -280,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -319,7 +327,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -358,7 +367,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -395,7 +405,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -433,7 +444,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -468,7 +480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -502,7 +515,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -547,7 +561,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -590,7 +605,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -624,7 +640,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -661,7 +678,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -695,7 +713,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -728,7 +747,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -764,7 +784,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -800,7 +821,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -837,7 +859,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -870,7 +893,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -906,7 +930,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -946,7 +971,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -985,7 +1011,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1022,7 +1049,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1059,7 +1087,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "79"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1095,7 +1124,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1132,7 +1162,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1168,7 +1199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCRtpTransceiver.json b/api/RTCRtpTransceiver.json
index 06904579823fa3..582be754fc2f3b 100644
--- a/api/RTCRtpTransceiver.json
+++ b/api/RTCRtpTransceiver.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -262,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -330,7 +339,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -433,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +479,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCSctpTransport.json b/api/RTCSctpTransport.json
index 55538de6d8117f..3369286abad243 100644
--- a/api/RTCSctpTransport.json
+++ b/api/RTCSctpTransport.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCSessionDescription.json b/api/RTCSessionDescription.json
index 53dbcd72c6b1c0..a5894f2c68601b 100644
--- a/api/RTCSessionDescription.json
+++ b/api/RTCSessionDescription.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCStatsReport.json b/api/RTCStatsReport.json
index adbc22f3764742..6ca2fb7f44391b 100644
--- a/api/RTCStatsReport.json
+++ b/api/RTCStatsReport.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,7 +305,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -331,7 +340,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -365,7 +375,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -399,7 +410,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -433,7 +445,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -474,7 +487,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -508,7 +522,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -542,7 +557,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -576,7 +592,8 @@
               },
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -610,7 +627,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -644,7 +662,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -678,7 +697,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -712,7 +732,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -746,7 +767,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -786,7 +808,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -820,7 +843,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -854,7 +878,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -888,7 +913,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -922,7 +948,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -956,7 +983,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -990,7 +1018,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -1024,7 +1053,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1064,7 +1094,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1104,7 +1135,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1138,7 +1170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1174,7 +1207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -1207,7 +1241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1241,7 +1276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1275,7 +1311,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1309,7 +1346,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1343,7 +1381,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1377,7 +1416,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1413,7 +1453,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -1446,7 +1487,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1480,7 +1522,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1514,7 +1557,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1548,7 +1592,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1582,7 +1627,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1616,7 +1662,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1650,7 +1697,8 @@
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               "samsunginternet_android": "mirror",
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@@ -1684,7 +1732,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1718,7 +1767,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -1756,7 +1806,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -1791,7 +1842,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1827,7 +1879,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1863,7 +1916,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -1899,7 +1953,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -1935,7 +1990,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -1971,7 +2027,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2007,7 +2064,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2043,7 +2101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2079,7 +2138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2115,7 +2175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2151,7 +2212,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2187,7 +2249,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -2223,7 +2286,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2257,7 +2321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2294,7 +2359,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2328,7 +2394,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -2362,7 +2429,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2396,7 +2464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2430,7 +2499,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -2464,7 +2534,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -2499,7 +2570,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
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@@ -2533,7 +2605,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -2567,7 +2640,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -2601,7 +2675,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
@@ -2635,7 +2710,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
@@ -2669,7 +2745,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
@@ -2703,7 +2780,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2737,7 +2815,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -2771,7 +2850,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
@@ -2805,7 +2885,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -2839,7 +2920,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": true,
@@ -2873,7 +2955,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": true,
@@ -2907,7 +2990,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": true,
@@ -2941,7 +3025,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
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@@ -2978,7 +3063,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -3012,7 +3098,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -3048,7 +3135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -3082,7 +3170,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -3116,7 +3205,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -3150,7 +3240,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -3184,7 +3275,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -3218,7 +3310,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3251,7 +3344,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3285,7 +3379,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3319,7 +3414,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3353,7 +3449,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3387,7 +3484,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3421,7 +3519,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3455,7 +3554,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3489,7 +3589,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3523,7 +3624,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3557,7 +3659,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3591,7 +3694,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3625,7 +3729,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3659,7 +3764,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3693,7 +3799,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3727,7 +3834,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3763,7 +3871,8 @@
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             "samsunginternet_android": "mirror",
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@@ -3802,7 +3911,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3836,7 +3946,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3870,7 +3981,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3904,7 +4016,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3944,7 +4057,8 @@
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               "samsunginternet_android": "mirror",
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@@ -3978,7 +4092,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4018,7 +4133,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4052,7 +4168,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4087,7 +4204,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4121,7 +4239,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4155,7 +4274,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4191,7 +4311,8 @@
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             "samsunginternet_android": "mirror",
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@@ -4224,7 +4345,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4258,7 +4380,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4292,7 +4415,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4326,7 +4450,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4360,7 +4485,8 @@
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@@ -4394,7 +4520,8 @@
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@@ -4428,7 +4555,8 @@
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@@ -4462,7 +4590,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4496,7 +4625,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4532,7 +4662,8 @@
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             "samsunginternet_android": "mirror",
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@@ -4566,7 +4697,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4601,7 +4733,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4636,7 +4769,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4671,7 +4805,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4705,7 +4840,8 @@
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@@ -4739,7 +4875,8 @@
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@@ -4773,7 +4910,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4808,7 +4946,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4843,7 +4982,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4877,7 +5017,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4911,7 +5052,8 @@
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               "samsunginternet_android": "mirror",
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@@ -4946,7 +5088,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -4982,7 +5125,8 @@
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             "samsunginternet_android": "mirror",
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+            "webview_android": "mirror",
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@@ -5015,7 +5159,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5049,7 +5194,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5083,7 +5229,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5117,7 +5264,8 @@
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               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5152,7 +5300,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5186,7 +5335,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5220,7 +5370,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5254,7 +5405,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5288,7 +5440,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5322,7 +5475,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5356,7 +5510,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5390,7 +5545,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5424,7 +5580,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5458,7 +5615,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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               "experimental": true,
@@ -5492,7 +5650,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5526,7 +5685,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5560,7 +5720,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5594,7 +5755,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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               "experimental": true,
@@ -5628,7 +5790,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": true,
@@ -5667,7 +5830,8 @@
                 "version_added": false
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -5701,7 +5865,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5735,7 +5900,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
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+              "webview_android": "mirror",
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@@ -5769,7 +5935,8 @@
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               "samsunginternet_android": "mirror",
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@@ -5803,7 +5970,8 @@
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@@ -5837,7 +6005,8 @@
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@@ -5871,7 +6040,8 @@
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               "samsunginternet_android": "mirror",
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@@ -5906,7 +6076,8 @@
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               "samsunginternet_android": "mirror",
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@@ -5940,7 +6111,8 @@
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@@ -5974,7 +6146,8 @@
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@@ -6008,7 +6181,8 @@
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@@ -6042,7 +6216,8 @@
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@@ -6078,7 +6253,8 @@
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@@ -6112,7 +6288,8 @@
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@@ -6147,7 +6324,8 @@
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@@ -6182,7 +6360,8 @@
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@@ -6217,7 +6396,8 @@
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@@ -6252,7 +6432,8 @@
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@@ -6288,7 +6469,8 @@
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@@ -6327,7 +6509,8 @@
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@@ -6361,7 +6544,8 @@
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@@ -6395,7 +6579,8 @@
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               "samsunginternet_android": "mirror",
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@@ -6429,7 +6614,8 @@
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@@ -6469,7 +6655,8 @@
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@@ -6503,7 +6690,8 @@
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@@ -6543,7 +6731,8 @@
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@@ -6577,7 +6766,8 @@
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@@ -6612,7 +6802,8 @@
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@@ -6646,7 +6837,8 @@
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@@ -6680,7 +6872,8 @@
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@@ -6716,7 +6909,8 @@
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@@ -6749,7 +6943,8 @@
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@@ -6783,7 +6978,8 @@
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@@ -6817,7 +7013,8 @@
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@@ -6851,7 +7048,8 @@
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@@ -6885,7 +7083,8 @@
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@@ -6919,7 +7118,8 @@
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@@ -6953,7 +7153,8 @@
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@@ -6987,7 +7188,8 @@
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@@ -7021,7 +7223,8 @@
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@@ -7055,7 +7258,8 @@
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@@ -7089,7 +7293,8 @@
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@@ -7123,7 +7328,8 @@
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@@ -7157,7 +7363,8 @@
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@@ -7191,7 +7398,8 @@
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@@ -7225,7 +7433,8 @@
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@@ -7261,7 +7470,8 @@
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@@ -7294,7 +7504,8 @@
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@@ -7328,7 +7539,8 @@
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@@ -7362,7 +7574,8 @@
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@@ -7396,7 +7609,8 @@
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@@ -7430,7 +7644,8 @@
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@@ -7464,7 +7679,8 @@
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@@ -7498,7 +7714,8 @@
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@@ -7532,7 +7749,8 @@
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@@ -7566,7 +7784,8 @@
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@@ -7600,7 +7819,8 @@
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@@ -7634,7 +7854,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7668,7 +7889,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7702,7 +7924,8 @@
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@@ -7736,7 +7959,8 @@
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@@ -7772,7 +7996,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7805,7 +8030,8 @@
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@@ -7839,7 +8065,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7873,7 +8100,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7907,7 +8135,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7941,7 +8170,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7975,7 +8205,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8009,7 +8240,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8043,7 +8275,8 @@
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@@ -8077,7 +8310,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8111,7 +8345,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8145,7 +8380,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8179,7 +8415,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8213,7 +8450,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8247,7 +8485,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8281,7 +8520,8 @@
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               "samsunginternet_android": "mirror",
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@@ -8315,7 +8555,8 @@
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               "samsunginternet_android": "mirror",
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             "status": {
               "experimental": false,
@@ -8349,7 +8590,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8383,7 +8625,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8417,7 +8660,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8451,7 +8695,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8485,7 +8730,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCTrackEvent.json b/api/RTCTrackEvent.json
index e1b0322bff051c..0331dbf12af08f 100644
--- a/api/RTCTrackEvent.json
+++ b/api/RTCTrackEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,7 +212,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RTCTransformEvent.json b/api/RTCTransformEvent.json
index aef71d3e3b8bc7..b958cfc80fc1bd 100644
--- a/api/RTCTransformEvent.json
+++ b/api/RTCTransformEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RadioNodeList.json b/api/RadioNodeList.json
index 65c08d372fdacf..84cecabd1dba9a 100644
--- a/api/RadioNodeList.json
+++ b/api/RadioNodeList.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Range.json b/api/Range.json
index feec56fed1ec6b..53e90a07d21035 100644
--- a/api/Range.json
+++ b/api/Range.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,7 +155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -192,7 +196,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,7 +232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +274,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -308,7 +315,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -348,7 +356,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -385,7 +394,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -427,7 +437,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -467,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +519,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -553,7 +566,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -593,7 +607,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -633,7 +648,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -673,7 +689,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -717,7 +734,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -761,7 +779,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -801,7 +820,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -845,7 +865,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -887,7 +908,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -927,7 +949,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -967,7 +990,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1007,7 +1031,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1047,7 +1072,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1087,7 +1113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1127,7 +1154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1167,7 +1195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1207,7 +1236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1247,7 +1277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1287,7 +1318,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1327,7 +1359,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1367,7 +1400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReadableByteStreamController.json b/api/ReadableByteStreamController.json
index 1a35e187d3106a..f29546dbdd13a5 100644
--- a/api/ReadableByteStreamController.json
+++ b/api/ReadableByteStreamController.json
@@ -49,7 +49,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +253,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReadableStream.json b/api/ReadableStream.json
index a70631a5da901b..67fa176178d0b6 100644
--- a/api/ReadableStream.json
+++ b/api/ReadableStream.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -89,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -220,7 +224,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -308,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -351,7 +358,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -394,7 +402,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -473,7 +483,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -487,6 +498,9 @@
           "description": "[Symbol.asyncIterator]",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/asyncIterator",
           "spec_url": "https://streams.spec.whatwg.org/#rs-asynciterator",
+          "tags": [
+            "web-features:async-iterable-streams"
+          ],
           "support": {
             "chrome": {
               "version_added": "124"
@@ -514,7 +528,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReadableStreamBYOBReader.json b/api/ReadableStreamBYOBReader.json
index 94fb3fe5ef8bed..3b6870d618e3ba 100644
--- a/api/ReadableStreamBYOBReader.json
+++ b/api/ReadableStreamBYOBReader.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +285,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/ReadableStreamBYOBRequest.json b/api/ReadableStreamBYOBRequest.json
index aceca5cb002f0c..e573b25ee37145 100644
--- a/api/ReadableStreamBYOBRequest.json
+++ b/api/ReadableStreamBYOBRequest.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReadableStreamDefaultController.json b/api/ReadableStreamDefaultController.json
index 6779d0faf2c608..17df23608e00a9 100644
--- a/api/ReadableStreamDefaultController.json
+++ b/api/ReadableStreamDefaultController.json
@@ -49,7 +49,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReadableStreamDefaultReader.json b/api/ReadableStreamDefaultReader.json
index 25ecaaae8ca2d5..5ec6fcf3e16ac3 100644
--- a/api/ReadableStreamDefaultReader.json
+++ b/api/ReadableStreamDefaultReader.json
@@ -49,7 +49,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -89,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +172,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -209,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +293,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/Rect.json b/api/Rect.json
index 23be8e45f2847d..188a105b6418ad 100644
--- a/api/Rect.json
+++ b/api/Rect.json
@@ -27,7 +27,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RelativeOrientationSensor.json b/api/RelativeOrientationSensor.json
index 4abd7743803054..7f8a097243e750 100644
--- a/api/RelativeOrientationSensor.json
+++ b/api/RelativeOrientationSensor.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/RelativeOrientationSensor",
         "spec_url": "https://w3c.github.io/orientation-sensor/#relativeorientationsensor-interface",
+        "tags": [
+          "web-features:orientation-sensor"
+        ],
         "support": {
           "chrome": {
             "version_added": "67"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>RelativeOrientationSensor()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/RelativeOrientationSensor/RelativeOrientationSensor",
           "spec_url": "https://w3c.github.io/orientation-sensor/#dom-relativeorientationsensor-relativeorientationsensor",
+          "tags": [
+            "web-features:orientation-sensor"
+          ],
           "support": {
             "chrome": {
               "version_added": "67"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/RemotePlayback.json b/api/RemotePlayback.json
index e9f2201b9dd038..de6a5ca517c5d0 100644
--- a/api/RemotePlayback.json
+++ b/api/RemotePlayback.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/521319"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +148,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +188,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +227,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -260,7 +266,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -298,7 +305,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Report.json b/api/Report.json
index 959e4fccffc4e3..875a3efa14d744 100644
--- a/api/Report.json
+++ b/api/Report.json
@@ -11,7 +11,15 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false
+            "version_added": "65",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "dom.reporting.enabled",
+                "value_to_set": "true"
+              }
+            ],
+            "notes": "Worker support added in version 77"
           },
           "firefox_android": "mirror",
           "ie": {
@@ -25,7 +33,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,7 +53,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -58,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +94,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "77",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -91,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,7 +136,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -125,7 +157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +178,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -159,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReportBody.json b/api/ReportBody.json
index 3b1550079c052e..1dcd439be41ca8 100644
--- a/api/ReportBody.json
+++ b/api/ReportBody.json
@@ -11,7 +11,14 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false
+            "version_added": "65",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "dom.reporting.enabled",
+                "value_to_set": "true"
+              }
+            ]
           },
           "firefox_android": "mirror",
           "ie": {
@@ -25,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -44,7 +52,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "77",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -58,7 +73,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ReportingObserver.json b/api/ReportingObserver.json
index 213632ce708a6b..b48923f4ffc8bc 100644
--- a/api/ReportingObserver.json
+++ b/api/ReportingObserver.json
@@ -11,7 +11,14 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": false
+            "version_added": "65",
+            "flags": [
+              {
+                "type": "preference",
+                "name": "dom.reporting.enabled",
+                "value_to_set": "true"
+              }
+            ]
           },
           "firefox_android": "mirror",
           "ie": {
@@ -25,7 +32,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,7 +53,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -59,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +94,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "77",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -97,7 +120,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -117,7 +141,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -131,7 +162,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +183,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -165,7 +204,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +225,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "65",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -199,7 +246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Request.json b/api/Request.json
index bd555854a6c0aa..0b211beb0460eb 100644
--- a/api/Request.json
+++ b/api/Request.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request",
         "spec_url": "https://fetch.spec.whatwg.org/#request-class",
+        "tags": [
+          "web-features:fetch"
+        ],
         "support": {
           "chrome": [
             {
@@ -41,7 +44,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,6 +58,9 @@
           "description": "<code>Request()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/Request",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40",
@@ -89,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -160,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -193,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -233,7 +244,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -272,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -308,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -350,7 +364,8 @@
                 "version_added": "10.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -364,6 +379,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/arrayBuffer",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-arraybuffer①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -393,7 +411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,6 +425,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/blob",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-blob①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -435,7 +457,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -477,7 +500,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -490,6 +514,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/bodyUsed",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-bodyused①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -519,7 +546,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -556,7 +584,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -598,7 +627,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -637,7 +667,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -651,6 +682,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/clone",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-clone①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -680,7 +714,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -693,6 +728,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/credentials",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-credentials②",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -722,7 +760,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -766,7 +805,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -809,7 +849,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -856,7 +897,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -869,6 +911,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/headers",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-headers②",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -898,7 +943,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -940,7 +986,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -979,7 +1026,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -992,6 +1040,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/json",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-json①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -1021,7 +1072,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1062,7 +1114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1075,6 +1128,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/method",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-method②",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -1104,7 +1160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1117,6 +1174,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/mode",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-mode②",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -1146,7 +1206,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1189,7 +1250,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1233,7 +1295,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1275,7 +1338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1319,7 +1383,8 @@
             "samsunginternet_android": {
               "version_added": "7.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1364,7 +1429,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1397,7 +1463,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1410,6 +1477,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/text",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-text①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -1439,7 +1509,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1452,6 +1523,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Request/url",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-request-url③",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40",
@@ -1485,7 +1559,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ResizeObserver.json b/api/ResizeObserver.json
index c25d02387d4fa1..bbef013bd377ea 100644
--- a/api/ResizeObserver.json
+++ b/api/ResizeObserver.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ResizeObserverEntry.json b/api/ResizeObserverEntry.json
index 4bdf5eb2a2fc23..f5ebb29a47824e 100644
--- a/api/ResizeObserverEntry.json
+++ b/api/ResizeObserverEntry.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ResizeObserverSize.json b/api/ResizeObserverSize.json
index e3e035ba21b232..3963c844bcb292 100644
--- a/api/ResizeObserverSize.json
+++ b/api/ResizeObserverSize.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Response.json b/api/Response.json
index cd6d38301a44e8..b4b616d882b44a 100644
--- a/api/Response.json
+++ b/api/Response.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response",
         "spec_url": "https://fetch.spec.whatwg.org/#response-class",
+        "tags": [
+          "web-features:fetch"
+        ],
         "support": {
           "chrome": [
             {
@@ -41,7 +44,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,6 +58,9 @@
           "description": "<code>Response()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/Response",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -83,7 +90,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +133,8 @@
                 "version_added": "10.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -166,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,6 +190,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/arrayBuffer",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-arraybuffer①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -209,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,6 +236,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/blob",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-blob①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -251,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -293,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -331,7 +350,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -345,6 +365,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/bodyUsed",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-bodyused①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -374,7 +397,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -411,7 +435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -424,6 +449,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/clone",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-clone①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -453,7 +481,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -496,7 +525,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -543,7 +573,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -556,6 +587,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/headers",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-headers①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -585,7 +619,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -598,6 +633,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/json",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-json①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -627,7 +665,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -640,6 +679,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/json_static",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-json①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "105"
@@ -667,7 +709,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -680,6 +723,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/ok",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-ok②",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -709,7 +755,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -752,7 +799,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -798,7 +846,8 @@
             },
             "webview_android": {
               "version_added": "60"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -811,6 +860,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/status",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-status①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -840,7 +892,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -853,6 +906,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/statusText",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-statustext①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -882,7 +938,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -895,6 +952,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/text",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-body-text①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "42"
@@ -924,7 +984,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -937,6 +998,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/type",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-type①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -966,7 +1030,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -979,6 +1044,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Response/url",
           "spec_url": "https://fetch.spec.whatwg.org/#ref-for-dom-response-url①",
+          "tags": [
+            "web-features:fetch"
+          ],
           "support": {
             "chrome": {
               "version_added": "40"
@@ -1008,7 +1076,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAElement.json b/api/SVGAElement.json
index c0ad20276f4998..74e5749d844d43 100644
--- a/api/SVGAElement.json
+++ b/api/SVGAElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -211,7 +216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -279,7 +286,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +331,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -357,7 +366,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -390,7 +400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAngle.json b/api/SVGAngle.json
index aecc8e236e7dce..935c33a1c30fb6 100644
--- a/api/SVGAngle.json
+++ b/api/SVGAngle.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimateColorElement.json b/api/SVGAnimateColorElement.json
index fed128a336a524..4bc31f5258443b 100644
--- a/api/SVGAnimateColorElement.json
+++ b/api/SVGAnimateColorElement.json
@@ -38,7 +38,8 @@
           "webview_android": {
             "version_added": "1",
             "version_removed": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGAnimateElement.json b/api/SVGAnimateElement.json
index e80bb7fd228981..d2518cfb3b5cc1 100644
--- a/api/SVGAnimateElement.json
+++ b/api/SVGAnimateElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGAnimateMotionElement.json b/api/SVGAnimateMotionElement.json
index 61502b42f6ab00..5e26564498bf73 100644
--- a/api/SVGAnimateMotionElement.json
+++ b/api/SVGAnimateMotionElement.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGAnimateTransformElement.json b/api/SVGAnimateTransformElement.json
index 8bd92ba5ce243d..96aaf1c93df151 100644
--- a/api/SVGAnimateTransformElement.json
+++ b/api/SVGAnimateTransformElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGAnimatedAngle.json b/api/SVGAnimatedAngle.json
index 383149b049156d..9267e5dc738248 100644
--- a/api/SVGAnimatedAngle.json
+++ b/api/SVGAnimatedAngle.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedBoolean.json b/api/SVGAnimatedBoolean.json
index 242568338b40d4..29c59e9be8d616 100644
--- a/api/SVGAnimatedBoolean.json
+++ b/api/SVGAnimatedBoolean.json
@@ -33,7 +33,8 @@
             "version_added": "4"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedEnumeration.json b/api/SVGAnimatedEnumeration.json
index e755fddf49f224..526cdbda8cb73d 100644
--- a/api/SVGAnimatedEnumeration.json
+++ b/api/SVGAnimatedEnumeration.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedInteger.json b/api/SVGAnimatedInteger.json
index 6c4d58eabdd80d..d617213f2577a2 100644
--- a/api/SVGAnimatedInteger.json
+++ b/api/SVGAnimatedInteger.json
@@ -33,7 +33,8 @@
             "version_added": "4"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedLength.json b/api/SVGAnimatedLength.json
index b197b2018afa73..7df47a808e2935 100644
--- a/api/SVGAnimatedLength.json
+++ b/api/SVGAnimatedLength.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedLengthList.json b/api/SVGAnimatedLengthList.json
index 0f551abe494767..ded15e2da7c324 100644
--- a/api/SVGAnimatedLengthList.json
+++ b/api/SVGAnimatedLengthList.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedNumber.json b/api/SVGAnimatedNumber.json
index 0866596417332b..0e464feee44773 100644
--- a/api/SVGAnimatedNumber.json
+++ b/api/SVGAnimatedNumber.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedNumberList.json b/api/SVGAnimatedNumberList.json
index 05bd4dd0fea540..af6b5dcc51d039 100644
--- a/api/SVGAnimatedNumberList.json
+++ b/api/SVGAnimatedNumberList.json
@@ -33,7 +33,8 @@
             "version_added": "4"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedPreserveAspectRatio.json b/api/SVGAnimatedPreserveAspectRatio.json
index 572cc5a4d1d774..5d9f12fca3e32e 100644
--- a/api/SVGAnimatedPreserveAspectRatio.json
+++ b/api/SVGAnimatedPreserveAspectRatio.json
@@ -33,7 +33,8 @@
             "version_added": "4"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedRect.json b/api/SVGAnimatedRect.json
index 0fbd4e7a1688b2..dfdafe87c49a1c 100644
--- a/api/SVGAnimatedRect.json
+++ b/api/SVGAnimatedRect.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedString.json b/api/SVGAnimatedString.json
index e4c141779db7bd..76f5bbec479276 100644
--- a/api/SVGAnimatedString.json
+++ b/api/SVGAnimatedString.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimatedTransformList.json b/api/SVGAnimatedTransformList.json
index 0009f92629c74b..51d295b39a9c84 100644
--- a/api/SVGAnimatedTransformList.json
+++ b/api/SVGAnimatedTransformList.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGAnimationElement.json b/api/SVGAnimationElement.json
index ffdad6d8949f40..7d25600c617084 100644
--- a/api/SVGAnimationElement.json
+++ b/api/SVGAnimationElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +203,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +242,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -290,7 +296,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -328,7 +335,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -366,7 +374,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -404,7 +413,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -457,7 +467,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -498,7 +509,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -539,7 +551,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -579,7 +592,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGCircleElement.json b/api/SVGCircleElement.json
index 540c6eb7f3ae58..7a6d39ca605142 100644
--- a/api/SVGCircleElement.json
+++ b/api/SVGCircleElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGClipPathElement.json b/api/SVGClipPathElement.json
index 0da609fba98a96..6c70cb874ef52c 100644
--- a/api/SVGClipPathElement.json
+++ b/api/SVGClipPathElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGComponentTransferFunctionElement.json b/api/SVGComponentTransferFunctionElement.json
index 3a98db3d94db8a..f9c665a56f5ab7 100644
--- a/api/SVGComponentTransferFunctionElement.json
+++ b/api/SVGComponentTransferFunctionElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGCursorElement.json b/api/SVGCursorElement.json
index e5a6450495ddd8..604039842462f9 100644
--- a/api/SVGCursorElement.json
+++ b/api/SVGCursorElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "57"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGDefsElement.json b/api/SVGDefsElement.json
index ae8ca07be6144e..c266c152ebca36 100644
--- a/api/SVGDefsElement.json
+++ b/api/SVGDefsElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGDescElement.json b/api/SVGDescElement.json
index 3d79079fba4861..911d18f8342039 100644
--- a/api/SVGDescElement.json
+++ b/api/SVGDescElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGElement.json b/api/SVGElement.json
index 918e379d05ffba..b6f4965c565f79 100644
--- a/api/SVGElement.json
+++ b/api/SVGElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +198,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +239,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -277,7 +283,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -316,7 +323,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -352,7 +360,8 @@
                 "version_added": "15.5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -400,7 +409,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -433,7 +443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -476,7 +487,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +530,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -553,7 +566,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -596,7 +610,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGEllipseElement.json b/api/SVGEllipseElement.json
index e14e57b926fc69..6a2cf9b149fa2c 100644
--- a/api/SVGEllipseElement.json
+++ b/api/SVGEllipseElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEBlendElement.json b/api/SVGFEBlendElement.json
index 55ae820545d334..441d01cd333146 100644
--- a/api/SVGFEBlendElement.json
+++ b/api/SVGFEBlendElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEColorMatrixElement.json b/api/SVGFEColorMatrixElement.json
index 7ca19403cf5298..ba8a13d6ae075e 100644
--- a/api/SVGFEColorMatrixElement.json
+++ b/api/SVGFEColorMatrixElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEComponentTransferElement.json b/api/SVGFEComponentTransferElement.json
index 25127873983e93..24fa037bb56185 100644
--- a/api/SVGFEComponentTransferElement.json
+++ b/api/SVGFEComponentTransferElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,7 +300,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFECompositeElement.json b/api/SVGFECompositeElement.json
index 9d325cff2f3922..c05eae8d7ca974 100644
--- a/api/SVGFECompositeElement.json
+++ b/api/SVGFECompositeElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -498,7 +510,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEConvolveMatrixElement.json b/api/SVGFEConvolveMatrixElement.json
index e5144f80b869d0..d9750aa7718c82 100644
--- a/api/SVGFEConvolveMatrixElement.json
+++ b/api/SVGFEConvolveMatrixElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -498,7 +510,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -537,7 +550,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -576,7 +590,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -615,7 +630,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -654,7 +670,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -693,7 +710,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEDiffuseLightingElement.json b/api/SVGFEDiffuseLightingElement.json
index 2a5968531780f3..ec04971ecf9930 100644
--- a/api/SVGFEDiffuseLightingElement.json
+++ b/api/SVGFEDiffuseLightingElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEDisplacementMapElement.json b/api/SVGFEDisplacementMapElement.json
index 1b9b8fea977e6f..ee8b5a25a383f8 100644
--- a/api/SVGFEDisplacementMapElement.json
+++ b/api/SVGFEDisplacementMapElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEDistantLightElement.json b/api/SVGFEDistantLightElement.json
index 85cd6b095371db..6a3059cf44f7d3 100644
--- a/api/SVGFEDistantLightElement.json
+++ b/api/SVGFEDistantLightElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEDropShadowElement.json b/api/SVGFEDropShadowElement.json
index 7f59e1cf6b194b..563c45fbe535fc 100644
--- a/api/SVGFEDropShadowElement.json
+++ b/api/SVGFEDropShadowElement.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -156,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +228,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -288,7 +296,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -321,7 +330,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -354,7 +364,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -387,7 +398,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEFloodElement.json b/api/SVGFEFloodElement.json
index f9db619d3d1188..af285dce0b5d61 100644
--- a/api/SVGFEFloodElement.json
+++ b/api/SVGFEFloodElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +214,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,7 +260,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEFuncAElement.json b/api/SVGFEFuncAElement.json
index bd2d9fdc964a36..f2085ec5ed2f05 100644
--- a/api/SVGFEFuncAElement.json
+++ b/api/SVGFEFuncAElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFEFuncBElement.json b/api/SVGFEFuncBElement.json
index 971374f1011767..caab3d300f52bb 100644
--- a/api/SVGFEFuncBElement.json
+++ b/api/SVGFEFuncBElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFEFuncGElement.json b/api/SVGFEFuncGElement.json
index d3273bae4ac527..009e90584702a7 100644
--- a/api/SVGFEFuncGElement.json
+++ b/api/SVGFEFuncGElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFEFuncRElement.json b/api/SVGFEFuncRElement.json
index 1db3311654d12e..ed8a02b30d81a8 100644
--- a/api/SVGFEFuncRElement.json
+++ b/api/SVGFEFuncRElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFEGaussianBlurElement.json b/api/SVGFEGaussianBlurElement.json
index de502a4e7ed8f8..210d1b38a64de9 100644
--- a/api/SVGFEGaussianBlurElement.json
+++ b/api/SVGFEGaussianBlurElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -192,7 +196,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -231,7 +236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -309,7 +316,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -354,7 +362,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +408,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -444,7 +454,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEImageElement.json b/api/SVGFEImageElement.json
index 1e1e17ae7a7904..ce0ff0ac9df099 100644
--- a/api/SVGFEImageElement.json
+++ b/api/SVGFEImageElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -259,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -298,7 +305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -337,7 +345,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEMergeElement.json b/api/SVGFEMergeElement.json
index 37ce7f6229a8f0..3fd1e5ff798ffa 100644
--- a/api/SVGFEMergeElement.json
+++ b/api/SVGFEMergeElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEMergeNodeElement.json b/api/SVGFEMergeNodeElement.json
index a011e4d0be1cd9..d3da813958506e 100644
--- a/api/SVGFEMergeNodeElement.json
+++ b/api/SVGFEMergeNodeElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEMorphologyElement.json b/api/SVGFEMorphologyElement.json
index 37e7b8aa4778ad..adf4c57817dc64 100644
--- a/api/SVGFEMorphologyElement.json
+++ b/api/SVGFEMorphologyElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEOffsetElement.json b/api/SVGFEOffsetElement.json
index b69c0caa9169fd..41faf955f429ad 100644
--- a/api/SVGFEOffsetElement.json
+++ b/api/SVGFEOffsetElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFEPointLightElement.json b/api/SVGFEPointLightElement.json
index 2df349d514bcf2..4b5ea1dc4784d3 100644
--- a/api/SVGFEPointLightElement.json
+++ b/api/SVGFEPointLightElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFESpecularLightingElement.json b/api/SVGFESpecularLightingElement.json
index 078dcd59283d66..5c53f40b39c9e0 100644
--- a/api/SVGFESpecularLightingElement.json
+++ b/api/SVGFESpecularLightingElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +302,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,7 +342,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -373,7 +382,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -412,7 +422,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -451,7 +462,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFESpotLightElement.json b/api/SVGFESpotLightElement.json
index 188ea3eda25d4e..d2f38c521354df 100644
--- a/api/SVGFESpotLightElement.json
+++ b/api/SVGFESpotLightElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFETileElement.json b/api/SVGFETileElement.json
index 57d3209420ae35..b9994d304fc160 100644
--- a/api/SVGFETileElement.json
+++ b/api/SVGFETileElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFETurbulenceElement.json b/api/SVGFETurbulenceElement.json
index 9a39fa2c6373d3..a2a146bd843548 100644
--- a/api/SVGFETurbulenceElement.json
+++ b/api/SVGFETurbulenceElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -381,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFilterElement.json b/api/SVGFilterElement.json
index 68f6a39f0d81dc..36304a6285e955 100644
--- a/api/SVGFilterElement.json
+++ b/api/SVGFilterElement.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -303,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGFontElement.json b/api/SVGFontElement.json
index 720be0f2ea31fd..7c0da00232ae55 100644
--- a/api/SVGFontElement.json
+++ b/api/SVGFontElement.json
@@ -36,7 +36,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFontFaceElement.json b/api/SVGFontFaceElement.json
index 160bc7504d2c18..96a04ec9d8a2da 100644
--- a/api/SVGFontFaceElement.json
+++ b/api/SVGFontFaceElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFontFaceFormatElement.json b/api/SVGFontFaceFormatElement.json
index 154d64ee454f1e..2d0a17af099934 100644
--- a/api/SVGFontFaceFormatElement.json
+++ b/api/SVGFontFaceFormatElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFontFaceNameElement.json b/api/SVGFontFaceNameElement.json
index e79944686e47db..2565e616e0a2e1 100644
--- a/api/SVGFontFaceNameElement.json
+++ b/api/SVGFontFaceNameElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFontFaceSrcElement.json b/api/SVGFontFaceSrcElement.json
index c1c2959f937f27..37a89fe486f52f 100644
--- a/api/SVGFontFaceSrcElement.json
+++ b/api/SVGFontFaceSrcElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGFontFaceUriElement.json b/api/SVGFontFaceUriElement.json
index 60c3e9e9b385a8..1af2d7baf12c53 100644
--- a/api/SVGFontFaceUriElement.json
+++ b/api/SVGFontFaceUriElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGForeignObjectElement.json b/api/SVGForeignObjectElement.json
index 03cdaf0603bd0a..e811ea1875f2e1 100644
--- a/api/SVGForeignObjectElement.json
+++ b/api/SVGForeignObjectElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -157,7 +160,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGGElement.json b/api/SVGGElement.json
index a5983c9ed571e1..366ba29e1280d7 100644
--- a/api/SVGGElement.json
+++ b/api/SVGGElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGGeometryElement.json b/api/SVGGeometryElement.json
index da1be5d4074774..b5ca6dda1a1010 100644
--- a/api/SVGGeometryElement.json
+++ b/api/SVGGeometryElement.json
@@ -101,7 +101,8 @@
               "partial_implementation": true,
               "notes": "The <code>SVGGeometryElement</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/SVGPathElement'><code>SVGPathElement</code></a> interface."
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -210,7 +211,8 @@
                 "partial_implementation": true,
                 "notes": "Only supported for <a href='https://developer.mozilla.org/docs/Web/API/SVGPathElement'><code>SVGPathElement</code></a>, not all <code>SVGGeometryElement</code> objects."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,7 +322,8 @@
                 "partial_implementation": true,
                 "notes": "Only supported for <a href='https://developer.mozilla.org/docs/Web/API/SVGPathElement'><code>SVGPathElement</code></a>, not all <code>SVGGeometryElement</code> objects."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -357,7 +360,8 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -389,7 +393,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -427,7 +432,8 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +465,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -558,7 +565,8 @@
                 "partial_implementation": true,
                 "notes": "Only supported for <a href='https://developer.mozilla.org/docs/Web/API/SVGPathElement'><code>SVGPathElement</code></a>, not all <code>SVGGeometryElement</code> objects."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGGlyphElement.json b/api/SVGGlyphElement.json
index 8df0a3cdf2c0ef..57178a2da4a91e 100644
--- a/api/SVGGlyphElement.json
+++ b/api/SVGGlyphElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGGlyphRefElement.json b/api/SVGGlyphRefElement.json
index 97d93ca4994fb1..4175025b0d8bed 100644
--- a/api/SVGGlyphRefElement.json
+++ b/api/SVGGlyphRefElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,7 +143,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -177,7 +181,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -251,7 +257,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -288,7 +295,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "40"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGGradientElement.json b/api/SVGGradientElement.json
index 3658394f35744a..92d824ab15d141 100644
--- a/api/SVGGradientElement.json
+++ b/api/SVGGradientElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGGraphicsElement.json b/api/SVGGraphicsElement.json
index a7c39339d61101..8aa15689603019 100644
--- a/api/SVGGraphicsElement.json
+++ b/api/SVGGraphicsElement.json
@@ -93,7 +93,8 @@
               "partial_implementation": true,
               "notes": "The <code>SVGGraphicsElement</code> interface itself is not present, but some of its members are available on interfaces that inherit from <code>SVGGraphicsElement</code>."
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -140,7 +141,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -183,7 +185,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +231,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +275,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +319,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -357,7 +363,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGHKernElement.json b/api/SVGHKernElement.json
index b0dcd40f5c6e12..293526fa058feb 100644
--- a/api/SVGHKernElement.json
+++ b/api/SVGHKernElement.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGImageElement.json b/api/SVGImageElement.json
index 04d4822e46eca1..1c2bb38c35faeb 100644
--- a/api/SVGImageElement.json
+++ b/api/SVGImageElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -223,7 +228,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +273,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -311,7 +318,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -355,7 +363,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -399,7 +408,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGLength.json b/api/SVGLength.json
index b88211d96cac2d..4fb310869825b6 100644
--- a/api/SVGLength.json
+++ b/api/SVGLength.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGLengthList.json b/api/SVGLengthList.json
index bc776d12e83d5b..38ca7e3bae1f77 100644
--- a/api/SVGLengthList.json
+++ b/api/SVGLengthList.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +163,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,7 +249,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -280,7 +286,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -322,7 +329,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,7 +372,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -406,7 +415,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGLineElement.json b/api/SVGLineElement.json
index f46b39b8c0f3df..81ebd490d8e006 100644
--- a/api/SVGLineElement.json
+++ b/api/SVGLineElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGLinearGradientElement.json b/api/SVGLinearGradientElement.json
index e2bd89dddead60..4c774b7bcf6909 100644
--- a/api/SVGLinearGradientElement.json
+++ b/api/SVGLinearGradientElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGMPathElement.json b/api/SVGMPathElement.json
index f913c6c1e0cb24..5a79e90068daec 100644
--- a/api/SVGMPathElement.json
+++ b/api/SVGMPathElement.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGMarkerElement.json b/api/SVGMarkerElement.json
index 50e8859cab6311..7ca0b4a3c9ce67 100644
--- a/api/SVGMarkerElement.json
+++ b/api/SVGMarkerElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -243,7 +248,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,7 +293,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -331,7 +338,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -375,7 +383,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -419,7 +428,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -463,7 +473,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +518,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -551,7 +563,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGMaskElement.json b/api/SVGMaskElement.json
index 627bb21fda00ce..f376479dcf2dbf 100644
--- a/api/SVGMaskElement.json
+++ b/api/SVGMaskElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +165,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +255,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,7 +300,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGMetadataElement.json b/api/SVGMetadataElement.json
index e728c0a106fbaa..7b289eb909a50b 100644
--- a/api/SVGMetadataElement.json
+++ b/api/SVGMetadataElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGMissingGlyphElement.json b/api/SVGMissingGlyphElement.json
index 48c822bb605a6c..b481d1c168a8b2 100644
--- a/api/SVGMissingGlyphElement.json
+++ b/api/SVGMissingGlyphElement.json
@@ -36,7 +36,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGNumber.json b/api/SVGNumber.json
index ee504460896c14..d3e758636dccc8 100644
--- a/api/SVGNumber.json
+++ b/api/SVGNumber.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGNumberList.json b/api/SVGNumberList.json
index 8ca7e4bcfaa890..d71c10245fca65 100644
--- a/api/SVGNumberList.json
+++ b/api/SVGNumberList.json
@@ -33,7 +33,8 @@
             "version_added": "4"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -184,7 +188,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,7 +342,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPathElement.json b/api/SVGPathElement.json
index 8f36d649f3579a..bc169f73dbd012 100644
--- a/api/SVGPathElement.json
+++ b/api/SVGPathElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -82,7 +83,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +132,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +181,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,7 +230,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -274,7 +279,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -322,7 +328,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -370,7 +377,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -418,7 +426,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +475,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -514,7 +524,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -562,7 +573,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -610,7 +622,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -658,7 +671,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -706,7 +720,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -754,7 +769,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -802,7 +818,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -850,7 +867,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -898,7 +916,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -946,7 +965,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "48"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1006,7 +1026,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "62"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPatternElement.json b/api/SVGPatternElement.json
index b16ca576469c3a..3a5a8e999275a7 100644
--- a/api/SVGPatternElement.json
+++ b/api/SVGPatternElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +342,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +386,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +430,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -464,7 +474,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPoint.json b/api/SVGPoint.json
index 49a13f0f0e452c..b5d2b3f5e5f163 100644
--- a/api/SVGPoint.json
+++ b/api/SVGPoint.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPointList.json b/api/SVGPointList.json
index bb82624b9bf6a8..98ae7eefb86557 100644
--- a/api/SVGPointList.json
+++ b/api/SVGPointList.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +214,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +259,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -336,7 +343,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -380,7 +388,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -424,7 +433,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPolygonElement.json b/api/SVGPolygonElement.json
index ac9c7a39d30a05..a4c4c8c5b91611 100644
--- a/api/SVGPolygonElement.json
+++ b/api/SVGPolygonElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPolylineElement.json b/api/SVGPolylineElement.json
index aa605a0ed39326..a3656183659967 100644
--- a/api/SVGPolylineElement.json
+++ b/api/SVGPolylineElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGPreserveAspectRatio.json b/api/SVGPreserveAspectRatio.json
index 68a8ee2220d6c5..cc5a41004f1e45 100644
--- a/api/SVGPreserveAspectRatio.json
+++ b/api/SVGPreserveAspectRatio.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +126,8 @@
             },
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGRadialGradientElement.json b/api/SVGRadialGradientElement.json
index b848eabc9db8f4..dbd3e70d73d02f 100644
--- a/api/SVGRadialGradientElement.json
+++ b/api/SVGRadialGradientElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -153,7 +156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -239,7 +244,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,7 +288,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGRect.json b/api/SVGRect.json
index 45f999fdfa731a..84fcc26844b87b 100644
--- a/api/SVGRect.json
+++ b/api/SVGRect.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -203,7 +207,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGRectElement.json b/api/SVGRectElement.json
index c09bc1d2399dee..3522603ae0736c 100644
--- a/api/SVGRectElement.json
+++ b/api/SVGRectElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +250,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -288,7 +294,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGRenderingIntent.json b/api/SVGRenderingIntent.json
index f02e4ca638af76..a8ca0c5a943dd7 100644
--- a/api/SVGRenderingIntent.json
+++ b/api/SVGRenderingIntent.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "45"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGSVGElement.json b/api/SVGSVGElement.json
index c02bb821a5d7dc..d4b6c0608861c9 100644
--- a/api/SVGSVGElement.json
+++ b/api/SVGSVGElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +165,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +209,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +253,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +297,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,7 +341,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -377,7 +385,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +429,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -463,7 +473,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -506,7 +517,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -549,7 +561,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -592,7 +605,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -627,7 +641,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -670,7 +685,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -713,7 +729,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -755,7 +772,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -796,7 +814,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -839,7 +858,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -882,7 +902,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -925,7 +946,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -967,7 +989,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1010,7 +1033,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1052,7 +1076,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1095,7 +1120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1137,7 +1163,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1180,7 +1207,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1223,7 +1251,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1270,7 +1299,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "56"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1313,7 +1343,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1356,7 +1387,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1399,7 +1431,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1442,7 +1475,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGScriptElement.json b/api/SVGScriptElement.json
index 8592abc0d46ea7..a02aa59d2880a5 100644
--- a/api/SVGScriptElement.json
+++ b/api/SVGScriptElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -174,7 +178,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGSetElement.json b/api/SVGSetElement.json
index 55da95c4e3ba58..35b1baf02372de 100644
--- a/api/SVGSetElement.json
+++ b/api/SVGSetElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGStopElement.json b/api/SVGStopElement.json
index b33bb1e87498b7..d796373cc0a84b 100644
--- a/api/SVGStopElement.json
+++ b/api/SVGStopElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGStringList.json b/api/SVGStringList.json
index 0cf31ed5de4003..37072d94e5b377 100644
--- a/api/SVGStringList.json
+++ b/api/SVGStringList.json
@@ -39,7 +39,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +167,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +253,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -259,6 +265,7 @@
       },
       "length": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__length",
           "support": {
             "chrome": {
               "version_added": "35"
@@ -284,11 +291,12 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
+            "standard_track": true,
             "deprecated": false
           }
         }
@@ -326,7 +334,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -368,7 +377,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -410,7 +420,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGStyleElement.json b/api/SVGStyleElement.json
index 8557af29cb7422..deeaa33c7fb07c 100644
--- a/api/SVGStyleElement.json
+++ b/api/SVGStyleElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,7 +257,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGSwitchElement.json b/api/SVGSwitchElement.json
index 0ba26fb2decff2..186d7f6c8f64e1 100644
--- a/api/SVGSwitchElement.json
+++ b/api/SVGSwitchElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGSymbolElement.json b/api/SVGSymbolElement.json
index 75e049c5062ed3..a79cb0c33bd91a 100644
--- a/api/SVGSymbolElement.json
+++ b/api/SVGSymbolElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGTRefElement.json b/api/SVGTRefElement.json
index 0aabb4d79f3e1e..650345d1d83e48 100644
--- a/api/SVGTRefElement.json
+++ b/api/SVGTRefElement.json
@@ -36,7 +36,8 @@
           "webview_android": {
             "version_added": "1",
             "version_removed": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGTSpanElement.json b/api/SVGTSpanElement.json
index cccabd039c3912..6c4314b880aa1a 100644
--- a/api/SVGTSpanElement.json
+++ b/api/SVGTSpanElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGTextContentElement.json b/api/SVGTextContentElement.json
index 3c9c21949cd6fa..11ac349561dd8e 100644
--- a/api/SVGTextContentElement.json
+++ b/api/SVGTextContentElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +342,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +386,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -421,7 +430,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -464,7 +474,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +518,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGTextElement.json b/api/SVGTextElement.json
index 2dc21f35af65a6..0d4e4a5dcd7403 100644
--- a/api/SVGTextElement.json
+++ b/api/SVGTextElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGTextPathElement.json b/api/SVGTextPathElement.json
index 7bc2828b7e1db3..a4228d3ebb89af 100644
--- a/api/SVGTextPathElement.json
+++ b/api/SVGTextPathElement.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGTextPositioningElement.json b/api/SVGTextPositioningElement.json
index 237b4a1a1cb5b4..c231c2f1ecd0c1 100644
--- a/api/SVGTextPositioningElement.json
+++ b/api/SVGTextPositioningElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGTitleElement.json b/api/SVGTitleElement.json
index 644a3432b90074..7b152ed566ef51 100644
--- a/api/SVGTitleElement.json
+++ b/api/SVGTitleElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGTransform.json b/api/SVGTransform.json
index db827ec0a31fb6..df8464936d6600 100644
--- a/api/SVGTransform.json
+++ b/api/SVGTransform.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +242,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -278,7 +284,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -319,7 +326,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +368,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -401,7 +410,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGTransformList.json b/api/SVGTransformList.json
index d136b6a9cdb4b1..faee591c972ca0 100644
--- a/api/SVGTransformList.json
+++ b/api/SVGTransformList.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +210,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -292,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +342,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -346,6 +354,7 @@
       },
       "length": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__length",
           "support": {
             "chrome": {
               "version_added": "35"
@@ -373,11 +382,12 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": false,
+            "standard_track": true,
             "deprecated": false
           }
         }
@@ -416,7 +426,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -459,7 +470,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -502,7 +514,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGUnitTypes.json b/api/SVGUnitTypes.json
index 38187dcbcae6d3..35d9210205582e 100644
--- a/api/SVGUnitTypes.json
+++ b/api/SVGUnitTypes.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGUseElement.json b/api/SVGUseElement.json
index d115c2fa81b7f9..b84c38b276e270 100644
--- a/api/SVGUseElement.json
+++ b/api/SVGUseElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -200,7 +204,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +246,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SVGVKernElement.json b/api/SVGVKernElement.json
index 3291aa2b4618cc..b1e29e6674cc3f 100644
--- a/api/SVGVKernElement.json
+++ b/api/SVGVKernElement.json
@@ -30,7 +30,8 @@
           "webview_android": {
             "version_added": "≤37",
             "version_removed": "40"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/SVGViewElement.json b/api/SVGViewElement.json
index e3c770b0e33209..441723f830a4b2 100644
--- a/api/SVGViewElement.json
+++ b/api/SVGViewElement.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -77,7 +78,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Scheduler.json b/api/Scheduler.json
index e2e22aa91b36f7..05d3823008ded2 100644
--- a/api/Scheduler.json
+++ b/api/Scheduler.json
@@ -36,7 +36,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,6 +89,43 @@
             "deprecated": false
           }
         }
+      },
+      "yield": {
+        "__compat": {
+          "spec_url": "https://wicg.github.io/scheduling-apis/#dom-scheduler-yield",
+          "tags": [
+            "web-features:scheduler"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "129"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
       }
     }
   }
diff --git a/api/Scheduling.json b/api/Scheduling.json
index 4f86bc8beb9f14..ac91cb26b1d8fa 100644
--- a/api/Scheduling.json
+++ b/api/Scheduling.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Screen.json b/api/Screen.json
index c0bb9dc589a2be..65335ae22a2d4e 100644
--- a/api/Screen.json
+++ b/api/Screen.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +211,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -248,7 +254,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -327,7 +335,8 @@
               "version_added": "1.0",
               "notes": "Starting with Samsung Internet 7.0 this property is no longer required to always return 24."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,7 +376,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -401,7 +411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -434,7 +445,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +478,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -506,7 +519,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -546,7 +560,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -586,7 +601,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -642,7 +658,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -684,7 +701,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -728,7 +746,8 @@
               "version_added": "1.0",
               "notes": "Starting with Samsung Internet 7.0 this property is no longer required to always return 24."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -761,7 +780,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -793,7 +813,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -833,7 +854,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -873,7 +895,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ScreenDetailed.json b/api/ScreenDetailed.json
index 6d634537c800b4..fe8836bce02cdf 100644
--- a/api/ScreenDetailed.json
+++ b/api/ScreenDetailed.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -242,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -278,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -314,7 +322,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ScreenDetails.json b/api/ScreenDetails.json
index 012220b828c3ac..c622b3bf3eefd1 100644
--- a/api/ScreenDetails.json
+++ b/api/ScreenDetails.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ScreenOrientation.json b/api/ScreenOrientation.json
index 0c803f423ffbaf..1e568d9785fc84 100644
--- a/api/ScreenOrientation.json
+++ b/api/ScreenOrientation.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +258,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ScriptProcessorNode.json b/api/ScriptProcessorNode.json
index fcee9817585650..6ab4f5111b6769 100644
--- a/api/ScriptProcessorNode.json
+++ b/api/ScriptProcessorNode.json
@@ -28,7 +28,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ScrollTimeline.json b/api/ScrollTimeline.json
index ee0c2172c81b59..9c46372816f23c 100644
--- a/api/ScrollTimeline.json
+++ b/api/ScrollTimeline.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SecurityPolicyViolationEvent.json b/api/SecurityPolicyViolationEvent.json
index 0ddc766b651a8f..13d20fdbdb0fc8 100644
--- a/api/SecurityPolicyViolationEvent.json
+++ b/api/SecurityPolicyViolationEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -204,7 +209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -276,7 +283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -312,7 +320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -348,7 +357,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,7 +394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -418,7 +429,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -454,7 +466,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -490,7 +503,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -526,7 +540,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Selection.json b/api/Selection.json
index b9f62794f2c308..9dbe7eb1d88258 100644
--- a/api/Selection.json
+++ b/api/Selection.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -152,7 +155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -192,7 +196,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -259,7 +265,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -298,7 +305,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +347,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -379,7 +388,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -420,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -460,7 +471,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -501,7 +513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -535,7 +548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -572,7 +586,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -612,7 +627,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -644,7 +660,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -685,7 +702,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -726,7 +744,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -766,7 +785,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -800,7 +820,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -832,7 +853,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -875,7 +897,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -915,7 +938,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -949,7 +973,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -991,7 +1016,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1033,7 +1059,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1085,7 +1112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1125,7 +1153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1161,7 +1190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1193,7 +1223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1231,7 +1262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1271,7 +1303,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1307,7 +1340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Sensor.json b/api/Sensor.json
index fdd1b212ddfc85..0b811a4a0cb2eb 100644
--- a/api/Sensor.json
+++ b/api/Sensor.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -162,7 +166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -231,7 +237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,7 +272,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,7 +307,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SensorErrorEvent.json b/api/SensorErrorEvent.json
index e7167b97a4dc37..842c4aa1193d30 100644
--- a/api/SensorErrorEvent.json
+++ b/api/SensorErrorEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Serial.json b/api/Serial.json
index 31134814ac40c9..59220f184f1133 100644
--- a/api/Serial.json
+++ b/api/Serial.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SerialPort.json b/api/SerialPort.json
index 3d44a08652d00e..d720f811b6a201 100644
--- a/api/SerialPort.json
+++ b/api/SerialPort.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -178,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -214,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -250,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -322,7 +330,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -358,7 +367,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -394,7 +404,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ServiceWorker.json b/api/ServiceWorker.json
index 1d3e7006326635..c22f238320f979 100644
--- a/api/ServiceWorker.json
+++ b/api/ServiceWorker.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -66,7 +69,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -103,7 +109,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -142,7 +151,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -178,7 +190,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -214,7 +229,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -251,7 +269,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/ServiceWorkerContainer.json b/api/ServiceWorkerContainer.json
index 236484d70f5934..99a15f556dc18f 100644
--- a/api/ServiceWorkerContainer.json
+++ b/api/ServiceWorkerContainer.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -62,7 +65,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -99,7 +105,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -135,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +181,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -215,6 +228,9 @@
             },
             "webview_android": {
               "version_added": "40"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -252,7 +268,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -306,7 +325,10 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -342,7 +364,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -378,7 +403,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -414,7 +442,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/ServiceWorkerGlobalScope.json b/api/ServiceWorkerGlobalScope.json
index e7a069be2ccb02..3eab7b0b52bbf2 100644
--- a/api/ServiceWorkerGlobalScope.json
+++ b/api/ServiceWorkerGlobalScope.json
@@ -31,7 +31,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -65,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +113,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -149,7 +156,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -189,7 +197,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -229,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -269,7 +279,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -306,7 +317,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -346,7 +358,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -383,7 +398,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -418,7 +434,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -452,7 +469,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -493,7 +511,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -534,7 +555,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -578,7 +602,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -618,7 +645,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -663,7 +693,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -707,7 +738,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -744,7 +776,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -784,7 +817,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -837,7 +871,11 @@
               "notes": "Notifications are supported in web apps saved to the home screen."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
+            }
           },
           "status": {
             "experimental": false,
@@ -888,7 +926,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -928,7 +967,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -962,7 +1004,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1002,7 +1047,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1016,6 +1064,9 @@
           "description": "<code>sync</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ServiceWorkerGlobalScope/sync_event",
           "spec_url": "https://wicg.github.io/background-sync/spec/#dom-serviceworkerglobalscope-onsync",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -1041,7 +1092,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ServiceWorkerRegistration.json b/api/ServiceWorkerRegistration.json
index 1dba7377cc8bb6..0752621c541517 100644
--- a/api/ServiceWorkerRegistration.json
+++ b/api/ServiceWorkerRegistration.json
@@ -30,7 +30,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -65,7 +68,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -104,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -181,6 +189,10 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/551446"
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -217,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -253,7 +266,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -291,7 +307,10 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -327,7 +346,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -361,7 +381,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -409,6 +430,10 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/421921"
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -445,7 +470,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -488,6 +516,10 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/421921"
+            },
+            "webview_ios": {
+              "version_added": false,
+              "notes": "Notifications are supported in web apps saved to the home screen."
             }
           },
           "status": {
@@ -524,7 +556,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -566,6 +599,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
@@ -603,7 +639,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -640,7 +677,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -677,7 +715,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -714,7 +753,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -754,7 +794,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -768,6 +809,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/sync",
           "spec_url": "https://wicg.github.io/background-sync/spec/#dom-serviceworkerregistration-sync",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -791,7 +835,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -827,7 +872,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -873,7 +921,10 @@
                 "Before Samsung Internet 5.0, this method always bypassed the browser cache. Starting with Samsung Internet 5.0, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago."
               ]
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -910,7 +961,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -946,7 +1000,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -982,7 +1039,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/ShadowRoot.json b/api/ShadowRoot.json
index 93f74b8d6fc12b..7f3a37a31ad6cf 100644
--- a/api/ShadowRoot.json
+++ b/api/ShadowRoot.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -61,7 +62,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +140,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +302,8 @@
               ]
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -363,7 +372,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -395,7 +405,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -432,7 +443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -466,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -503,7 +516,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -543,7 +557,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -582,7 +597,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -616,7 +632,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -653,7 +670,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -690,7 +708,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -724,7 +743,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SharedStorage.json b/api/SharedStorage.json
index f692f086cf4478..39d7ed7a5e6abd 100644
--- a/api/SharedStorage.json
+++ b/api/SharedStorage.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -160,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SharedStorageOperation.json b/api/SharedStorageOperation.json
index 7a4ee723bcef94..8c272bd55aac9e 100644
--- a/api/SharedStorageOperation.json
+++ b/api/SharedStorageOperation.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/api/SharedStorageRunOperation.json b/api/SharedStorageRunOperation.json
index c29831c95d2489..caf6350def041b 100644
--- a/api/SharedStorageRunOperation.json
+++ b/api/SharedStorageRunOperation.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SharedStorageSelectURLOperation.json b/api/SharedStorageSelectURLOperation.json
index 185b50852d03df..af7d6e79587872 100644
--- a/api/SharedStorageSelectURLOperation.json
+++ b/api/SharedStorageSelectURLOperation.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SharedStorageWorklet.json b/api/SharedStorageWorklet.json
index a83dc15e525227..8e6f4c9ecc6e17 100644
--- a/api/SharedStorageWorklet.json
+++ b/api/SharedStorageWorklet.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SharedStorageWorkletGlobalScope.json b/api/SharedStorageWorkletGlobalScope.json
index f3eed71062a9a8..308e772eff1bf2 100644
--- a/api/SharedStorageWorkletGlobalScope.json
+++ b/api/SharedStorageWorkletGlobalScope.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SharedWorker.json b/api/SharedWorker.json
index a28fa11bdd22b4..3aa9c6002afb58 100644
--- a/api/SharedWorker.json
+++ b/api/SharedWorker.json
@@ -52,7 +52,8 @@
             "version_added": "4.0",
             "version_removed": "5.0"
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "4.0",
               "version_removed": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +234,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -313,7 +319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -375,7 +382,8 @@
               "version_added": "4.0",
               "version_removed": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -435,7 +443,8 @@
               "version_added": "4.0",
               "version_removed": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SharedWorkerGlobalScope.json b/api/SharedWorkerGlobalScope.json
index e4b9f6fb271b13..614e86417623c1 100644
--- a/api/SharedWorkerGlobalScope.json
+++ b/api/SharedWorkerGlobalScope.json
@@ -48,7 +48,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -102,7 +103,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -164,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -219,7 +222,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SourceBuffer.json b/api/SourceBuffer.json
index 3dddf49b976fba..537366fa041fef 100644
--- a/api/SourceBuffer.json
+++ b/api/SourceBuffer.json
@@ -51,7 +51,10 @@
               "version_removed": "3.0"
             }
           ],
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -95,6 +98,9 @@
             },
             "webview_android": {
               "version_added": "4.4.3"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -127,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -196,7 +203,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -228,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -276,7 +287,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -308,7 +322,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -349,7 +364,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -396,7 +412,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -428,7 +447,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -476,7 +496,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -508,7 +531,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -570,7 +594,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -610,7 +637,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -658,7 +686,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -690,7 +721,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -729,7 +761,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -761,7 +796,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -830,7 +866,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -862,7 +901,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -910,7 +950,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -942,7 +985,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -990,7 +1034,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1022,7 +1069,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1063,7 +1111,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1101,7 +1150,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": true,
@@ -1148,7 +1200,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1180,7 +1235,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1249,7 +1305,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1281,7 +1340,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1350,7 +1410,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1382,7 +1445,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1451,7 +1515,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1483,7 +1550,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1531,7 +1599,10 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1563,7 +1634,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1625,7 +1697,10 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -1665,7 +1740,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/SourceBufferList.json b/api/SourceBufferList.json
index 3f750977ad49f2..21e502429a47e5 100644
--- a/api/SourceBufferList.json
+++ b/api/SourceBufferList.json
@@ -57,7 +57,8 @@
               "version_removed": "3.0"
             }
           ],
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -126,7 +127,8 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -208,7 +211,8 @@
             "samsunginternet_android": {
               "version_added": "3.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -240,7 +244,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -311,7 +316,8 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -343,7 +349,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/SpeechGrammar.json b/api/SpeechGrammar.json
index 175def35dbb2d1..644d47662175eb 100644
--- a/api/SpeechGrammar.json
+++ b/api/SpeechGrammar.json
@@ -36,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -80,7 +81,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -124,7 +126,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -168,7 +171,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SpeechGrammarList.json b/api/SpeechGrammarList.json
index 3499dbefec126c..3f6737474475fd 100644
--- a/api/SpeechGrammarList.json
+++ b/api/SpeechGrammarList.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -145,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -183,7 +187,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -221,7 +226,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/SpeechRecognition.json b/api/SpeechRecognition.json
index 15d29a0b53d6a2..3433f1007a372a 100644
--- a/api/SpeechRecognition.json
+++ b/api/SpeechRecognition.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             "webview_android": {
               "prefix": "webkit",
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +220,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -325,7 +333,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -359,7 +368,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -393,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -427,7 +438,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -465,7 +477,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -503,7 +516,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -541,7 +555,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -579,7 +594,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -617,7 +633,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -655,7 +672,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -689,7 +707,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -727,7 +746,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -761,7 +781,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechRecognitionAlternative.json b/api/SpeechRecognitionAlternative.json
index c8f55cde188465..34eae89ef3ee45 100644
--- a/api/SpeechRecognitionAlternative.json
+++ b/api/SpeechRecognitionAlternative.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechRecognitionErrorEvent.json b/api/SpeechRecognitionErrorEvent.json
index 6c6b4410c617e1..8985d4041fedcb 100644
--- a/api/SpeechRecognitionErrorEvent.json
+++ b/api/SpeechRecognitionErrorEvent.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -94,7 +96,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechRecognitionEvent.json b/api/SpeechRecognitionEvent.json
index 6e7e9bbeed5280..7079bc24df9dab 100644
--- a/api/SpeechRecognitionEvent.json
+++ b/api/SpeechRecognitionEvent.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechRecognitionResult.json b/api/SpeechRecognitionResult.json
index d4518ff15bf789..1a9900c668ef13 100644
--- a/api/SpeechRecognitionResult.json
+++ b/api/SpeechRecognitionResult.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechRecognitionResultList.json b/api/SpeechRecognitionResultList.json
index 9b9b2f449ee9df..5991288a7cd500 100644
--- a/api/SpeechRecognitionResultList.json
+++ b/api/SpeechRecognitionResultList.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechSynthesis.json b/api/SpeechSynthesis.json
index bf1fb22f7431ed..67ce167cc693ba 100644
--- a/api/SpeechSynthesis.json
+++ b/api/SpeechSynthesis.json
@@ -41,7 +41,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/487255"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -89,7 +90,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +140,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -192,7 +195,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +245,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -290,7 +295,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,7 +345,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -388,7 +395,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -437,7 +445,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -487,7 +496,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechSynthesisErrorEvent.json b/api/SpeechSynthesisErrorEvent.json
index e693ddae1f2ab7..3e52853ef2ebfb 100644
--- a/api/SpeechSynthesisErrorEvent.json
+++ b/api/SpeechSynthesisErrorEvent.json
@@ -38,7 +38,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/487255"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +126,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechSynthesisEvent.json b/api/SpeechSynthesisEvent.json
index 3caa8e31e2ec95..125ed3507e6075 100644
--- a/api/SpeechSynthesisEvent.json
+++ b/api/SpeechSynthesisEvent.json
@@ -41,7 +41,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/487255"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -83,7 +84,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,7 +134,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +177,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -223,7 +227,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +276,8 @@
               },
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -321,7 +327,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -370,7 +377,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechSynthesisUtterance.json b/api/SpeechSynthesisUtterance.json
index 50577763fe7bab..fbec728e51939c 100644
--- a/api/SpeechSynthesisUtterance.json
+++ b/api/SpeechSynthesisUtterance.json
@@ -41,7 +41,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/487255"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +144,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,7 +198,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +252,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -297,7 +302,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -350,7 +356,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -403,7 +410,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -452,7 +460,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,7 +510,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -554,7 +564,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -607,7 +618,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -656,7 +668,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -705,7 +718,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -754,7 +768,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SpeechSynthesisVoice.json b/api/SpeechSynthesisVoice.json
index 8fbcf339e7f365..fdc09cda92cd86 100644
--- a/api/SpeechSynthesisVoice.json
+++ b/api/SpeechSynthesisVoice.json
@@ -42,7 +42,8 @@
           "webview_android": {
             "version_added": false,
             "impl_url": "https://crbug.com/487255"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +141,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +191,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +241,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +291,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StaticRange.json b/api/StaticRange.json
index af6c95c46b534d..3b6a04d256743c 100644
--- a/api/StaticRange.json
+++ b/api/StaticRange.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -172,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StereoPannerNode.json b/api/StereoPannerNode.json
index 56b9f731cedb5f..a8aee675bd3e9d 100644
--- a/api/StereoPannerNode.json
+++ b/api/StereoPannerNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/StereoPannerNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#stereopannernode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "41"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -40,6 +44,9 @@
           "description": "<code>StereoPannerNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/StereoPannerNode/StereoPannerNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-stereopannernode-stereopannernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -61,7 +68,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,6 +82,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/StereoPannerNode/pan",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-stereopannernode-pan",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -97,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Storage.json b/api/Storage.json
index 0d4653181e1d7d..dab112209e043f 100644
--- a/api/Storage.json
+++ b/api/Storage.json
@@ -38,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -84,7 +85,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +133,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +181,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,7 +229,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +277,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -319,7 +325,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StorageAccessHandle.json b/api/StorageAccessHandle.json
index b54e395630c947..1126542c9b3312 100644
--- a/api/StorageAccessHandle.json
+++ b/api/StorageAccessHandle.json
@@ -29,7 +29,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -256,7 +262,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,7 +301,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +340,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -370,7 +379,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -408,7 +418,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -446,7 +457,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StorageBucket.json b/api/StorageBucket.json
index c39550fd34e50b..34f5e16779448b 100644
--- a/api/StorageBucket.json
+++ b/api/StorageBucket.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -242,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -278,7 +285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -314,7 +322,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -350,7 +359,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/StorageBucketManager.json b/api/StorageBucketManager.json
index 81e854388ac111..e78d7ca58bfdac 100644
--- a/api/StorageBucketManager.json
+++ b/api/StorageBucketManager.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/StorageEvent.json b/api/StorageEvent.json
index 9e2cd16d997b82..48b92180b8cf12 100644
--- a/api/StorageEvent.json
+++ b/api/StorageEvent.json
@@ -38,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -76,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +125,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +221,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -264,7 +269,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -311,7 +317,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -358,7 +365,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StorageManager.json b/api/StorageManager.json
index 9205655f7ba812..ed45e19e72372d 100644
--- a/api/StorageManager.json
+++ b/api/StorageManager.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -89,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -197,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StyleMedia.json b/api/StyleMedia.json
index 33090b7a59e089..fe2e80a3dd5e2e 100644
--- a/api/StyleMedia.json
+++ b/api/StyleMedia.json
@@ -28,7 +28,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StylePropertyMap.json b/api/StylePropertyMap.json
index 7f7d749965369a..a034612c069dc0 100644
--- a/api/StylePropertyMap.json
+++ b/api/StylePropertyMap.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StylePropertyMapReadOnly.json b/api/StylePropertyMapReadOnly.json
index a606082a8ef9c0..841d75e9b58184 100644
--- a/api/StylePropertyMapReadOnly.json
+++ b/api/StylePropertyMapReadOnly.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +131,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +167,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +203,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -232,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +274,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -301,7 +309,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +344,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StyleSheet.json b/api/StyleSheet.json
index 311e112f600599..b745750f1be71d 100644
--- a/api/StyleSheet.json
+++ b/api/StyleSheet.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -190,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -270,7 +276,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -310,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/StyleSheetList.json b/api/StyleSheetList.json
index fccdc43a521140..9092e223e49d25 100644
--- a/api/StyleSheetList.json
+++ b/api/StyleSheetList.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -110,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SubmitEvent.json b/api/SubmitEvent.json
index c50dde7a5e148e..eec550598b746b 100644
--- a/api/SubmitEvent.json
+++ b/api/SubmitEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SubtleCrypto.json b/api/SubtleCrypto.json
index 03741f90c53d96..f884db7bb73755 100644
--- a/api/SubtleCrypto.json
+++ b/api/SubtleCrypto.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto",
         "spec_url": "https://w3c.github.io/webcrypto/#subtlecrypto-interface",
+        "tags": [
+          "web-features:web-cryptography"
+        ],
         "support": {
           "chrome": {
             "version_added": "37"
@@ -40,7 +43,8 @@
           ],
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,6 +136,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/decrypt",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-decrypt",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -183,7 +192,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,6 +206,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveBits",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveBits",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -248,7 +261,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -261,6 +275,9 @@
             "description": "<code>X25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveBits",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#x25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -296,7 +313,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -310,6 +328,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "41"
@@ -354,7 +375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,6 +389,9 @@
             "description": "<code>AES</code> as <code>derivedKeyAlgorithm</code> option value",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
             "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveKey",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "41"
@@ -394,7 +419,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -408,6 +434,9 @@
             "description": "<code>HKDF</code> as <code>derivedKeyAlgorithm</code> option value",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
             "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveKey",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "41"
@@ -435,7 +464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -449,6 +479,9 @@
             "description": "<code>HMAC</code> as <code>derivedKeyAlgorithm</code> option value",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
             "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveKey",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "41"
@@ -476,7 +509,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -490,6 +524,9 @@
             "description": "<code>PBKDF2</code> as <code>derivedKeyAlgorithm</code> option value",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
             "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-deriveKey",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "41"
@@ -517,7 +554,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -531,6 +569,9 @@
             "description": "<code>X25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#x25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -566,7 +607,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -580,6 +622,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/digest",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-digest",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -619,7 +664,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -632,6 +678,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/encrypt",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-encrypt",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -685,7 +734,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -698,6 +748,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/exportKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-exportKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -758,7 +811,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -771,6 +825,9 @@
             "description": "<code>Ed25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/exportKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#ed25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -806,7 +863,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -820,6 +878,9 @@
             "description": "<code>X25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/exportKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#x25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -855,7 +916,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -869,6 +931,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-generateKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -925,7 +990,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -938,6 +1004,9 @@
             "description": "<code>Ed25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#ed25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -974,7 +1043,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -988,6 +1058,9 @@
             "description": "<code>X25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#x25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -1023,7 +1096,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1037,6 +1111,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/importKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-importKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -1100,7 +1177,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1113,6 +1191,9 @@
             "description": "<code>Ed25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/importKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#ed25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -1148,7 +1229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1162,6 +1244,9 @@
             "description": "<code>X25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/importKey",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#x25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -1197,7 +1282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1211,6 +1297,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/sign",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-sign",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -1251,7 +1340,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1264,6 +1354,9 @@
             "description": "<code>Ed25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/sign",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#ed25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -1299,7 +1392,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1313,6 +1407,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/unwrapKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-unwrapKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -1356,7 +1453,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1369,6 +1467,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/verify",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-verify",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -1417,7 +1518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1430,6 +1532,9 @@
             "description": "<code>Ed25519</code> algorithm",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/verify",
             "spec_url": "https://wicg.github.io/webcrypto-secure-curves/#ed25519",
+            "tags": [
+              "web-features:web-cryptography"
+            ],
             "support": {
               "chrome": {
                 "version_added": "113",
@@ -1465,7 +1570,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1479,6 +1585,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SubtleCrypto/wrapKey",
           "spec_url": "https://w3c.github.io/webcrypto/#SubtleCrypto-method-wrapKey",
+          "tags": [
+            "web-features:web-cryptography"
+          ],
           "support": {
             "chrome": {
               "version_added": "37"
@@ -1518,7 +1627,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SyncEvent.json b/api/SyncEvent.json
index 3bba660d348177..6467c80f3a46fd 100644
--- a/api/SyncEvent.json
+++ b/api/SyncEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncEvent",
         "spec_url": "https://wicg.github.io/background-sync/spec/#sync-event",
+        "tags": [
+          "web-features:background-sync"
+        ],
         "support": {
           "chrome": {
             "version_added": "49"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -38,6 +42,9 @@
           "description": "<code>SyncEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncEvent/SyncEvent",
           "spec_url": "https://wicg.github.io/background-sync/spec/#dom-syncevent-syncevent",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -59,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,6 +80,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncEvent/lastChance",
           "spec_url": "https://wicg.github.io/background-sync/spec/#ref-for-dom-syncevent-lastchance③",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -93,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,6 +118,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncEvent/tag",
           "spec_url": "https://wicg.github.io/background-sync/spec/#ref-for-dom-syncevent-tag",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -127,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/SyncManager.json b/api/SyncManager.json
index 31e5d8601b45a3..a21c697d4dca99 100644
--- a/api/SyncManager.json
+++ b/api/SyncManager.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncManager",
         "spec_url": "https://wicg.github.io/background-sync/spec/#sync-manager-interface",
+        "tags": [
+          "web-features:background-sync"
+        ],
         "support": {
           "chrome": {
             "version_added": "49"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,6 +88,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncManager/getTags",
           "spec_url": "https://wicg.github.io/background-sync/spec/#dom-syncmanager-gettags",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -104,7 +112,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/SyncManager/register",
           "spec_url": "https://wicg.github.io/background-sync/spec/#dom-syncmanager-register",
+          "tags": [
+            "web-features:background-sync"
+          ],
           "support": {
             "chrome": {
               "version_added": "49"
@@ -138,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TaskAttributionTiming.json b/api/TaskAttributionTiming.json
index e6a3e0bafc6d7e..84fcadadb59ad0 100644
--- a/api/TaskAttributionTiming.json
+++ b/api/TaskAttributionTiming.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/TaskController.json b/api/TaskController.json
index 2698e876bc0ee1..863cde32ca4d79 100644
--- a/api/TaskController.json
+++ b/api/TaskController.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +125,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TaskPriorityChangeEvent.json b/api/TaskPriorityChangeEvent.json
index 4e6e633cf2b51f..e8aa7865963a84 100644
--- a/api/TaskPriorityChangeEvent.json
+++ b/api/TaskPriorityChangeEvent.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +125,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TaskSignal.json b/api/TaskSignal.json
index d81c77f8d57099..29ba9f99e491a6 100644
--- a/api/TaskSignal.json
+++ b/api/TaskSignal.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -113,7 +115,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Text.json b/api/Text.json
index 84ea299fa4c048..a619108b5c5f72 100644
--- a/api/Text.json
+++ b/api/Text.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -193,7 +197,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "Before version 4.4, the <code>offset</code> parameter was optional."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextDecoder.json b/api/TextDecoder.json
index fe6d6a4629d9aa..45f11e4aadb1be 100644
--- a/api/TextDecoder.json
+++ b/api/TextDecoder.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -101,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -140,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +199,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -243,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +329,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextDecoderStream.json b/api/TextDecoderStream.json
index 46e421ed6e1bbe..e9ae3a524bcf04 100644
--- a/api/TextDecoderStream.json
+++ b/api/TextDecoderStream.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +246,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextEncoder.json b/api/TextEncoder.json
index 3abe8ecd357abb..1fd09902262408 100644
--- a/api/TextEncoder.json
+++ b/api/TextEncoder.json
@@ -39,7 +39,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -87,7 +88,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -126,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +253,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextEncoderStream.json b/api/TextEncoderStream.json
index 3fcbf2d642272f..48b8b89de4a9b1 100644
--- a/api/TextEncoderStream.json
+++ b/api/TextEncoderStream.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextEvent.json b/api/TextEvent.json
index e06508b35ce067..b2c4b414347a9b 100644
--- a/api/TextEvent.json
+++ b/api/TextEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextFormat.json b/api/TextFormat.json
index 46f6d1671e70f2..1d8d932fae3019 100644
--- a/api/TextFormat.json
+++ b/api/TextFormat.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -213,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/TextFormatUpdateEvent.json b/api/TextFormatUpdateEvent.json
index 3cae34499abf0b..6c2da60bf6d4c1 100644
--- a/api/TextFormatUpdateEvent.json
+++ b/api/TextFormatUpdateEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/TextMetrics.json b/api/TextMetrics.json
index 10272e7f84a1b9..bcd12d8bf4334b 100644
--- a/api/TextMetrics.json
+++ b/api/TextMetrics.json
@@ -5,7 +5,7 @@
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextMetrics",
         "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#textmetrics",
         "tags": [
-          "web-features:canvas-text"
+          "web-features:canvas-2d"
         ],
         "support": {
           "chrome": {
@@ -38,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +177,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -187,7 +192,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextMetrics/alphabeticBaseline",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-textmetrics-alphabeticbaseline-dev",
           "tags": [
-            "web-features:canvas-text-baselines"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -210,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -290,7 +297,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -324,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -358,7 +367,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +382,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextMetrics/hangingBaseline",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-textmetrics-hangingbaseline-dev",
           "tags": [
-            "web-features:canvas-text-baselines"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -395,7 +405,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -409,7 +420,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextMetrics/ideographicBaseline",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-textmetrics-ideographicbaseline-dev",
           "tags": [
-            "web-features:canvas-text-baselines"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -432,7 +443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -446,7 +458,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextMetrics/width",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#dom-textmetrics-width-dev",
           "tags": [
-            "web-features:canvas-text"
+            "web-features:canvas-2d"
           ],
           "support": {
             "chrome": {
@@ -477,7 +489,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextTrack.json b/api/TextTrack.json
index 278571f2696393..5e5dc35f095e13 100644
--- a/api/TextTrack.json
+++ b/api/TextTrack.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#texttrack",
+        "tags": [
+          "web-features:text-tracks"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -36,7 +39,8 @@
             "version_added": "7"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/activeCues",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-activecues-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -80,7 +87,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,6 +101,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/addCue",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-addcue-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -122,7 +133,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,6 +151,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-cuechange",
             "https://html.spec.whatwg.org/multipage/media.html#handler-texttrack-oncuechange"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -168,7 +183,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,6 +197,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/cues",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-cues-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -213,7 +232,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -226,6 +246,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/id",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-id-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "33"
@@ -249,7 +272,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,6 +286,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/inBandMetadataTrackDispatchType",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-inbandmetadatatrackdispatchtype-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": false,
@@ -287,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,6 +328,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/kind",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-kind-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -329,7 +360,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,6 +374,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/label",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-label-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -371,7 +406,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,6 +420,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/language",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-language-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -413,7 +452,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -426,6 +466,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/mode",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-mode-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -458,7 +501,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -471,6 +515,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/removeCue",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrack-removecue-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -500,7 +547,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -511,6 +559,7 @@
       },
       "sourceBuffer": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrack/sourceBuffer",
           "spec_url": "https://w3c.github.io/media-source/#dom-texttrack-sourcebuffer",
           "support": {
             "chrome": {
@@ -537,7 +586,8 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextTrackCue.json b/api/TextTrackCue.json
index 754f41c6d0bd9a..a96f208d28a0fc 100644
--- a/api/TextTrackCue.json
+++ b/api/TextTrackCue.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#texttrackcue",
+        "tags": [
+          "web-features:text-tracks"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -33,7 +36,8 @@
             "version_added": "7"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue/endTime",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-endtime",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -74,7 +81,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,6 +99,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-enter",
             "https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onenter"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -120,7 +131,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,6 +149,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-exit",
             "https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onexit"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -166,7 +181,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -179,6 +195,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue/id",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-id",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -208,7 +227,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,6 +241,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue/pauseOnExit",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-pauseonexit",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -250,7 +273,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,6 +287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue/startTime",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-starttime",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -292,7 +319,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,6 +333,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCue/track",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-track",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -334,7 +365,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextTrackCueList.json b/api/TextTrackCueList.json
index 664ea23ae047c5..84cb5582c0b5cf 100644
--- a/api/TextTrackCueList.json
+++ b/api/TextTrackCueList.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCueList",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#texttrackcuelist",
+        "tags": [
+          "web-features:text-tracks"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -43,6 +47,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCueList/getCueById",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcuelist-getcuebyid",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -70,7 +77,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,6 +91,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackCueList/length",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcuelist-length",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -110,7 +121,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextTrackList.json b/api/TextTrackList.json
index ae563fdc8fc76f..2ee77a32efa9cd 100644
--- a/api/TextTrackList.json
+++ b/api/TextTrackList.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackList",
         "spec_url": "https://html.spec.whatwg.org/multipage/media.html#text-track-api",
+        "tags": [
+          "web-features:text-tracks"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -33,7 +36,8 @@
             "version_added": "7"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -49,6 +53,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-addtrack",
             "https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -78,7 +85,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,6 +103,9 @@
             "https://html.spec.whatwg.org/multipage/media.html#event-media-change",
             "https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "33"
@@ -120,7 +131,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,6 +145,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackList/getTrackById",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttracklist-gettrackbyid-dev",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "33"
@@ -156,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,6 +185,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackList/length",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#dom-texttracklist-length",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -198,7 +217,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,11 +230,14 @@
       "removetrack_event": {
         "__compat": {
           "description": "<code>removetrack</code> event",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackList/removeTrack_event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TextTrackList/removetrack_event",
           "spec_url": [
             "https://html.spec.whatwg.org/multipage/media.html#event-media-removetrack",
             "https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack"
           ],
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "33"
@@ -256,7 +279,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TextUpdateEvent.json b/api/TextUpdateEvent.json
index 099b947829ee51..a75eccba67b5aa 100644
--- a/api/TextUpdateEvent.json
+++ b/api/TextUpdateEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -176,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -213,7 +218,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -250,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/TimeEvent.json b/api/TimeEvent.json
index 9a88f562580332..596d12d89d639b 100644
--- a/api/TimeEvent.json
+++ b/api/TimeEvent.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TimeRanges.json b/api/TimeRanges.json
index 7a2e07cbc5bad3..8e416ffc115566 100644
--- a/api/TimeRanges.json
+++ b/api/TimeRanges.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +118,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ToggleEvent.json b/api/ToggleEvent.json
index 01dfb1b11f582e..87772ec695ec15 100644
--- a/api/ToggleEvent.json
+++ b/api/ToggleEvent.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Touch.json b/api/Touch.json
index b611f5a110a9be..d3bd9c29be2e46 100644
--- a/api/Touch.json
+++ b/api/Touch.json
@@ -40,7 +40,8 @@
             "version_added": "≤3"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
               "version_added": "≤3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +117,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -150,7 +153,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -199,7 +203,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +253,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -304,7 +310,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -353,7 +360,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -402,7 +410,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -451,7 +460,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +517,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -563,7 +574,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -619,7 +631,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -668,7 +681,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -717,7 +731,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -766,7 +781,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -801,7 +817,8 @@
               "version_added": "10"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TouchEvent.json b/api/TouchEvent.json
index b402cd698852ac..06963f0d2f4ec5 100644
--- a/api/TouchEvent.json
+++ b/api/TouchEvent.json
@@ -36,7 +36,8 @@
             "version_added": "3.2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +168,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +214,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,7 +260,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,7 +306,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -345,7 +352,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -390,7 +398,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TouchList.json b/api/TouchList.json
index 4c57b1cb570b10..1697bb8920b9c7 100644
--- a/api/TouchList.json
+++ b/api/TouchList.json
@@ -40,7 +40,8 @@
             "version_added": "2"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -88,7 +89,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +139,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrackEvent.json b/api/TrackEvent.json
index c8c36846f6e45c..823f1232694460 100644
--- a/api/TrackEvent.json
+++ b/api/TrackEvent.json
@@ -33,7 +33,8 @@
             "version_added": "7"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
               "version_added": "7"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TransformStream.json b/api/TransformStream.json
index 04c8a2f97b21f0..4623cccea984db 100644
--- a/api/TransformStream.json
+++ b/api/TransformStream.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -161,7 +164,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TransformStreamDefaultController.json b/api/TransformStreamDefaultController.json
index 5280c584d62d3a..4081cc339e68d7 100644
--- a/api/TransformStreamDefaultController.json
+++ b/api/TransformStreamDefaultController.json
@@ -39,7 +39,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -158,7 +161,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -198,7 +202,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TransitionEvent.json b/api/TransitionEvent.json
index 118fa59b1f5af7..6ac2eac8b5e6a8 100644
--- a/api/TransitionEvent.json
+++ b/api/TransitionEvent.json
@@ -70,7 +70,8 @@
               "version_added": "≤37",
               "version_removed": "71"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -114,7 +115,8 @@
             "samsunginternet_android": {
               "version_added": "2.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -154,7 +156,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -194,7 +197,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -228,7 +232,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TreeWalker.json b/api/TreeWalker.json
index dc2381b7e72317..31ec3c4b69a312 100644
--- a/api/TreeWalker.json
+++ b/api/TreeWalker.json
@@ -35,7 +35,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +124,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -166,7 +169,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +214,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +259,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -298,7 +304,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +349,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -386,7 +394,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -430,7 +439,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -474,7 +484,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,7 +529,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrustedHTML.json b/api/TrustedHTML.json
index 38dd11f0d3f600..958fdf987821e6 100644
--- a/api/TrustedHTML.json
+++ b/api/TrustedHTML.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrustedScript.json b/api/TrustedScript.json
index 0bb6c6a7de5c92..6c9b37e76ce49b 100644
--- a/api/TrustedScript.json
+++ b/api/TrustedScript.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrustedScriptURL.json b/api/TrustedScriptURL.json
index 44e92ebdad5838..d640d4cb2c2722 100644
--- a/api/TrustedScriptURL.json
+++ b/api/TrustedScriptURL.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrustedTypePolicy.json b/api/TrustedTypePolicy.json
index 9242749f21e458..5954a1f5515fff 100644
--- a/api/TrustedTypePolicy.json
+++ b/api/TrustedTypePolicy.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/TrustedTypePolicyFactory.json b/api/TrustedTypePolicyFactory.json
index ddb5c557a512b4..dd183dce29d8a8 100644
--- a/api/TrustedTypePolicyFactory.json
+++ b/api/TrustedTypePolicyFactory.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -212,7 +217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +255,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -323,7 +331,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -360,7 +369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/UIEvent.json b/api/UIEvent.json
index fc168626dcd714..3b51aa490aaa17 100644
--- a/api/UIEvent.json
+++ b/api/UIEvent.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             },
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -193,7 +197,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -235,7 +240,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -304,7 +310,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/URL.json b/api/URL.json
index f8847724d312f4..61f631053d2d29 100644
--- a/api/URL.json
+++ b/api/URL.json
@@ -62,7 +62,8 @@
               "prefix": "webkit",
               "version_added": "4"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -121,7 +122,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -216,7 +219,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +262,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,7 +305,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +348,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,7 +391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -435,7 +443,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -473,7 +482,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -517,7 +527,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -560,7 +571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -602,7 +614,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -644,7 +657,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -688,7 +702,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -731,7 +746,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -781,7 +797,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -823,7 +840,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -867,7 +885,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -911,7 +930,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/URLPattern.json b/api/URLPattern.json
index c93e7d7ba3a939..1ff93ef537fcf2 100644
--- a/api/URLPattern.json
+++ b/api/URLPattern.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern",
         "spec_url": "https://urlpattern.spec.whatwg.org/#urlpattern",
+        "tags": [
+          "web-features:urlpattern"
+        ],
         "support": {
           "chrome": {
             "version_added": "95"
@@ -28,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -41,6 +45,9 @@
           "description": "<code>URLPattern()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/URLPattern",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-urlpattern",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -65,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -77,6 +85,9 @@
           "__compat": {
             "description": "<code>ignoreCase</code> option",
             "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpatternoptions-ignorecase",
+            "tags": [
+              "web-features:urlpattern"
+            ],
             "support": {
               "chrome": {
                 "version_added": "107"
@@ -101,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -115,6 +127,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/exec",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-exec",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -139,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -152,6 +168,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/hash",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-hash",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -176,7 +195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -188,6 +208,9 @@
       "hasRegExpGroups": {
         "__compat": {
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-hasregexpgroups",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "122"
@@ -209,7 +232,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -222,6 +246,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/hostname",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-hostname",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -246,7 +273,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -259,6 +287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/password",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-password",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -283,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,6 +328,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/pathname",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-pathname",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -320,7 +355,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -333,6 +369,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/port",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-port",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -357,7 +396,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -370,6 +410,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/protocol",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-protocol",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -394,7 +437,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -407,6 +451,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/search",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-search",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -431,7 +478,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -444,6 +492,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/test",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-test",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -468,7 +519,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -481,6 +533,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/URLPattern/username",
           "spec_url": "https://urlpattern.spec.whatwg.org/#dom-urlpattern-username",
+          "tags": [
+            "web-features:urlpattern"
+          ],
           "support": {
             "chrome": {
               "version_added": "95"
@@ -505,7 +560,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/URLSearchParams.json b/api/URLSearchParams.json
index 37be8d2ecdd85b..4e56560ff8ba7e 100644
--- a/api/URLSearchParams.json
+++ b/api/URLSearchParams.json
@@ -42,7 +42,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -84,7 +85,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +168,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -208,7 +212,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -300,7 +306,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -338,7 +345,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -381,7 +389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -423,7 +432,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -465,7 +475,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,7 +518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -549,7 +561,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -587,7 +600,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -630,7 +644,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -672,7 +687,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -718,7 +734,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -760,7 +777,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -802,7 +820,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -844,7 +863,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -886,7 +906,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/USB.json b/api/USB.json
index 963bc82ab7a7bc..c96d7d9571e93c 100644
--- a/api/USB.json
+++ b/api/USB.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -73,7 +74,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -116,7 +118,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -155,7 +158,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -194,7 +198,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBAlternateInterface.json b/api/USBAlternateInterface.json
index e3837a44eb3af4..2cc9be5776c90b 100644
--- a/api/USBAlternateInterface.json
+++ b/api/USBAlternateInterface.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -182,7 +186,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -220,7 +225,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -258,7 +264,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -296,7 +303,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBConfiguration.json b/api/USBConfiguration.json
index b77ed398d6e5b4..be1cce3f69fbab 100644
--- a/api/USBConfiguration.json
+++ b/api/USBConfiguration.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +111,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -148,7 +151,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -187,7 +191,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBConnectionEvent.json b/api/USBConnectionEvent.json
index 28df805cfb0749..fa869fd8e54006 100644
--- a/api/USBConnectionEvent.json
+++ b/api/USBConnectionEvent.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -70,7 +71,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -109,7 +111,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBDevice.json b/api/USBDevice.json
index 6eb68bb6c5c3a8..6c65501214a34a 100644
--- a/api/USBDevice.json
+++ b/api/USBDevice.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,7 +150,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -186,7 +190,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -225,7 +230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -264,7 +270,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -303,7 +310,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -342,7 +350,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -381,7 +390,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -420,7 +430,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -459,7 +470,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -498,7 +510,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -537,7 +550,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -576,7 +590,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -615,7 +630,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -654,7 +670,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -693,7 +710,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -732,7 +750,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -771,7 +790,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -782,7 +802,7 @@
       },
       "productId": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/USBDevice/productID",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/USBDevice/productId",
           "spec_url": "https://wicg.github.io/webusb/#ref-for-dom-usbdevice-productid",
           "tags": [
             "web-features:webusb"
@@ -810,7 +830,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -849,7 +870,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -888,7 +910,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -927,7 +950,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -966,7 +990,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1005,7 +1030,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1044,7 +1070,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1083,7 +1110,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1122,7 +1150,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1161,7 +1190,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1200,7 +1230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1239,7 +1270,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1250,7 +1282,7 @@
       },
       "vendorId": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/USBDevice/vendorID",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/USBDevice/vendorId",
           "spec_url": "https://wicg.github.io/webusb/#ref-for-dom-usbdevice-vendorid",
           "tags": [
             "web-features:webusb"
@@ -1278,7 +1310,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBEndpoint.json b/api/USBEndpoint.json
index e3b5cabd10cefe..fdadfbe31f21f0 100644
--- a/api/USBEndpoint.json
+++ b/api/USBEndpoint.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -182,7 +186,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -220,7 +225,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBInTransferResult.json b/api/USBInTransferResult.json
index 9e29384d1f018c..c6409664de77b0 100644
--- a/api/USBInTransferResult.json
+++ b/api/USBInTransferResult.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBInterface.json b/api/USBInterface.json
index 45f3ab5ca01d16..273efab04e1682 100644
--- a/api/USBInterface.json
+++ b/api/USBInterface.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -182,7 +186,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -220,7 +225,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBIsochronousInTransferPacket.json b/api/USBIsochronousInTransferPacket.json
index 7ac5f670b16698..7a245050e63ea5 100644
--- a/api/USBIsochronousInTransferPacket.json
+++ b/api/USBIsochronousInTransferPacket.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBIsochronousInTransferResult.json b/api/USBIsochronousInTransferResult.json
index 8e576022084445..592cc4716d5512 100644
--- a/api/USBIsochronousInTransferResult.json
+++ b/api/USBIsochronousInTransferResult.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBIsochronousOutTransferPacket.json b/api/USBIsochronousOutTransferPacket.json
index dbe88d771de1ce..eaf29212bcaa0b 100644
--- a/api/USBIsochronousOutTransferPacket.json
+++ b/api/USBIsochronousOutTransferPacket.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBIsochronousOutTransferResult.json b/api/USBIsochronousOutTransferResult.json
index 0fba86677e0573..9078c012df6166 100644
--- a/api/USBIsochronousOutTransferResult.json
+++ b/api/USBIsochronousOutTransferResult.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/USBOutTransferResult.json b/api/USBOutTransferResult.json
index 9effd5fda62705..74df6294291dbd 100644
--- a/api/USBOutTransferResult.json
+++ b/api/USBOutTransferResult.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": false,
             "notes": "WebView exposes this interface, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/UserActivation.json b/api/UserActivation.json
index dd700447f28c9f..6e6395fd4f767e 100644
--- a/api/UserActivation.json
+++ b/api/UserActivation.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +77,7 @@
       },
       "isActive": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/UserActivation/hasBeenActive",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/UserActivation/isActive",
           "spec_url": "https://html.spec.whatwg.org/multipage/interaction.html#dom-useractivation-isactive",
           "tags": [
             "web-features:user-activation"
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRDisplay.json b/api/VRDisplay.json
index 8a60c98212e544..c1b76853c0e8f5 100644
--- a/api/VRDisplay.json
+++ b/api/VRDisplay.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +175,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +237,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +299,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -356,7 +361,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -417,7 +423,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -478,7 +485,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -539,7 +547,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -600,7 +609,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -655,7 +665,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -716,7 +727,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -777,7 +789,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -838,7 +851,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -899,7 +913,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -960,7 +975,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1021,7 +1037,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1082,7 +1099,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1143,7 +1161,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1204,7 +1223,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRDisplayCapabilities.json b/api/VRDisplayCapabilities.json
index 3837eb9721a336..af59ac19592336 100644
--- a/api/VRDisplayCapabilities.json
+++ b/api/VRDisplayCapabilities.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +175,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +237,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +299,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -356,7 +361,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRDisplayEvent.json b/api/VRDisplayEvent.json
index e9d473539b240f..673f9eca8dea50 100644
--- a/api/VRDisplayEvent.json
+++ b/api/VRDisplayEvent.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -113,7 +114,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +176,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +238,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VREyeParameters.json b/api/VREyeParameters.json
index bcc0d12e1c0443..78606c286d9d13 100644
--- a/api/VREyeParameters.json
+++ b/api/VREyeParameters.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +287,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -344,7 +349,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -405,7 +411,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRFieldOfView.json b/api/VRFieldOfView.json
index 5304f6f8ef9f4c..13e16cb6e33e5a 100644
--- a/api/VRFieldOfView.json
+++ b/api/VRFieldOfView.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +175,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +237,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +299,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRFrameData.json b/api/VRFrameData.json
index d82dc2167fd5ba..67ca18a2348a5e 100644
--- a/api/VRFrameData.json
+++ b/api/VRFrameData.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -113,7 +114,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,7 +176,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -235,7 +238,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +300,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -357,7 +362,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -418,7 +424,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -479,7 +486,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRPose.json b/api/VRPose.json
index aa7c8200f06cea..a60d9211740d26 100644
--- a/api/VRPose.json
+++ b/api/VRPose.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +175,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +237,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,7 +299,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -356,7 +361,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -417,7 +423,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VRStageParameters.json b/api/VRStageParameters.json
index 9cd715fcaa5448..673ea028f6185d 100644
--- a/api/VRStageParameters.json
+++ b/api/VRStageParameters.json
@@ -52,7 +52,8 @@
             "version_added": "6.0",
             "notes": "Google Cardboard supported in Samsung Internet 7.0."
           },
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -112,7 +113,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -173,7 +175,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -234,7 +237,8 @@
               "version_added": "6.0",
               "notes": "Google Cardboard supported in Samsung Internet 7.0."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VTTCue.json b/api/VTTCue.json
index ad4f83bed00135..3b0ca431f991ce 100644
--- a/api/VTTCue.json
+++ b/api/VTTCue.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/VTTCue",
         "spec_url": "https://w3c.github.io/webvtt/#the-vttcue-interface",
+        "tags": [
+          "web-features:webvtt"
+        ],
         "support": {
           "chrome": {
             "version_added": "23"
@@ -33,7 +36,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +112,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/VTTCue/getCueAsHTML",
           "spec_url": "https://w3c.github.io/webvtt/#dom-vttcue-getcueashtml",
+          "tags": [
+            "web-features:webvtt"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -149,7 +158,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +199,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -227,7 +238,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -267,7 +279,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -305,7 +318,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,7 +353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -379,7 +394,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -419,7 +435,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -432,6 +449,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/VTTCue/text",
           "spec_url": "https://w3c.github.io/webvtt/#dom-vttcue-text",
+          "tags": [
+            "web-features:webvtt"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -461,7 +481,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -493,7 +514,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -530,7 +552,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VTTRegion.json b/api/VTTRegion.json
index c268474c273086..6e889dbec40c0e 100644
--- a/api/VTTRegion.json
+++ b/api/VTTRegion.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +136,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -169,7 +173,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -205,7 +210,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -277,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -313,7 +321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -349,7 +358,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ValidityState.json b/api/ValidityState.json
index 6388555bf569b6..4193c21196dc92 100644
--- a/api/ValidityState.json
+++ b/api/ValidityState.json
@@ -38,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -172,7 +175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -219,7 +223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +271,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -313,7 +319,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -364,7 +371,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -407,7 +415,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "67"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -454,7 +463,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -501,7 +511,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -548,7 +559,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoColorSpace.json b/api/VideoColorSpace.json
index dd21d6a535878f..fbd83f502ef759 100644
--- a/api/VideoColorSpace.json
+++ b/api/VideoColorSpace.json
@@ -14,11 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": "preview",
-            "partial_implementation": true,
-            "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -53,11 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,11 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,11 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,11 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -209,11 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -225,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,11 +254,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -264,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoDecoder.json b/api/VideoDecoder.json
index edd0f3544fa94e..3096a3192745ac 100644
--- a/api/VideoDecoder.json
+++ b/api/VideoDecoder.json
@@ -14,12 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": "preview",
-            "impl_url": "https://bugzil.la/1749045",
-            "partial_implementation": true,
-            "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -31,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,12 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -71,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,12 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -111,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,12 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -151,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,12 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -191,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,12 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -231,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,12 +255,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -272,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,12 +295,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -312,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -336,12 +336,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -353,7 +352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -376,12 +376,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -393,7 +392,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,12 +416,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749045",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -433,7 +432,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoEncoder.json b/api/VideoEncoder.json
index f96ddb3e634a01..1ed85515a0ce66 100644
--- a/api/VideoEncoder.json
+++ b/api/VideoEncoder.json
@@ -14,12 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": "preview",
-            "impl_url": "https://bugzil.la/1872733",
-            "partial_implementation": true,
-            "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -31,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,12 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -71,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,12 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -111,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,12 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -151,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -175,12 +175,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -192,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,12 +215,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -232,7 +231,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -255,12 +255,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -272,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -295,12 +295,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -312,7 +311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -336,12 +336,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -353,7 +352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -376,12 +376,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -393,7 +392,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,12 +416,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1872733",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -433,7 +432,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoFrame.json b/api/VideoFrame.json
index 000b08575116de..05bba9900e7f4e 100644
--- a/api/VideoFrame.json
+++ b/api/VideoFrame.json
@@ -14,12 +14,11 @@
           "chrome_android": "mirror",
           "edge": "mirror",
           "firefox": {
-            "version_added": "preview",
-            "impl_url": "https://bugzil.la/1749539",
-            "partial_implementation": true,
-            "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+            "version_added": "130"
+          },
+          "firefox_android": {
+            "version_added": false
           },
-          "firefox_android": "mirror",
           "ie": {
             "version_added": false
           },
@@ -31,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -54,12 +54,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -71,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,12 +94,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -111,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,12 +134,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -151,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -174,12 +174,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -191,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -214,12 +214,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -231,7 +230,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,12 +254,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -271,7 +270,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,12 +294,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -311,7 +310,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,12 +334,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -351,7 +350,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -374,12 +374,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -391,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,12 +414,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -431,7 +430,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -454,12 +454,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -471,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -494,12 +494,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -511,7 +510,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -534,12 +534,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -551,7 +550,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,12 +574,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -591,7 +590,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -614,12 +614,11 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1749539",
-              "partial_implementation": true,
-              "notes": "Only supported on Linux, see <a href='https://bugzil.la/1749047'>bug 1749047</a>."
+              "version_added": "130"
+            },
+            "firefox_android": {
+              "version_added": false
             },
-            "firefox_android": "mirror",
             "ie": {
               "version_added": false
             },
@@ -631,7 +630,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoPlaybackQuality.json b/api/VideoPlaybackQuality.json
index e0ecd2332ff33b..ecd9c65c8bfeef 100644
--- a/api/VideoPlaybackQuality.json
+++ b/api/VideoPlaybackQuality.json
@@ -32,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
               "version_added": "12.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +114,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -153,7 +156,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -192,7 +196,8 @@
               "version_added": "12.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -233,7 +238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoTrack.json b/api/VideoTrack.json
index 40a264adf73eee..c29a29dae01c5d 100644
--- a/api/VideoTrack.json
+++ b/api/VideoTrack.json
@@ -57,7 +57,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -122,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +257,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,7 +324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -386,7 +391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -446,7 +452,8 @@
               "notes": "Exposed in Mobile Safari on iPad but not on iPhone."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/VideoTrackGenerator.json b/api/VideoTrackGenerator.json
index cdfcd06d44e781..b2dd105b5e704c 100644
--- a/api/VideoTrackGenerator.json
+++ b/api/VideoTrackGenerator.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -156,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/VideoTrackList.json b/api/VideoTrackList.json
index fd0c48bb9c090a..6868868d7b5973 100644
--- a/api/VideoTrackList.json
+++ b/api/VideoTrackList.json
@@ -57,7 +57,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -126,7 +127,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +198,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -262,7 +265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -328,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -464,7 +470,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ViewTimeline.json b/api/ViewTimeline.json
index b8551e248cda02..53eea7715ed8ef 100644
--- a/api/ViewTimeline.json
+++ b/api/ViewTimeline.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -69,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -186,7 +190,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/ViewTransition.json b/api/ViewTransition.json
index 700a5c8ee10465..28d798ccc7d9fa 100644
--- a/api/ViewTransition.json
+++ b/api/ViewTransition.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +103,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,11 +171,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/ViewTransitionTypeSet.json b/api/ViewTransitionTypeSet.json
index 59e31fc0e8fde2..35a4c8faebb005 100644
--- a/api/ViewTransitionTypeSet.json
+++ b/api/ViewTransitionTypeSet.json
@@ -20,11 +20,12 @@
           "opera": "mirror",
           "opera_android": "mirror",
           "safari": {
-            "version_added": false
+            "version_added": "preview"
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -51,11 +52,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -83,11 +85,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -115,11 +118,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -147,11 +151,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,11 +184,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -211,11 +217,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -243,11 +250,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -275,11 +283,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -307,11 +316,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -340,11 +350,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/VirtualKeyboard.json b/api/VirtualKeyboard.json
index 3a6be4ad895fe4..3bf495f1cd724c 100644
--- a/api/VirtualKeyboard.json
+++ b/api/VirtualKeyboard.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/VisibilityStateEntry.json b/api/VisibilityStateEntry.json
index 0aa7a953e4d46f..c01ef3be5cb744 100644
--- a/api/VisibilityStateEntry.json
+++ b/api/VisibilityStateEntry.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -57,7 +58,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -90,7 +92,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -123,7 +126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -156,7 +160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/VisualViewport.json b/api/VisualViewport.json
index bf7c327bcd9f00..7a7be4c6d5794a 100644
--- a/api/VisualViewport.json
+++ b/api/VisualViewport.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -185,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -224,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +281,8 @@
             "samsunginternet_android": {
               "version_added": "8.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -314,7 +321,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +373,8 @@
             "samsunginternet_android": {
               "version_added": "8.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -377,6 +386,7 @@
       "scrollend_event": {
         "__compat": {
           "description": "<code>scrollend</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/VisualViewport/scrollend_event",
           "spec_url": "https://drafts.csswg.org/cssom-view/#eventdef-document-scrollend",
           "tags": [
             "web-features:scrollend"
@@ -411,7 +421,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -450,7 +461,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WEBGL_color_buffer_float.json b/api/WEBGL_color_buffer_float.json
index acb552a04c488e..17e08cbbd18df8 100644
--- a/api/WEBGL_color_buffer_float.json
+++ b/api/WEBGL_color_buffer_float.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_color_buffer_float",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_color_buffer_float/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "63"
@@ -29,7 +32,8 @@
             "version_added": "15"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_compressed_texture_astc.json b/api/WEBGL_compressed_texture_astc.json
index e5b2cf4fa59c86..a8bf91da79314c 100644
--- a/api/WEBGL_compressed_texture_astc.json
+++ b/api/WEBGL_compressed_texture_astc.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_astc",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_astc/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -37,6 +41,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_astc/getSupportedProfiles",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_astc/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -58,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WEBGL_compressed_texture_etc.json b/api/WEBGL_compressed_texture_etc.json
index 6fa4b7bdbf3308..35d11c6d38dc68 100644
--- a/api/WEBGL_compressed_texture_etc.json
+++ b/api/WEBGL_compressed_texture_etc.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_etc",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_etc/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "63"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_compressed_texture_etc1.json b/api/WEBGL_compressed_texture_etc1.json
index cc0745f2c0a40f..f4f183548b4cff 100644
--- a/api/WEBGL_compressed_texture_etc1.json
+++ b/api/WEBGL_compressed_texture_etc1.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_etc1",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_etc1/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "49"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_compressed_texture_pvrtc.json b/api/WEBGL_compressed_texture_pvrtc.json
index c7bd59085f1f68..cce45ebd26923d 100644
--- a/api/WEBGL_compressed_texture_pvrtc.json
+++ b/api/WEBGL_compressed_texture_pvrtc.json
@@ -6,7 +6,7 @@
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_pvrtc/",
         "support": {
           "chrome": {
-            "version_added": false
+            "version_added": "128"
           },
           "chrome_android": {
             "version_added": "28"
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_compressed_texture_s3tc.json b/api/WEBGL_compressed_texture_s3tc.json
index 189e1440d47125..fc00913df67f85 100644
--- a/api/WEBGL_compressed_texture_s3tc.json
+++ b/api/WEBGL_compressed_texture_s3tc.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_s3tc",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_s3tc/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": [
             {
@@ -47,7 +50,8 @@
             "version_added": false
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_compressed_texture_s3tc_srgb.json b/api/WEBGL_compressed_texture_s3tc_srgb.json
index 4f4ff336159482..6cfde66dfb7aec 100644
--- a/api/WEBGL_compressed_texture_s3tc_srgb.json
+++ b/api/WEBGL_compressed_texture_s3tc_srgb.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_compressed_texture_s3tc_srgb",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_s3tc_srgb/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "60"
@@ -29,7 +32,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_debug_renderer_info.json b/api/WEBGL_debug_renderer_info.json
index 88fb50ee1d7104..4358352c6f1f8c 100644
--- a/api/WEBGL_debug_renderer_info.json
+++ b/api/WEBGL_debug_renderer_info.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_debug_renderer_info",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_debug_renderer_info/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "33"
@@ -30,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_debug_shaders.json b/api/WEBGL_debug_shaders.json
index 7e729c8490fa3b..dd8526827cb27f 100644
--- a/api/WEBGL_debug_shaders.json
+++ b/api/WEBGL_debug_shaders.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_debug_shaders",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_debug_shaders/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "47"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -37,6 +41,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_debug_shaders/getTranslatedShaderSource",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_debug_shaders/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "47"
@@ -58,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WEBGL_depth_texture.json b/api/WEBGL_depth_texture.json
index ea80fd46eb6314..8528a4734d1748 100644
--- a/api/WEBGL_depth_texture.json
+++ b/api/WEBGL_depth_texture.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_depth_texture",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_depth_texture/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": [
             {
@@ -40,7 +43,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WEBGL_draw_buffers.json b/api/WEBGL_draw_buffers.json
index 8093459a089c17..c15e7fe60eba76 100644
--- a/api/WEBGL_draw_buffers.json
+++ b/api/WEBGL_draw_buffers.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_draw_buffers",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_draw_buffers/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "36"
@@ -33,7 +36,8 @@
             "version_added": "15"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -45,6 +49,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_draw_buffers/drawBuffersWEBGL",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_draw_buffers/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "36"
@@ -74,7 +81,8 @@
               "version_added": "15"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WEBGL_lose_context.json b/api/WEBGL_lose_context.json
index f6d8475e0cd9fc..dec148ff4d61a8 100644
--- a/api/WEBGL_lose_context.json
+++ b/api/WEBGL_lose_context.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_lose_context",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_lose_context/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": [
             {
@@ -48,7 +51,8 @@
               "prefix": "WEBKIT_",
               "version_added": "≤37"
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,6 +64,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_lose_context/loseContext",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_lose_context/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "26"
@@ -90,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,6 +111,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_lose_context/restoreContext",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_lose_context/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "26"
@@ -133,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WEBGL_multi_draw.json b/api/WEBGL_multi_draw.json
index ffda7143e58517..10625effe27c80 100644
--- a/api/WEBGL_multi_draw.json
+++ b/api/WEBGL_multi_draw.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_multi_draw",
         "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_multi_draw/",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "86"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_multi_draw/multiDrawArraysInstancedWEBGL",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_multi_draw/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_multi_draw/multiDrawArraysWEBGL",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_multi_draw/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -98,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,6 +123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_multi_draw/multiDrawElementsInstancedWEBGL",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_multi_draw/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -134,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,6 +163,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WEBGL_multi_draw/multiDrawElementsWEBGL",
           "spec_url": "https://registry.khronos.org/webgl/extensions/WEBGL_multi_draw/",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -170,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WGSLLanguageFeatures.json b/api/WGSLLanguageFeatures.json
index 91f7b8273cb8e0..947fb584404233 100644
--- a/api/WGSLLanguageFeatures.json
+++ b/api/WGSLLanguageFeatures.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -106,7 +108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -182,7 +186,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -220,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -258,7 +264,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -297,7 +304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WakeLock.json b/api/WakeLock.json
index f73e32635b73e0..9f7ce274152d54 100644
--- a/api/WakeLock.json
+++ b/api/WakeLock.json
@@ -32,7 +32,8 @@
             "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WakeLockSentinel.json b/api/WakeLockSentinel.json
index 27d4df26d734d6..b812d0b7e79f26 100644
--- a/api/WakeLockSentinel.json
+++ b/api/WakeLockSentinel.json
@@ -32,7 +32,8 @@
             "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -72,7 +73,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +116,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
               "notes": "Does not work in standalone Home Screen Web Apps. See <a href='https://webkit.org/b/254545#c32'>bug 254545</a>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WaveShaperNode.json b/api/WaveShaperNode.json
index 7ea30109ddcf8c..7528ba86766234 100644
--- a/api/WaveShaperNode.json
+++ b/api/WaveShaperNode.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WaveShaperNode",
         "spec_url": "https://webaudio.github.io/web-audio-api/#WaveShaperNode",
+        "tags": [
+          "web-features:web-audio"
+        ],
         "support": {
           "chrome": {
             "version_added": "15"
@@ -29,7 +32,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -42,6 +46,9 @@
           "description": "<code>WaveShaperNode()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WaveShaperNode/WaveShaperNode",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-waveshapernode-waveshapernode",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "55"
@@ -63,7 +70,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,6 +84,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WaveShaperNode/curve",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-waveshapernode-curve",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -101,7 +112,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,6 +126,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WaveShaperNode/oversample",
           "spec_url": "https://webaudio.github.io/web-audio-api/#dom-waveshapernode-oversample",
+          "tags": [
+            "web-features:web-audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "29"
@@ -139,7 +154,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGL2RenderingContext.json b/api/WebGL2RenderingContext.json
index 13a06407e86867..81425df754cb47 100644
--- a/api/WebGL2RenderingContext.json
+++ b/api/WebGL2RenderingContext.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -39,6 +43,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/activeTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -62,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,6 +83,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/attachShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -98,7 +109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -111,6 +123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/beginQuery",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -134,7 +149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,6 +163,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/beginTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -170,7 +189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -183,6 +203,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindAttribLocation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -206,7 +229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -222,6 +246,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -245,7 +272,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,6 +286,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/bindBufferBase",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -281,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -294,6 +326,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/bindBufferRange",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -317,7 +352,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -333,6 +369,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -356,7 +395,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -369,6 +409,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -392,7 +435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -405,6 +449,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/bindSampler",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -428,7 +475,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -444,6 +492,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -467,7 +518,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -480,6 +532,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/bindTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -503,7 +558,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -516,6 +572,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/bindVertexArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.17",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -539,7 +598,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -552,6 +612,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendColor",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -575,7 +638,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -588,6 +652,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -611,7 +678,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -624,6 +692,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquationSeparate",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -647,7 +718,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -660,6 +732,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFunc",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -683,7 +758,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -696,6 +772,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFuncSeparate",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -719,7 +798,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -732,6 +812,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/blitFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -755,7 +838,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -768,6 +852,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bufferData",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -791,7 +878,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -823,7 +911,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -837,6 +926,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bufferSubData",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -860,7 +952,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -892,7 +985,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -906,6 +1000,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/canvas",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-canvas",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -929,7 +1026,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -945,6 +1043,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -968,7 +1069,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -981,6 +1083,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clear",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1004,7 +1109,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1017,6 +1123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/clearBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1040,7 +1149,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1053,6 +1163,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/clearBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1076,7 +1189,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1108,7 +1222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -1122,6 +1237,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/clearBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1145,7 +1263,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1177,7 +1296,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
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@@ -1191,6 +1311,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/clearBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1214,7 +1337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1246,7 +1370,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -1260,6 +1385,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearColor",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1283,7 +1411,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1296,6 +1425,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearDepth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1319,7 +1451,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1332,6 +1465,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearStencil",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1355,7 +1491,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1368,6 +1505,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/clientWaitSync",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1391,7 +1531,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1404,6 +1545,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/colorMask",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1427,7 +1571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1440,6 +1585,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1463,7 +1611,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1476,6 +1625,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compressedTexImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#COMPRESSEDTEXIMAGE2D",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1499,7 +1651,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1531,7 +1684,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -1545,6 +1699,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compressedTexImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1568,7 +1725,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1600,7 +1758,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -1614,6 +1773,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compressedTexSubImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#COMPRESSEDTEXSUBIMAGE2D",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1637,7 +1799,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1669,7 +1832,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -1683,6 +1847,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/compressedTexSubImage3D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1706,7 +1873,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1719,6 +1887,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/copyBufferSubData",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1742,7 +1913,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1755,6 +1927,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1778,7 +1953,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1791,6 +1967,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexSubImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1814,7 +1993,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1827,6 +2007,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/copyTexSubImage3D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1850,7 +2033,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1863,6 +2047,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1886,7 +2073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1899,6 +2087,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1922,7 +2113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1935,6 +2127,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1958,7 +2153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -1971,6 +2167,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/createQuery",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -1994,7 +2193,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2007,6 +2207,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2030,7 +2233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2043,6 +2247,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/createSampler",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2066,7 +2273,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2079,6 +2287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2102,7 +2313,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2115,6 +2327,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2138,7 +2353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2151,6 +2367,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/createTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2174,7 +2393,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2187,6 +2407,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/createVertexArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.17",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2210,7 +2433,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2223,6 +2447,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/cullFace",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2246,7 +2473,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2259,6 +2487,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -2282,7 +2513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2295,6 +2527,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -2318,7 +2553,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -2331,6 +2567,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2354,7 +2593,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2367,6 +2607,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/deleteQuery",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2390,7 +2633,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2403,6 +2647,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2426,7 +2673,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2439,6 +2687,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/deleteSampler",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2462,7 +2713,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2475,6 +2727,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2498,7 +2753,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2511,6 +2767,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/deleteSync",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2534,7 +2793,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2547,6 +2807,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2570,7 +2833,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2583,6 +2847,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/deleteTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2606,7 +2873,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2619,6 +2887,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/deleteVertexArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.17",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2642,7 +2913,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2655,6 +2927,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthFunc",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2678,7 +2953,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2691,6 +2967,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthMask",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2714,7 +2993,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -2727,6 +3007,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthRange",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2750,7 +3033,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -2763,6 +3047,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/detachShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2786,7 +3073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2799,6 +3087,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disable",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2822,7 +3113,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2835,6 +3127,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disableVertexAttribArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2858,7 +3153,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2871,6 +3167,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawArrays",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2894,7 +3193,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2907,6 +3207,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/drawArraysInstanced",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2930,7 +3233,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2943,6 +3247,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/drawBuffers",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -2966,7 +3273,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -2979,6 +3287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawElements",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3002,7 +3313,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3015,6 +3327,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/drawElementsInstanced",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3038,7 +3353,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3051,6 +3367,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferColorSpace",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferColorSpace",
+          "tags": [
+            "web-features:webgl2-color-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "104"
@@ -3058,7 +3377,10 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "127"
+              "version_added": "127",
+              "version_removed": "130",
+              "partial_implementation": true,
+              "notes": "Accidental early exposure with no functionality."
             },
             "firefox_android": "mirror",
             "ie": {
@@ -3072,7 +3394,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3084,6 +3407,9 @@
       "drawingBufferFormat": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.1",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "122"
@@ -3105,7 +3431,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3118,6 +3445,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferHeight",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferHeight",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3141,7 +3471,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3153,6 +3484,9 @@
       "drawingBufferStorage": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#2.2",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "122"
@@ -3174,7 +3508,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3187,6 +3522,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferWidth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferWidth",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3210,7 +3548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3223,6 +3562,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/drawRangeElements",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3246,7 +3588,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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             "experimental": false,
@@ -3259,6 +3602,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enable",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3282,7 +3628,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3295,6 +3642,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enableVertexAttribArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3318,7 +3668,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3331,6 +3682,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/endQuery",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3354,7 +3708,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -3367,6 +3722,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/endTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3390,7 +3748,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3403,6 +3762,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/fenceSync",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3426,7 +3788,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3439,6 +3802,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/finish",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -3462,7 +3828,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3475,6 +3842,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/flush",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -3498,7 +3868,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3511,6 +3882,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -3534,7 +3908,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3547,6 +3922,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -3570,7 +3948,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3583,6 +3962,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -3606,7 +3988,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3619,6 +4002,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -3642,7 +4028,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3655,6 +4042,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -3678,7 +4068,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3691,6 +4082,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -3714,7 +4108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3727,6 +4122,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -3750,7 +4148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3763,6 +4162,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -3786,7 +4188,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -3799,6 +4202,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -3822,7 +4228,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3835,6 +4242,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -3858,7 +4268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3871,6 +4282,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -3894,7 +4308,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3907,6 +4322,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -3930,7 +4348,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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           },
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@@ -3946,6 +4365,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.3"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -3969,7 +4391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -3982,6 +4405,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -4005,7 +4431,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4037,7 +4464,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -4051,6 +4479,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.2",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -4074,7 +4505,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4087,6 +4519,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4110,7 +4545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4123,6 +4559,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4146,7 +4585,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4159,6 +4599,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/getFragDataLocation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.7",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4182,7 +4625,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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           },
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@@ -4198,6 +4642,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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@@ -4221,7 +4668,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4234,6 +4682,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/getIndexedParameter",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4257,7 +4708,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4270,6 +4722,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4293,7 +4748,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4309,6 +4765,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4332,7 +4791,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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           },
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@@ -4345,6 +4805,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4368,7 +4831,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4384,6 +4848,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.7"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4407,7 +4874,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4420,6 +4888,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4443,7 +4914,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4456,6 +4928,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/getQueryParameter",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4479,7 +4954,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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           },
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@@ -4495,6 +4971,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4518,7 +4997,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4531,6 +5011,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/getSamplerParameter",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4554,7 +5037,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4567,6 +5051,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderInfoLog",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4590,7 +5077,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4603,6 +5091,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4626,7 +5117,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4639,6 +5131,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4662,7 +5157,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -4675,6 +5171,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
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             "chrome": {
               "version_added": "56"
@@ -4698,7 +5197,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4711,6 +5211,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4734,7 +5237,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4747,6 +5251,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -4770,7 +5277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4786,6 +5294,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4809,7 +5320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4822,6 +5334,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4845,7 +5360,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4861,6 +5377,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4884,7 +5403,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4897,6 +5417,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4920,7 +5443,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4933,6 +5457,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4956,7 +5483,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -4969,6 +5497,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -4992,7 +5523,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5008,6 +5540,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5031,7 +5566,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5044,6 +5580,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5067,7 +5606,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5080,6 +5620,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5103,7 +5646,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5116,6 +5660,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/invalidateFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5139,7 +5686,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5152,6 +5700,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5175,7 +5726,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5188,6 +5740,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5211,7 +5766,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5224,6 +5780,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isContextLost",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5247,7 +5806,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5263,6 +5823,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5286,7 +5849,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5299,6 +5863,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -5322,7 +5889,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5335,6 +5903,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5358,7 +5929,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5371,6 +5943,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/isQuery",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5394,7 +5969,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5407,6 +5983,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5430,7 +6009,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5443,6 +6023,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/isSampler",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5466,7 +6049,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5479,6 +6063,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5502,7 +6089,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5515,6 +6103,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/isSync",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5538,7 +6129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5551,6 +6143,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5574,7 +6169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5587,6 +6183,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/isTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5610,7 +6209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5623,6 +6223,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/isVertexArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.17",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5646,7 +6249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5658,6 +6262,9 @@
       "lineWidth": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5681,7 +6288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5694,6 +6302,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/linkProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5717,7 +6328,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5755,7 +6367,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -5768,6 +6381,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/pauseTransformFeedback",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5791,7 +6407,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5808,6 +6425,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#PIXEL_STORAGE_PARAMETERS",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5831,7 +6451,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5844,6 +6465,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/polygonOffset",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -5867,7 +6491,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -5880,6 +6505,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -5903,7 +6531,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -5916,6 +6545,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.12",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -5939,7 +6571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -5971,7 +6604,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
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@@ -5988,6 +6622,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6011,7 +6648,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6024,6 +6662,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6047,7 +6688,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6060,6 +6702,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6083,7 +6728,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6096,6 +6742,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -6119,7 +6768,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6132,6 +6782,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -6155,7 +6808,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6168,6 +6822,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.13",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6191,7 +6848,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6204,6 +6862,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6227,7 +6888,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6240,6 +6902,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -6263,7 +6928,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6276,6 +6942,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6299,7 +6968,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -6312,6 +6982,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -6335,7 +7008,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6348,6 +7022,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6371,7 +7048,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6384,6 +7062,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -6407,7 +7088,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6420,6 +7102,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6443,7 +7128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6456,6 +7142,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6479,7 +7168,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6495,6 +7185,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6518,7 +7211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6531,6 +7225,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6554,7 +7251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6586,7 +7284,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -6603,6 +7302,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6626,7 +7328,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6642,6 +7345,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6665,7 +7371,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6678,6 +7385,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6701,7 +7411,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6714,6 +7425,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6737,7 +7451,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6753,6 +7468,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#TEXSUBIMAGE2D",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6776,7 +7494,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -6789,6 +7508,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6812,7 +7534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -6844,7 +7567,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -6858,6 +7582,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.15",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6881,7 +7608,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -6894,6 +7622,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6917,7 +7648,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -6930,6 +7662,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -6953,7 +7688,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -6966,6 +7702,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -6989,7 +7728,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7002,6 +7742,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -7025,7 +7768,8 @@
             },
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7038,6 +7782,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -7061,7 +7808,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7074,6 +7822,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7097,7 +7848,8 @@
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-            "webview_android": "mirror"
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@@ -7110,6 +7862,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+          ],
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@@ -7133,7 +7888,8 @@
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             "samsunginternet_android": "mirror",
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+            "webview_android": "mirror",
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@@ -7146,6 +7902,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+            "web-features:webgl2"
+          ],
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@@ -7169,7 +7928,8 @@
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             "samsunginternet_android": "mirror",
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+            "webview_android": "mirror",
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@@ -7182,6 +7942,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+          ],
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@@ -7205,7 +7968,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -7218,6 +7982,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+            "web-features:webgl2"
+          ],
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@@ -7241,7 +8008,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -7254,6 +8022,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7277,7 +8048,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -7290,6 +8062,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
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+            "web-features:webgl2"
+          ],
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@@ -7313,7 +8088,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -7326,6 +8102,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7349,7 +8128,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7362,6 +8142,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7385,7 +8168,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7398,6 +8182,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7421,7 +8208,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7434,6 +8222,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7457,7 +8248,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7470,6 +8262,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7493,7 +8288,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7506,6 +8302,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7529,7 +8328,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7542,6 +8342,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7565,7 +8368,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7578,6 +8382,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+          ],
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@@ -7601,7 +8408,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7614,6 +8422,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
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+            "web-features:webgl2"
+          ],
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@@ -7637,7 +8448,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7650,6 +8462,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7673,7 +8488,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7686,6 +8502,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7709,7 +8528,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7722,6 +8542,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7745,7 +8568,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7758,6 +8582,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.16",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7781,7 +8608,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7794,6 +8622,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7817,7 +8648,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7849,7 +8681,8 @@
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               "samsunginternet_android": "mirror",
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@@ -7863,6 +8696,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7886,7 +8722,8 @@
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             "samsunginternet_android": "mirror",
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@@ -7918,7 +8755,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -7932,6 +8770,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -7955,7 +8796,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -7987,7 +8829,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -8001,6 +8844,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -8024,7 +8870,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8056,7 +8903,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -8070,6 +8918,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -8093,7 +8944,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8125,7 +8977,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -8139,6 +8992,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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               "version_added": "56"
@@ -8162,7 +9018,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8194,7 +9051,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -8208,6 +9066,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -8231,7 +9092,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8263,7 +9125,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -8277,6 +9140,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
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@@ -8300,7 +9166,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8332,7 +9199,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
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@@ -8346,6 +9214,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
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               "version_added": "56"
@@ -8369,7 +9240,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -8401,7 +9273,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -8414,6 +9287,9 @@
       "unpackColorSpace": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-unpackColorSpace",
+          "tags": [
+            "web-features:webgl2-color-management"
+          ],
           "support": {
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@@ -8435,7 +9311,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -8448,6 +9325,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/useProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8471,7 +9351,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8484,6 +9365,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/validateProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8507,7 +9391,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8520,6 +9405,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8543,7 +9431,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8556,6 +9445,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8579,7 +9471,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8611,7 +9504,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8625,6 +9519,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8648,7 +9545,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8661,6 +9559,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8684,7 +9585,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8716,7 +9618,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8730,6 +9633,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8753,7 +9659,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8766,6 +9673,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8789,7 +9699,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8821,7 +9732,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8835,6 +9747,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8858,7 +9773,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8871,6 +9787,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8894,7 +9813,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8926,7 +9846,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -8940,6 +9861,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribDivisor",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.9",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8963,7 +9887,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -8976,6 +9901,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribI",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -8999,7 +9927,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9012,6 +9941,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribI",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9035,7 +9967,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9067,7 +10000,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -9081,6 +10015,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribI",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9104,7 +10041,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9117,6 +10055,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribI",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9140,7 +10081,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9172,7 +10114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -9186,6 +10129,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/vertexAttribIPointer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9209,7 +10155,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9222,6 +10169,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttribPointer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9245,7 +10195,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9258,6 +10209,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/viewport",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.4",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9281,7 +10235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -9294,6 +10249,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/waitSync",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.14",
+          "tags": [
+            "web-features:webgl2"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -9317,7 +10275,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGLActiveInfo.json b/api/WebGLActiveInfo.json
index 83a9cb26a52903..c2639765fee959 100644
--- a/api/WebGLActiveInfo.json
+++ b/api/WebGLActiveInfo.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.11",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -80,6 +85,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/name",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLActiveInfo-name",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "10"
@@ -111,7 +119,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,6 +133,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/size",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLActiveInfo-size",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "10"
@@ -155,7 +167,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,6 +181,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/type",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLActiveInfo-type",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "10"
@@ -199,7 +215,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGLBuffer.json b/api/WebGLBuffer.json
index 11afb6ae41a098..a47125e0d41db1 100644
--- a/api/WebGLBuffer.json
+++ b/api/WebGLBuffer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLBuffer",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.4",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLContextEvent.json b/api/WebGLContextEvent.json
index 9b3f69fa1cebbc..3472a4d3925dde 100644
--- a/api/WebGLContextEvent.json
+++ b/api/WebGLContextEvent.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLContextEvent",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "9"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -48,6 +52,9 @@
           "description": "<code>WebGLContextEvent()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/WebGLContextEvent",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "17"
@@ -75,7 +82,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +116,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -121,6 +130,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/statusMessage",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.1",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -152,7 +164,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGLFramebuffer.json b/api/WebGLFramebuffer.json
index 89548280131a65..9715b4313a27d5 100644
--- a/api/WebGLFramebuffer.json
+++ b/api/WebGLFramebuffer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLFramebuffer",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.5",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLObject.json b/api/WebGLObject.json
index a18d4a83ab2b7d..7860c99427230d 100644
--- a/api/WebGLObject.json
+++ b/api/WebGLObject.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLObject",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.3",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "126"
@@ -25,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/api/WebGLProgram.json b/api/WebGLProgram.json
index 030cb021b28bf5..ecbecec7a3aedb 100644
--- a/api/WebGLProgram.json
+++ b/api/WebGLProgram.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLProgram",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.6",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLQuery.json b/api/WebGLQuery.json
index f9851046d1aaa0..2027046d4cd35e 100644
--- a/api/WebGLQuery.json
+++ b/api/WebGLQuery.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLQuery",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.2",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLRenderbuffer.json b/api/WebGLRenderbuffer.json
index 45b75e9795306c..3087eefc7d7def 100644
--- a/api/WebGLRenderbuffer.json
+++ b/api/WebGLRenderbuffer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderbuffer",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.7",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLRenderingContext.json b/api/WebGLRenderingContext.json
index 7db84324ae48c1..b54cfe3e0737a3 100644
--- a/api/WebGLRenderingContext.json
+++ b/api/WebGLRenderingContext.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "9"
@@ -39,7 +42,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "4.4.3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -84,6 +89,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/activeTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -117,7 +125,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,6 +139,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/attachShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -163,7 +175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,6 +189,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindAttribLocation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -209,7 +225,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -225,6 +242,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -258,7 +278,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -274,6 +295,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -307,7 +331,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -320,6 +345,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -353,7 +381,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -369,6 +398,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.1"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -402,7 +434,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -415,6 +448,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendColor",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -448,7 +484,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -461,6 +498,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -494,7 +534,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -507,6 +548,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquationSeparate",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -540,7 +584,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -553,6 +598,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFunc",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -586,7 +634,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -599,6 +648,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFuncSeparate",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -632,7 +684,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -645,6 +698,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bufferData",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -678,7 +734,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -691,6 +748,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bufferSubData",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -724,7 +784,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -737,6 +798,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/canvas",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-canvas",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -770,7 +834,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -786,6 +851,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -819,7 +887,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -832,6 +901,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clear",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -865,7 +937,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -878,6 +951,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearColor",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -911,7 +987,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -924,6 +1001,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearDepth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -957,7 +1037,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -970,6 +1051,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearStencil",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1003,7 +1087,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1016,6 +1101,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/colorMask",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1049,7 +1137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1062,6 +1151,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compileShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1095,7 +1187,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1108,6 +1201,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compressedTexImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#COMPRESSEDTEXIMAGE2D",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1141,7 +1237,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1175,7 +1272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1189,6 +1287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compressedTexSubImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#COMPRESSEDTEXSUBIMAGE2D",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1222,7 +1323,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1235,6 +1337,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1268,7 +1373,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1281,6 +1387,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexSubImage2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1314,7 +1423,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1327,6 +1437,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1360,7 +1473,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1373,6 +1487,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1406,7 +1523,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1419,6 +1537,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1452,7 +1573,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1465,6 +1587,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1498,7 +1623,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1511,6 +1637,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1544,7 +1673,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1557,6 +1687,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1590,7 +1723,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1603,6 +1737,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/cullFace",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1636,7 +1773,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1649,6 +1787,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1682,7 +1823,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1695,6 +1837,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1728,7 +1873,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1741,6 +1887,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1774,7 +1923,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1787,6 +1937,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1820,7 +1973,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1833,6 +1987,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1866,7 +2023,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1879,6 +2037,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteTexture",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1912,7 +2073,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1925,6 +2087,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthFunc",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -1958,7 +2123,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1971,6 +2137,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthMask",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2004,7 +2173,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2017,6 +2187,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthRange",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2050,7 +2223,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2063,6 +2237,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/detachShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2096,7 +2273,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2109,6 +2287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disable",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2142,7 +2323,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2155,6 +2337,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disableVertexAttribArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2188,7 +2373,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2201,6 +2387,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawArrays",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2234,7 +2423,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2247,6 +2437,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawElements",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2280,7 +2473,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2293,6 +2487,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferColorSpace",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferColorSpace",
+          "tags": [
+            "web-features:webgl-color-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "104"
@@ -2300,7 +2497,10 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "127"
+              "version_added": "127",
+              "version_removed": "130",
+              "partial_implementation": true,
+              "notes": "Accidental early exposure with no functionality."
             },
             "firefox_android": "mirror",
             "ie": {
@@ -2314,7 +2514,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2326,6 +2527,9 @@
       "drawingBufferFormat": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.1",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "122"
@@ -2347,7 +2551,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2360,6 +2565,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferHeight",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferHeight",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2393,7 +2601,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2405,6 +2614,9 @@
       "drawingBufferStorage": {
         "__compat": {
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#2.2",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "122"
@@ -2426,7 +2638,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2439,6 +2652,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferWidth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-drawingBufferWidth",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2472,7 +2688,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2485,6 +2702,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enable",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2518,7 +2738,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2531,6 +2752,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enableVertexAttribArray",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2564,7 +2788,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2577,6 +2802,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/finish",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2610,7 +2838,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2623,6 +2852,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/flush",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.11",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2656,7 +2888,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2669,6 +2902,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/framebufferRenderbuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2702,7 +2938,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2715,6 +2952,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/framebufferTexture2D",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -2748,7 +2988,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -2761,6 +3002,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -2794,7 +3038,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -2807,6 +3052,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/generateMipmap",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -2840,7 +3088,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -2853,6 +3102,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -2886,7 +3138,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -2899,6 +3152,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -2932,7 +3188,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -2945,6 +3202,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -2978,7 +3238,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -2991,6 +3252,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3024,7 +3288,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3040,6 +3305,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.3"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3073,7 +3341,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -3086,6 +3355,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.2",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3119,7 +3391,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3132,6 +3405,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3165,7 +3441,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3178,6 +3455,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.14",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -3211,7 +3491,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3227,6 +3508,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.4"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3260,7 +3544,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3276,6 +3561,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3309,7 +3597,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3322,6 +3611,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getProgramInfoLog",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -3355,7 +3647,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3371,6 +3664,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.7"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3404,7 +3700,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3420,6 +3717,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3453,7 +3753,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -3466,6 +3767,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3499,7 +3803,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -3512,6 +3817,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderParameter",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3545,7 +3853,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -3558,6 +3867,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3591,7 +3903,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -3604,6 +3917,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3637,7 +3953,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3650,6 +3967,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.14",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3683,7 +4003,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3699,6 +4020,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3732,7 +4056,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3748,6 +4073,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -3781,7 +4109,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -3794,6 +4123,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getUniformLocation",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -3827,7 +4159,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3843,6 +4176,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.8"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -3876,7 +4212,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3889,6 +4226,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -3922,7 +4262,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3935,6 +4276,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/hint",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -3968,7 +4312,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -3981,6 +4326,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isBuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.5",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4014,7 +4362,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4027,6 +4376,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isContextLost",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.13",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4060,7 +4412,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4076,6 +4429,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4109,7 +4465,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -4122,6 +4479,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isFramebuffer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.6",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4155,7 +4515,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4168,6 +4529,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4201,7 +4565,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4214,6 +4579,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4247,7 +4615,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4260,6 +4629,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isShader",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -4293,7 +4665,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4306,6 +4679,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -4339,7 +4715,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -4352,6 +4729,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/lineWidth",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4385,7 +4765,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4398,6 +4779,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/linkProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4431,7 +4815,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -4473,7 +4858,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4490,6 +4876,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#PIXEL_STORAGE_PARAMETERS",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.2"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4523,7 +4912,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -4536,6 +4926,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4569,7 +4962,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4582,6 +4976,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/readPixels",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.12",
+          "tags": [
+            "web-features:webgl"
+          ],
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               "version_added": "9"
@@ -4615,7 +5012,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -4631,6 +5029,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.7",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.5"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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               "version_added": "9"
@@ -4664,7 +5065,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4677,6 +5079,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -4710,7 +5115,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4723,6 +5129,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.4",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4756,7 +5165,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4769,6 +5179,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4802,7 +5215,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4815,6 +5229,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4848,7 +5265,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4861,6 +5279,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4894,7 +5315,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4907,6 +5329,9 @@
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -4940,7 +5365,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4953,6 +5379,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -4986,7 +5415,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -4999,6 +5429,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5032,7 +5465,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
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@@ -5045,6 +5479,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.3",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5078,7 +5515,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -5094,6 +5532,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5127,7 +5568,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5143,6 +5585,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5176,7 +5621,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -5192,6 +5638,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.8",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5225,7 +5674,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
           },
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@@ -5241,6 +5691,9 @@
             "https://registry.khronos.org/webgl/specs/latest/1.0/#TEXSUBIMAGE2D",
             "https://registry.khronos.org/webgl/specs/latest/2.0/#3.7.6"
           ],
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5274,7 +5727,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5287,6 +5741,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5320,7 +5777,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5333,6 +5791,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5366,7 +5827,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5379,6 +5841,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5412,7 +5877,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5425,6 +5891,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5458,7 +5927,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5471,6 +5941,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5504,7 +5977,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5517,6 +5991,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5550,7 +6027,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
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@@ -5563,6 +6041,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5596,7 +6077,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
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@@ -5609,6 +6091,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5642,7 +6127,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5655,6 +6141,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5688,7 +6177,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5701,6 +6191,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5734,7 +6227,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5747,6 +6241,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5780,7 +6277,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
+            "webview_ios": "mirror"
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@@ -5793,6 +6291,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
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@@ -5826,7 +6327,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5839,6 +6341,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5872,7 +6377,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
+            },
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@@ -5885,6 +6391,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5918,7 +6427,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
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-            }
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@@ -5931,6 +6441,9 @@
         "__compat": {
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           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
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@@ -5964,7 +6477,8 @@
             "samsunginternet_android": "mirror",
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-            }
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@@ -5977,6 +6491,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6010,7 +6527,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6023,6 +6541,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniformMatrix",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6056,7 +6577,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6069,6 +6591,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniformMatrix",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6102,7 +6627,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6115,6 +6641,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniformMatrix",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6148,7 +6677,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6161,6 +6691,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/unpackColorSpace",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLRenderingContext-unpackColorSpace",
+          "tags": [
+            "web-features:webgl-color-management"
+          ],
           "support": {
             "chrome": {
               "version_added": "104"
@@ -6182,7 +6715,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6195,6 +6729,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/useProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6228,7 +6765,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6241,6 +6779,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/validateProgram",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.9",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6274,7 +6815,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6287,6 +6829,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6320,7 +6865,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6333,6 +6879,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6366,7 +6915,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6400,7 +6950,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -6414,6 +6965,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6447,7 +7001,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6460,6 +7015,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6493,7 +7051,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6527,7 +7086,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -6541,6 +7101,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6574,7 +7137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6587,6 +7151,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6620,7 +7187,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6654,7 +7222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -6668,6 +7237,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6701,7 +7273,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6714,6 +7287,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6747,7 +7323,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6781,7 +7358,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -6795,6 +7373,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttribPointer",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.10",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6828,7 +7409,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6841,6 +7423,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/viewport",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.14.4",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -6874,7 +7459,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGLSampler.json b/api/WebGLSampler.json
index 3b1cc8199cb50b..30ba796a41d8f4 100644
--- a/api/WebGLSampler.json
+++ b/api/WebGLSampler.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLSampler",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.3",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLShader.json b/api/WebGLShader.json
index 2a70194096184b..fc0d8234de44c1 100644
--- a/api/WebGLShader.json
+++ b/api/WebGLShader.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLShader",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.8",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLShaderPrecisionFormat.json b/api/WebGLShaderPrecisionFormat.json
index 567f54e5f34b03..ce2e5924e85b45 100644
--- a/api/WebGLShaderPrecisionFormat.json
+++ b/api/WebGLShaderPrecisionFormat.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.12",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "9"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -80,6 +85,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/precision",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLShaderPrecisionFormat-precision",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -111,7 +119,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,6 +133,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMax",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLShaderPrecisionFormat-rangeMax",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -155,7 +167,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,6 +181,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMin",
           "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#DOM-WebGLShaderPrecisionFormat-rangeMin",
+          "tags": [
+            "web-features:webgl"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -199,7 +215,8 @@
               "version_added": "8"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebGLSync.json b/api/WebGLSync.json
index 679b79943c3408..d3ae190f312a8c 100644
--- a/api/WebGLSync.json
+++ b/api/WebGLSync.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLSync",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.4",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLTexture.json b/api/WebGLTexture.json
index ba5a18d775ed1c..f4fcb849565613 100644
--- a/api/WebGLTexture.json
+++ b/api/WebGLTexture.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLTexture",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.9",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLTimerQueryEXT.json b/api/WebGLTimerQueryEXT.json
index 5701cf3b940e53..71870885845fbc 100644
--- a/api/WebGLTimerQueryEXT.json
+++ b/api/WebGLTimerQueryEXT.json
@@ -41,7 +41,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLTransformFeedback.json b/api/WebGLTransformFeedback.json
index b86ffcd9e6405c..f86985b2336cbf 100644
--- a/api/WebGLTransformFeedback.json
+++ b/api/WebGLTransformFeedback.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLTransformFeedback",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.5",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLUniformLocation.json b/api/WebGLUniformLocation.json
index b9c19b43c7d44a..f03637be3403cd 100644
--- a/api/WebGLUniformLocation.json
+++ b/api/WebGLUniformLocation.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLUniformLocation",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/1.0/#5.10",
+        "tags": [
+          "web-features:webgl"
+        ],
         "support": {
           "chrome": {
             "version_added": "10"
@@ -35,7 +38,8 @@
             "version_added": "8"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebGLVertexArrayObject.json b/api/WebGLVertexArrayObject.json
index b24839167009b7..094f95c21ff460 100644
--- a/api/WebGLVertexArrayObject.json
+++ b/api/WebGLVertexArrayObject.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebGLVertexArrayObject",
         "spec_url": "https://registry.khronos.org/webgl/specs/latest/2.0/#3.6",
+        "tags": [
+          "web-features:webgl2"
+        ],
         "support": {
           "chrome": {
             "version_added": "56"
@@ -27,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebGLVertexArrayObjectOES.json b/api/WebGLVertexArrayObjectOES.json
index b5da5bd4721430..b69cb1cbb0d03c 100644
--- a/api/WebGLVertexArrayObjectOES.json
+++ b/api/WebGLVertexArrayObjectOES.json
@@ -29,7 +29,8 @@
             "version_added": "9"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WebKitPoint.json b/api/WebKitPoint.json
index dabf8bfaf304d2..5cd126270d2a87 100644
--- a/api/WebKitPoint.json
+++ b/api/WebKitPoint.json
@@ -31,7 +31,8 @@
           "webview_android": {
             "version_added": "2",
             "version_removed": "39"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             "webview_android": {
               "version_added": "2",
               "version_removed": "39"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             "webview_android": {
               "version_added": "2",
               "version_removed": "39"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +151,8 @@
             "webview_android": {
               "version_added": "2",
               "version_removed": "39"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebSocket.json b/api/WebSocket.json
index 2042d83fafdbc9..bd8fca2ec2de1d 100644
--- a/api/WebSocket.json
+++ b/api/WebSocket.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket",
         "spec_url": "https://websockets.spec.whatwg.org/#the-websocket-interface",
+        "tags": [
+          "web-features:websockets"
+        ],
         "support": {
           "chrome": {
             "version_added": "5"
@@ -45,7 +48,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,6 +62,9 @@
           "description": "<code>WebSocket()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/WebSocket",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-websocket①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -98,18 +105,62 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "url_parameter_http_https_relative": {
+          "__compat": {
+            "description": "<code>url</code> parameter allows <code>https</code>, <code>http</code>, and relative URLs",
+            "support": {
+              "chrome": {
+                "version_added": "125"
+              },
+              "chrome_android": "mirror",
+              "deno": {
+                "version_added": false
+              },
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "124"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "nodejs": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "17.3"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       },
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -147,7 +198,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,6 +212,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/binaryType",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-binarytype①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -193,7 +248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -206,6 +262,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/bufferedAmount",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-bufferedamount①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -239,7 +298,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,6 +312,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/close",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-close①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -285,7 +348,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,6 +363,9 @@
           "description": "<code>close</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/close_event",
           "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onclose",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -334,7 +401,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -348,6 +416,9 @@
           "description": "<code>error</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/error_event",
           "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onerror",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -383,7 +454,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -396,6 +468,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/extensions",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-extensions①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "16"
@@ -429,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -443,6 +519,9 @@
           "description": "<code>message</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/message_event",
           "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onmessage",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -478,7 +557,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -492,6 +572,9 @@
           "description": "<code>open</code> event",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/open_event",
           "spec_url": "https://websockets.spec.whatwg.org/#dom-websocket-onopen",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -527,7 +610,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -540,6 +624,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/protocol",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-protocol①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -573,7 +660,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -616,7 +704,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -629,6 +718,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/readyState",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-readystate①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -662,7 +754,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -675,6 +768,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/send",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-send①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -726,7 +822,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -739,6 +836,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocket/url",
           "spec_url": "https://websockets.spec.whatwg.org/#ref-for-dom-websocket-url①",
+          "tags": [
+            "web-features:websockets"
+          ],
           "support": {
             "chrome": {
               "version_added": "18"
@@ -772,7 +872,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebSocketError.json b/api/WebSocketError.json
index 1a90179a35abe2..d27fe83085d8ab 100644
--- a/api/WebSocketError.json
+++ b/api/WebSocketError.json
@@ -3,7 +3,8 @@
     "WebSocketError": {
       "__compat": {
         "tags": [
-          "web-features:web-features:web-socket-stream"
+          "web-features:web-features:web-socket-stream",
+          "web-features:websockets"
         ],
         "support": {
           "chrome": {
@@ -26,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -38,7 +40,8 @@
         "__compat": {
           "description": "<code>WebSocketError()</code> constructor",
           "tags": [
-            "web-features:web-features:web-socket-stream"
+            "web-features:web-features:web-socket-stream",
+            "web-features:websockets"
           ],
           "support": {
             "chrome": {
@@ -61,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -73,7 +77,8 @@
       "closeCode": {
         "__compat": {
           "tags": [
-            "web-features:web-features:web-socket-stream"
+            "web-features:web-features:web-socket-stream",
+            "web-features:websockets"
           ],
           "support": {
             "chrome": {
@@ -96,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -108,7 +114,8 @@
       "reason": {
         "__compat": {
           "tags": [
-            "web-features:web-features:web-socket-stream"
+            "web-features:web-features:web-socket-stream",
+            "web-features:websockets"
           ],
           "support": {
             "chrome": {
@@ -131,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebSocketStream.json b/api/WebSocketStream.json
index efcf489c5aec62..8cf44c2bacc704 100644
--- a/api/WebSocketStream.json
+++ b/api/WebSocketStream.json
@@ -2,6 +2,7 @@
   "api": {
     "WebSocketStream": {
       "__compat": {
+        "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream",
         "tags": [
           "web-features:web-features:web-socket-stream"
         ],
@@ -26,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -37,6 +39,7 @@
       "WebSocketStream": {
         "__compat": {
           "description": "<code>WebSocketStream()</code> constructor",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream/WebSocketStream",
           "tags": [
             "web-features:web-features:web-socket-stream"
           ],
@@ -61,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -72,6 +76,7 @@
       },
       "close": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream/close",
           "tags": [
             "web-features:web-features:web-socket-stream"
           ],
@@ -96,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -107,6 +113,7 @@
       },
       "closed": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream/closed",
           "tags": [
             "web-features:web-features:web-socket-stream"
           ],
@@ -131,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -142,6 +150,7 @@
       },
       "opened": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream/opened",
           "tags": [
             "web-features:web-features:web-socket-stream"
           ],
@@ -166,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -177,6 +187,7 @@
       },
       "url": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/WebSocketStream/url",
           "tags": [
             "web-features:web-features:web-socket-stream"
           ],
@@ -201,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebTransport.json b/api/WebTransport.json
index ce46440f1196d3..083c22a0d1a7c5 100644
--- a/api/WebTransport.json
+++ b/api/WebTransport.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -132,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -166,7 +170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -200,7 +205,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +240,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -271,7 +278,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -308,7 +316,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -342,7 +351,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -379,7 +389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -412,7 +423,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -452,7 +464,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -484,7 +497,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -518,7 +532,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -556,7 +571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -593,7 +609,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -630,7 +647,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -667,7 +685,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -704,7 +723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -738,7 +758,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebTransportBidirectionalStream.json b/api/WebTransportBidirectionalStream.json
index 7166959c78f6fc..0a17d77b17ef5c 100644
--- a/api/WebTransportBidirectionalStream.json
+++ b/api/WebTransportBidirectionalStream.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -168,7 +172,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/api/WebTransportDatagramDuplexStream.json b/api/WebTransportDatagramDuplexStream.json
index ace812c58ee545..c9517270a360d6 100644
--- a/api/WebTransportDatagramDuplexStream.json
+++ b/api/WebTransportDatagramDuplexStream.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +99,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -245,7 +251,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -282,7 +289,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -319,7 +327,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebTransportError.json b/api/WebTransportError.json
index d670e637754d9d..bc7a192610a80a 100644
--- a/api/WebTransportError.json
+++ b/api/WebTransportError.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WebTransportReceiveStream.json b/api/WebTransportReceiveStream.json
index 6735cd453824a9..f135ae51bb5825 100644
--- a/api/WebTransportReceiveStream.json
+++ b/api/WebTransportReceiveStream.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WebTransportSendStream.json b/api/WebTransportSendStream.json
index f8b2e809c73ff2..d6357eaab58507 100644
--- a/api/WebTransportSendStream.json
+++ b/api/WebTransportSendStream.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -91,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -125,7 +128,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WheelEvent.json b/api/WheelEvent.json
index 7ecc50c8017fce..0f2eb2b5faf19a 100644
--- a/api/WheelEvent.json
+++ b/api/WheelEvent.json
@@ -31,7 +31,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -69,7 +70,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -107,7 +109,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -218,7 +223,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +259,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +298,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +337,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,7 +376,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/Window.json b/api/Window.json
index b9843d7aa95c40..e57fad384cb9cb 100644
--- a/api/Window.json
+++ b/api/Window.json
@@ -36,7 +36,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -78,7 +79,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +123,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -167,7 +170,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -210,7 +214,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -263,7 +268,8 @@
                 "notes": "The <code>onbeforeinstallprompt</code> event handler property is not supported."
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,7 +312,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -352,7 +359,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -397,7 +405,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -432,7 +441,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -478,7 +488,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -522,7 +533,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -566,7 +578,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -616,7 +629,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -669,7 +683,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -704,7 +719,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -744,7 +760,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -785,7 +802,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -830,7 +848,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -870,7 +889,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -919,7 +939,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "Starting with Chrome 46, this method is blocked inside an <code>&lt;iframe&gt;</code> unless its sandbox attribute has the value <code>allow-modals</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -955,7 +976,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -968,6 +990,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/credentialless",
           "spec_url": "https://wicg.github.io/anonymous-iframe/#dom-window-credentialless",
+          "tags": [
+            "web-features:iframe-credentialless"
+          ],
           "support": {
             "chrome": {
               "version_added": "110"
@@ -989,7 +1014,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1026,7 +1052,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1071,7 +1098,8 @@
               "version_added": "4.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1129,7 +1157,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1164,7 +1193,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1206,7 +1236,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1246,7 +1277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1285,7 +1317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1336,7 +1369,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1381,7 +1415,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1421,7 +1456,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1477,7 +1513,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1511,7 +1548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1546,7 +1584,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1589,7 +1628,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1639,7 +1679,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1681,7 +1722,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1721,7 +1763,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1754,7 +1797,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1825,7 +1869,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1896,7 +1941,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1939,7 +1985,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1979,7 +2026,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2013,7 +2061,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2045,7 +2094,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2083,7 +2133,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2117,7 +2168,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2157,7 +2209,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2212,7 +2265,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2252,7 +2306,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2299,7 +2354,8 @@
               "notes": "This property returns the height of the <a href='https://developer.mozilla.org/docs/Glossary/visual_viewport'>visual viewport</a> instead of the layout viewport. See <a href='https://webkit.org/b/174362'>bug 174362</a> for details."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2346,7 +2402,8 @@
               "notes": "This property returns the width of the <a href='https://developer.mozilla.org/docs/Glossary/visual_viewport'>visual viewport</a> instead of the layout viewport. See <a href='https://webkit.org/b/174362'>bug 174362</a> for details."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2388,7 +2445,8 @@
             "samsunginternet_android": {
               "version_added": "4.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2424,7 +2482,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -2464,7 +2523,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2511,7 +2571,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2557,7 +2618,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2608,7 +2670,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2646,7 +2709,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2688,7 +2752,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2726,7 +2791,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2770,7 +2836,8 @@
               "version_added": "4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2816,7 +2883,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2856,7 +2924,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2896,7 +2965,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2932,7 +3002,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2966,7 +3037,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2999,7 +3071,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3043,7 +3116,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3056,6 +3130,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/navigation",
           "spec_url": "https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigation",
+          "tags": [
+            "web-features:navigation"
+          ],
           "support": {
             "chrome": {
               "version_added": "102"
@@ -3080,7 +3157,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3165,7 +3243,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3209,7 +3288,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3253,7 +3333,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3296,7 +3377,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3328,7 +3410,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -3365,7 +3448,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3404,7 +3488,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3440,7 +3525,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3481,7 +3567,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3525,7 +3612,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3570,7 +3658,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3604,7 +3693,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3646,7 +3736,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3688,7 +3779,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3727,7 +3819,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3763,7 +3856,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3802,7 +3896,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3838,7 +3933,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -3878,7 +3974,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3920,7 +4017,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -3969,7 +4067,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "Before version 37, WebView would fire a <code>popstate</code> event on page load."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4024,7 +4123,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4066,7 +4166,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4115,7 +4216,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4163,7 +4265,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4201,7 +4304,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4244,7 +4348,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4284,7 +4389,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4369,7 +4475,8 @@
                 "prefix": "webkit",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4410,7 +4517,8 @@
             "webview_android": {
               "prefix": "webkit",
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4445,7 +4553,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4494,7 +4603,8 @@
             "webview_android": {
               "version_added": "1",
               "notes": "WebView does not fire a <code>resize</code> event on page load."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4537,7 +4647,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4580,7 +4691,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4618,7 +4730,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -4658,7 +4771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4698,7 +4812,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4732,7 +4847,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4773,7 +4889,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4807,7 +4924,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4849,7 +4967,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4883,7 +5002,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -4925,7 +5045,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -4959,7 +5080,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5000,7 +5122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5033,7 +5156,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5066,7 +5190,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5099,7 +5224,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5142,7 +5268,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5182,7 +5309,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5215,7 +5343,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5248,7 +5377,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5281,7 +5411,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5315,7 +5446,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5348,7 +5480,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5381,7 +5514,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5414,7 +5548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5454,7 +5589,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5487,7 +5623,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5520,7 +5657,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5553,7 +5691,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5631,7 +5770,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5665,7 +5805,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5743,7 +5884,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5777,7 +5919,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -5820,7 +5963,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5865,7 +6009,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5906,7 +6051,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5939,7 +6085,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -5973,7 +6120,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -5986,6 +6134,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/showDirectoryPicker",
           "spec_url": "https://wicg.github.io/file-system-access/#api-showdirectorypicker",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -6009,7 +6160,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6053,7 +6205,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6066,6 +6219,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/showOpenFilePicker",
           "spec_url": "https://wicg.github.io/file-system-access/#api-showopenfilepicker",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -6089,7 +6245,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6102,6 +6259,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/showSaveFilePicker",
           "spec_url": "https://wicg.github.io/file-system-access/#api-showsavefilepicker",
+          "tags": [
+            "web-features:file-system-access"
+          ],
           "support": {
             "chrome": {
               "version_added": "86"
@@ -6125,7 +6285,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -6163,7 +6324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6209,7 +6371,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/487255"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6249,7 +6412,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6287,7 +6451,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6329,7 +6494,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6373,7 +6539,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6411,7 +6578,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6449,7 +6617,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6494,7 +6663,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6538,7 +6708,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6587,7 +6758,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6620,7 +6792,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6659,7 +6832,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6717,7 +6891,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6779,7 +6954,8 @@
               "version_removed": "13.0",
               "notes": "Supported on Samsung Internet for GearVR."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6837,7 +7013,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6909,7 +7086,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -6982,7 +7160,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7024,7 +7203,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "39"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7066,7 +7246,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "39"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -7108,7 +7289,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WindowClient.json b/api/WindowClient.json
index b18934a85d6558..475777e72a69ae 100644
--- a/api/WindowClient.json
+++ b/api/WindowClient.json
@@ -27,7 +27,10 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,
@@ -60,7 +63,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": true,
@@ -96,7 +102,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -132,7 +141,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -180,6 +192,9 @@
             },
             "webview_android": {
               "version_added": "42"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -216,7 +231,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/api/WindowControlsOverlay.json b/api/WindowControlsOverlay.json
index df91ec0d7673ef..2e084db6b397ae 100644
--- a/api/WindowControlsOverlay.json
+++ b/api/WindowControlsOverlay.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WindowControlsOverlayGeometryChangeEvent.json b/api/WindowControlsOverlayGeometryChangeEvent.json
index 25c2343309abcc..5e834178955a63 100644
--- a/api/WindowControlsOverlayGeometryChangeEvent.json
+++ b/api/WindowControlsOverlayGeometryChangeEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WindowSharedStorage.json b/api/WindowSharedStorage.json
index bdd2efb8a4b2af..137403b57988b9 100644
--- a/api/WindowSharedStorage.json
+++ b/api/WindowSharedStorage.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -92,7 +94,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -126,7 +129,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Worker.json b/api/Worker.json
index 51fea50ad6baeb..c13bf02ea678a2 100644
--- a/api/Worker.json
+++ b/api/Worker.json
@@ -56,7 +56,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -113,7 +114,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +162,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -200,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -241,7 +245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,7 +289,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -331,7 +337,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -389,7 +396,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -522,7 +531,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -579,7 +589,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WorkerGlobalScope.json b/api/WorkerGlobalScope.json
index 1427ad5f79c663..16d64bad1a18df 100644
--- a/api/WorkerGlobalScope.json
+++ b/api/WorkerGlobalScope.json
@@ -36,7 +36,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -73,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -151,7 +154,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -196,7 +200,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -231,7 +236,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -279,6 +285,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
@@ -322,7 +331,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -365,7 +375,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -404,7 +415,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -443,7 +455,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -478,7 +491,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -515,7 +529,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -560,7 +575,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -595,7 +611,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WorkerLocation.json b/api/WorkerLocation.json
index 5c0d8999f6fc02..b108458a2a211a 100644
--- a/api/WorkerLocation.json
+++ b/api/WorkerLocation.json
@@ -36,7 +36,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -80,7 +81,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +127,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -170,7 +173,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -215,7 +219,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -254,7 +259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -299,7 +305,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -344,7 +351,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -389,7 +397,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -434,7 +443,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -481,7 +491,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WorkerNavigator.json b/api/WorkerNavigator.json
index 6db7ef416568dd..4a8edc38c86fc7 100644
--- a/api/WorkerNavigator.json
+++ b/api/WorkerNavigator.json
@@ -36,7 +36,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +115,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -155,7 +158,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "50"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -239,7 +244,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -275,7 +281,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -330,7 +337,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -370,7 +378,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,7 +423,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -462,7 +472,8 @@
             "webview_android": {
               "version_added": "37",
               "notes": "Before version 65, <code>navigator.languages[0]</code> is not guaranteed to equal <code>navigator.language</code>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -502,7 +513,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -536,7 +548,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -585,7 +598,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -636,7 +650,8 @@
               "version_added": "4.4",
               "partial_implementation": true,
               "notes": "Can incorrectly return true, see <a href='https://crbug.com/811122'>bug 811122</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -673,7 +688,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/490120"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -721,7 +737,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -757,7 +774,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -793,7 +811,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -828,7 +847,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
@@ -862,7 +884,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -898,7 +921,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -938,7 +962,8 @@
             "webview_android": {
               "version_added": false,
               "notes": "WebView exposes <code>navigator.usb</code>, but does not support WebUSB. See <a href='https://crbug.com/933055'>bug 933055</a>."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -980,7 +1005,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1017,7 +1043,8 @@
             "webview_android": {
               "version_added": false,
               "impl_url": "https://crbug.com/921655"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/Worklet.json b/api/Worklet.json
index ce863c360c5d04..d1a1f7b0be368a 100644
--- a/api/Worklet.json
+++ b/api/Worklet.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -58,7 +59,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +99,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WorkletGlobalScope.json b/api/WorkletGlobalScope.json
index 3098e484f024fd..2b05e01eb601f6 100644
--- a/api/WorkletGlobalScope.json
+++ b/api/WorkletGlobalScope.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/WorkletSharedStorage.json b/api/WorkletSharedStorage.json
index ac4412d899dbd9..2b6338deb998b5 100644
--- a/api/WorkletSharedStorage.json
+++ b/api/WorkletSharedStorage.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -161,7 +165,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -195,7 +200,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -229,7 +235,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -262,7 +269,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/WritableStream.json b/api/WritableStream.json
index 61f5078c2ff668..35b13488cce11c 100644
--- a/api/WritableStream.json
+++ b/api/WritableStream.json
@@ -50,7 +50,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -99,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -148,7 +150,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +191,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +241,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +291,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -326,7 +332,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WritableStreamDefaultController.json b/api/WritableStreamDefaultController.json
index 6593b1965acee8..b9d9300503580f 100644
--- a/api/WritableStreamDefaultController.json
+++ b/api/WritableStreamDefaultController.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -130,7 +132,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/WritableStreamDefaultWriter.json b/api/WritableStreamDefaultWriter.json
index b2117a51c8d7c2..f78191b18a4496 100644
--- a/api/WritableStreamDefaultWriter.json
+++ b/api/WritableStreamDefaultWriter.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -86,7 +87,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -131,7 +133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -176,7 +179,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -221,7 +225,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -266,7 +271,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -311,7 +317,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -356,7 +363,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -401,7 +409,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XMLDocument.json b/api/XMLDocument.json
index 0ed9266ef44378..caacfff1cc6a15 100644
--- a/api/XMLDocument.json
+++ b/api/XMLDocument.json
@@ -83,7 +83,8 @@
               "partial_implementation": true,
               "notes": "Implemented as an alias for <code>Document</code>."
             }
-          ]
+          ],
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/XMLHttpRequest.json b/api/XMLHttpRequest.json
index 3b3d32ca316c3c..12c86af999147e 100644
--- a/api/XMLHttpRequest.json
+++ b/api/XMLHttpRequest.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest",
         "spec_url": "https://xhr.spec.whatwg.org/#interface-xmlhttprequest",
+        "tags": [
+          "web-features:xhr"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -40,7 +43,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -53,6 +57,9 @@
           "description": "<code>XMLHttpRequest()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/XMLHttpRequest",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequest",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -82,7 +89,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,6 +102,9 @@
       "worker_support": {
         "__compat": {
           "description": "Available in workers",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "4"
@@ -125,7 +136,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,6 +150,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/abort",
           "spec_url": "https://xhr.spec.whatwg.org/#the-abort()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -165,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,6 +198,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-abort",
             "https://xhr.spec.whatwg.org/#handler-xhr-onabort"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -211,7 +230,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -248,7 +268,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -265,6 +286,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-error",
             "https://xhr.spec.whatwg.org/#handler-xhr-onerror"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -294,7 +318,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -307,6 +332,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/getAllResponseHeaders",
           "spec_url": "https://xhr.spec.whatwg.org/#the-getallresponseheaders()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -335,7 +363,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -367,7 +396,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -381,6 +411,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/getResponseHeader",
           "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequest-getresponseheader",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -409,7 +442,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -426,6 +460,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-load",
             "https://xhr.spec.whatwg.org/#handler-xhr-onload"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -455,7 +492,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -472,6 +510,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-loadend",
             "https://xhr.spec.whatwg.org/#handler-xhr-onloadend"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "18"
@@ -501,7 +542,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -518,6 +560,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-loadstart",
             "https://xhr.spec.whatwg.org/#handler-xhr-onloadstart"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -545,7 +590,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -558,6 +604,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/open",
           "spec_url": "https://xhr.spec.whatwg.org/#the-open()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -586,7 +635,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -599,6 +649,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/overrideMimeType",
           "spec_url": "https://xhr.spec.whatwg.org/#the-overridemimetype()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -633,7 +686,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -650,6 +704,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-progress",
             "https://xhr.spec.whatwg.org/#handler-xhr-onprogress"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -681,7 +738,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -694,6 +752,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/readyState",
           "spec_url": "https://xhr.spec.whatwg.org/#states",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -721,7 +782,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -738,6 +800,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-readystatechange",
             "https://xhr.spec.whatwg.org/#handler-xhr-onreadystatechange"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -765,7 +830,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -778,6 +844,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/response",
           "spec_url": "https://xhr.spec.whatwg.org/#the-response-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "9"
@@ -807,7 +876,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -820,6 +890,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseText",
           "spec_url": "https://xhr.spec.whatwg.org/#the-responsetext-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -848,7 +921,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -902,7 +976,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -954,7 +1029,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1007,7 +1083,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1060,7 +1137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1111,7 +1189,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1148,7 +1227,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1161,6 +1241,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseXML",
           "spec_url": "https://xhr.spec.whatwg.org/#the-responsexml-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1193,7 +1276,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1206,6 +1290,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send",
           "spec_url": "https://xhr.spec.whatwg.org/#the-send()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1233,7 +1320,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1245,6 +1333,9 @@
           "__compat": {
             "description": "ArrayBuffer as parameter to send()",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send#ArrayBuffer",
+            "tags": [
+              "web-features:xhr"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -1274,7 +1365,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1287,6 +1379,9 @@
           "__compat": {
             "description": "ArrayBufferView as parameter to send()",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send#ArrayBufferView",
+            "tags": [
+              "web-features:xhr"
+            ],
             "support": {
               "chrome": {
                 "version_added": "22"
@@ -1314,7 +1409,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1327,6 +1423,9 @@
           "__compat": {
             "description": "Blob as parameter to send()",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send#Blob",
+            "tags": [
+              "web-features:xhr"
+            ],
             "support": {
               "chrome": {
                 "version_added": "22"
@@ -1354,7 +1453,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1367,6 +1467,9 @@
           "__compat": {
             "description": "FormData as parameter to send()",
             "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send#FormData",
+            "tags": [
+              "web-features:xhr"
+            ],
             "support": {
               "chrome": {
                 "version_added": "6"
@@ -1396,7 +1499,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1440,7 +1544,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1475,7 +1580,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1508,7 +1614,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1521,6 +1628,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/setRequestHeader",
           "spec_url": "https://xhr.spec.whatwg.org/#the-setrequestheader()-method",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1548,7 +1658,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1561,6 +1672,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/status",
           "spec_url": "https://xhr.spec.whatwg.org/#the-status-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1589,7 +1703,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1602,6 +1717,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/statusText",
           "spec_url": "https://xhr.spec.whatwg.org/#the-statustext-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1630,7 +1748,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1643,6 +1762,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/timeout",
           "spec_url": "https://xhr.spec.whatwg.org/#the-timeout-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "29"
@@ -1682,7 +1804,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1699,6 +1822,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-timeout",
             "https://xhr.spec.whatwg.org/#handler-xhr-ontimeout"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "29"
@@ -1724,7 +1850,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1737,6 +1864,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/upload",
           "spec_url": "https://xhr.spec.whatwg.org/#the-upload-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -1766,7 +1896,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1779,6 +1910,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/withCredentials",
           "spec_url": "https://xhr.spec.whatwg.org/#the-withcredentials-attribute",
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -1810,7 +1944,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XMLHttpRequestEventTarget.json b/api/XMLHttpRequestEventTarget.json
index e0d841f087b21f..4a94890ea45a11 100644
--- a/api/XMLHttpRequestEventTarget.json
+++ b/api/XMLHttpRequestEventTarget.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget",
         "spec_url": "https://xhr.spec.whatwg.org/#xmlhttprequesteventtarget",
+        "tags": [
+          "web-features:xhr"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -31,7 +34,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/XMLHttpRequestUpload.json b/api/XMLHttpRequestUpload.json
index 657046703465fe..508c01e8b13b09 100644
--- a/api/XMLHttpRequestUpload.json
+++ b/api/XMLHttpRequestUpload.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestUpload",
         "spec_url": "https://xhr.spec.whatwg.org/#xmlhttprequestupload",
+        "tags": [
+          "web-features:xhr"
+        ],
         "support": {
           "chrome": {
             "version_added": "2"
@@ -35,7 +38,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -51,6 +55,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-abort",
             "https://xhr.spec.whatwg.org/#handler-xhr-onabort"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -82,7 +89,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,6 +107,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-error",
             "https://xhr.spec.whatwg.org/#handler-xhr-onerror"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -130,7 +141,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,6 +159,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-load",
             "https://xhr.spec.whatwg.org/#handler-xhr-onload"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -178,7 +193,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -195,6 +211,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-loadend",
             "https://xhr.spec.whatwg.org/#handler-xhr-onloadend"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "18"
@@ -224,7 +243,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -241,6 +261,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-loadstart",
             "https://xhr.spec.whatwg.org/#handler-xhr-onloadstart"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -270,7 +293,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -287,6 +311,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-progress",
             "https://xhr.spec.whatwg.org/#handler-xhr-onprogress"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -318,7 +345,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,6 +363,9 @@
             "https://xhr.spec.whatwg.org/#event-xhr-timeout",
             "https://xhr.spec.whatwg.org/#handler-xhr-ontimeout"
           ],
+          "tags": [
+            "web-features:xhr"
+          ],
           "support": {
             "chrome": {
               "version_added": "29"
@@ -360,7 +391,8 @@
             "samsunginternet_android": {
               "version_added": "1.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XMLSerializer.json b/api/XMLSerializer.json
index 9f1e6ba1021174..cdc7b4f493fba4 100644
--- a/api/XMLSerializer.json
+++ b/api/XMLSerializer.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLSerializer",
         "spec_url": "https://w3c.github.io/DOM-Parsing/#the-xmlserializer-interface",
+        "tags": [
+          "web-features:xml-serializer"
+        ],
         "support": {
           "chrome": {
             "version_added": "1"
@@ -33,7 +36,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -46,6 +50,9 @@
           "description": "<code>XMLSerializer()</code> constructor",
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLSerializer/XMLSerializer",
           "spec_url": "https://w3c.github.io/DOM-Parsing/#dom-xmlserializer-constructor",
+          "tags": [
+            "web-features:xml-serializer"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -75,7 +82,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,6 +96,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLSerializer/serializeToString",
           "spec_url": "https://w3c.github.io/DOM-Parsing/#dom-xmlserializer-serializetostring",
+          "tags": [
+            "web-features:xml-serializer"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -117,7 +128,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XPathEvaluator.json b/api/XPathEvaluator.json
index d2301fceb9f841..c909bc3c1d847d 100644
--- a/api/XPathEvaluator.json
+++ b/api/XPathEvaluator.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -159,7 +162,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -201,7 +205,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XPathExpression.json b/api/XPathExpression.json
index a97b6b0b99577f..9608903ef186fe 100644
--- a/api/XPathExpression.json
+++ b/api/XPathExpression.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XPathResult.json b/api/XPathResult.json
index 66f75c7e8aee7b..a522d83d5a9c3b 100644
--- a/api/XPathResult.json
+++ b/api/XPathResult.json
@@ -33,7 +33,8 @@
             "version_added": "1"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -118,7 +120,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -160,7 +163,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -202,7 +206,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -246,7 +251,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -288,7 +294,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -330,7 +337,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -372,7 +380,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -414,7 +423,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRAnchor.json b/api/XRAnchor.json
index 29732fd7e1ccbe..08eda1c70d0735 100644
--- a/api/XRAnchor.json
+++ b/api/XRAnchor.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRAnchorSet.json b/api/XRAnchorSet.json
index 774d8c8af8c9a5..3acf0e32f05a68 100644
--- a/api/XRAnchorSet.json
+++ b/api/XRAnchorSet.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -60,7 +61,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -94,7 +96,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -128,7 +131,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -162,7 +166,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -196,7 +201,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -230,7 +236,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -265,7 +272,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRBoundedReferenceSpace.json b/api/XRBoundedReferenceSpace.json
index 46848633a62502..8d055e918746c9 100644
--- a/api/XRBoundedReferenceSpace.json
+++ b/api/XRBoundedReferenceSpace.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -66,7 +67,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRCPUDepthInformation.json b/api/XRCPUDepthInformation.json
index 35e74ab7660ae5..016d492ae98332 100644
--- a/api/XRCPUDepthInformation.json
+++ b/api/XRCPUDepthInformation.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRCamera.json b/api/XRCamera.json
index 6fdb62a26fba6b..7361b896a42a98 100644
--- a/api/XRCamera.json
+++ b/api/XRCamera.json
@@ -26,7 +26,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -60,7 +61,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -95,7 +97,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRCompositionLayer.json b/api/XRCompositionLayer.json
index 9d649b746c17bd..0946d921f12802 100644
--- a/api/XRCompositionLayer.json
+++ b/api/XRCompositionLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRCubeLayer.json b/api/XRCubeLayer.json
index baede72d25a6ae..107d2f89bc49df 100644
--- a/api/XRCubeLayer.json
+++ b/api/XRCubeLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRCylinderLayer.json b/api/XRCylinderLayer.json
index 7c2e5ffd1ed4f4..82aafafd8f68bc 100644
--- a/api/XRCylinderLayer.json
+++ b/api/XRCylinderLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -207,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -243,7 +249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRDepthInformation.json b/api/XRDepthInformation.json
index 9ff2ea4013f73e..97dcbdf10c93a3 100644
--- a/api/XRDepthInformation.json
+++ b/api/XRDepthInformation.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XREquirectLayer.json b/api/XREquirectLayer.json
index c1cf3498f8df91..68994bfc8f078b 100644
--- a/api/XREquirectLayer.json
+++ b/api/XREquirectLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -207,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -243,7 +249,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -279,7 +286,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRFrame.json b/api/XRFrame.json
index c7c8697966e6bf..4b58cc0846ab7a 100644
--- a/api/XRFrame.json
+++ b/api/XRFrame.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -64,7 +65,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -180,7 +184,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -216,7 +221,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -252,7 +258,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -292,7 +299,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -328,7 +336,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -367,7 +376,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -406,7 +416,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -444,7 +455,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -480,7 +492,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRHand.json b/api/XRHand.json
index c6944babb24f41..8e3eb8e288fbcb 100644
--- a/api/XRHand.json
+++ b/api/XRHand.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -138,7 +141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -174,7 +178,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -210,7 +215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -246,7 +252,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -283,7 +290,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRHitTestResult.json b/api/XRHitTestResult.json
index a298bc9a30f3cd..b53dd8c43d0033 100644
--- a/api/XRHitTestResult.json
+++ b/api/XRHitTestResult.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRHitTestSource.json b/api/XRHitTestSource.json
index 618c2089f824cc..c6008583956dd0 100644
--- a/api/XRHitTestSource.json
+++ b/api/XRHitTestSource.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRInputSource.json b/api/XRInputSource.json
index 4d85cb073e705d..2b29773be4d450 100644
--- a/api/XRInputSource.json
+++ b/api/XRInputSource.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +147,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +186,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -220,7 +225,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -258,7 +264,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -296,7 +303,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRInputSourceArray.json b/api/XRInputSourceArray.json
index 52ff8ce0082743..39d0ee63b8da19 100644
--- a/api/XRInputSourceArray.json
+++ b/api/XRInputSourceArray.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -66,7 +67,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -141,7 +144,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,7 +183,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -216,7 +221,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -251,7 +257,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRInputSourceEvent.json b/api/XRInputSourceEvent.json
index 61603c20ac65f5..aab258e1bec90c 100644
--- a/api/XRInputSourceEvent.json
+++ b/api/XRInputSourceEvent.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRInputSourcesChangeEvent.json b/api/XRInputSourcesChangeEvent.json
index 013b69ccbf3a4d..9f8fa7ba1359fd 100644
--- a/api/XRInputSourcesChangeEvent.json
+++ b/api/XRInputSourcesChangeEvent.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRJointPose.json b/api/XRJointPose.json
index 5e600c01039163..6d337b22097337 100644
--- a/api/XRJointPose.json
+++ b/api/XRJointPose.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRJointSpace.json b/api/XRJointSpace.json
index ef9a5f39653fe6..7950c94d0d3771 100644
--- a/api/XRJointSpace.json
+++ b/api/XRJointSpace.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +71,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRLayer.json b/api/XRLayer.json
index 5cf1adc40cecf1..24d92329e3d83d 100644
--- a/api/XRLayer.json
+++ b/api/XRLayer.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/api/XRLayerEvent.json b/api/XRLayerEvent.json
index dde7d5f6377bb8..e116b06e4dbdcf 100644
--- a/api/XRLayerEvent.json
+++ b/api/XRLayerEvent.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRLightEstimate.json b/api/XRLightEstimate.json
index 1a6fb65d8189c4..82e3e4807bae76 100644
--- a/api/XRLightEstimate.json
+++ b/api/XRLightEstimate.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRLightProbe.json b/api/XRLightProbe.json
index 816c51b1bc2538..32ae71ad4e7875 100644
--- a/api/XRLightProbe.json
+++ b/api/XRLightProbe.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -102,7 +104,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRMediaBinding.json b/api/XRMediaBinding.json
index b54555473aa8cf..ba80f902ce9b88 100644
--- a/api/XRMediaBinding.json
+++ b/api/XRMediaBinding.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRPose.json b/api/XRPose.json
index a9a4ce5edd3f55..f341c0569fde05 100644
--- a/api/XRPose.json
+++ b/api/XRPose.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -144,7 +147,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -182,7 +186,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRProjectionLayer.json b/api/XRProjectionLayer.json
index 93c13bdb07f418..9d38e57257dfe3 100644
--- a/api/XRProjectionLayer.json
+++ b/api/XRProjectionLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRQuadLayer.json b/api/XRQuadLayer.json
index c84cbf5c2673d6..59eaf215d101a1 100644
--- a/api/XRQuadLayer.json
+++ b/api/XRQuadLayer.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -207,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRRay.json b/api/XRRay.json
index 3199c0b8bfa30f..6a11ab7a9b3589 100644
--- a/api/XRRay.json
+++ b/api/XRRay.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -99,7 +101,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -135,7 +138,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -171,7 +175,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRReferenceSpace.json b/api/XRReferenceSpace.json
index 121d10cc5d209b..5e8ff4e6d864e5 100644
--- a/api/XRReferenceSpace.json
+++ b/api/XRReferenceSpace.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRReferenceSpaceEvent.json b/api/XRReferenceSpaceEvent.json
index 7688f55fc4b997..7850b11a440360 100644
--- a/api/XRReferenceSpaceEvent.json
+++ b/api/XRReferenceSpaceEvent.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRRenderState.json b/api/XRRenderState.json
index 592a9ed57e3543..5d2c0427427d3c 100644
--- a/api/XRRenderState.json
+++ b/api/XRRenderState.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRRigidTransform.json b/api/XRRigidTransform.json
index 4c7314f22fd95e..917c32ab944a53 100644
--- a/api/XRRigidTransform.json
+++ b/api/XRRigidTransform.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +146,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -219,7 +224,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRSession.json b/api/XRSession.json
index acd453d5b4c107..eb5bb4ff0ddcb7 100644
--- a/api/XRSession.json
+++ b/api/XRSession.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -139,7 +142,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +179,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -210,7 +215,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -249,7 +255,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -291,7 +298,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -329,7 +337,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -367,7 +376,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -409,7 +419,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -445,7 +456,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -481,7 +493,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -519,7 +532,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -558,7 +572,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -596,7 +611,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -632,7 +648,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -668,7 +685,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -707,7 +725,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -749,7 +768,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -791,7 +811,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -833,7 +854,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -873,7 +895,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -913,7 +936,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -953,7 +977,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -992,7 +1017,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1034,7 +1060,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1072,7 +1099,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRSessionEvent.json b/api/XRSessionEvent.json
index ac296545ad186c..8068f9316c7d8d 100644
--- a/api/XRSessionEvent.json
+++ b/api/XRSessionEvent.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRSpace.json b/api/XRSpace.json
index 1dfd7915a4083d..388f4b169d9af9 100644
--- a/api/XRSpace.json
+++ b/api/XRSpace.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/XRSubImage.json b/api/XRSubImage.json
index 9ea599d3ba2d2e..6564510ccf1d47 100644
--- a/api/XRSubImage.json
+++ b/api/XRSubImage.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRSystem.json b/api/XRSystem.json
index 886ad6b73677e5..4dfe1972079869 100644
--- a/api/XRSystem.json
+++ b/api/XRSystem.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -66,7 +67,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -103,7 +105,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -140,7 +143,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRTransientInputHitTestResult.json b/api/XRTransientInputHitTestResult.json
index abe4c5e58b20e6..ab720b30f7d73f 100644
--- a/api/XRTransientInputHitTestResult.json
+++ b/api/XRTransientInputHitTestResult.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRTransientInputHitTestSource.json b/api/XRTransientInputHitTestSource.json
index 07b6984c183215..2befd1713d5640 100644
--- a/api/XRTransientInputHitTestSource.json
+++ b/api/XRTransientInputHitTestSource.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRView.json b/api/XRView.json
index f8605729592de8..5aff67cec734d4 100644
--- a/api/XRView.json
+++ b/api/XRView.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -63,7 +64,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -101,7 +103,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -141,7 +144,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,7 +183,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -215,7 +220,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -251,7 +257,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -289,7 +296,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRViewerPose.json b/api/XRViewerPose.json
index 2d37213c7a9394..28252c9ab345c9 100644
--- a/api/XRViewerPose.json
+++ b/api/XRViewerPose.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRViewport.json b/api/XRViewport.json
index 1d1640b2406519..ac7f7bd027e389 100644
--- a/api/XRViewport.json
+++ b/api/XRViewport.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -66,7 +67,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +145,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -180,7 +184,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/XRWebGLBinding.json b/api/XRWebGLBinding.json
index 0d9d6e28d584f9..c1fc2672c42aa0 100644
--- a/api/XRWebGLBinding.json
+++ b/api/XRWebGLBinding.json
@@ -25,7 +25,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -95,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -131,7 +134,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -167,7 +171,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -203,7 +208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -239,7 +245,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -274,7 +281,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -310,7 +318,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -346,7 +355,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -382,7 +392,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -418,7 +429,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -454,7 +466,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRWebGLDepthInformation.json b/api/XRWebGLDepthInformation.json
index facf3ce75b8b50..4625a816732187 100644
--- a/api/XRWebGLDepthInformation.json
+++ b/api/XRWebGLDepthInformation.json
@@ -27,7 +27,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRWebGLLayer.json b/api/XRWebGLLayer.json
index 0d5352903fb99c..9924b104f7e62a 100644
--- a/api/XRWebGLLayer.json
+++ b/api/XRWebGLLayer.json
@@ -29,7 +29,8 @@
           },
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -67,7 +68,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -105,7 +107,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -179,7 +183,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -217,7 +222,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -255,7 +261,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -294,7 +301,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -333,7 +341,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -371,7 +380,8 @@
             },
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XRWebGLSubImage.json b/api/XRWebGLSubImage.json
index 67096c0786073c..468706c751445b 100644
--- a/api/XRWebGLSubImage.json
+++ b/api/XRWebGLSubImage.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
@@ -62,7 +63,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -98,7 +100,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -134,7 +137,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -170,7 +174,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -206,7 +211,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/api/XSLTProcessor.json b/api/XSLTProcessor.json
index c016ff40a0725a..d79fcc5b6cb8e3 100644
--- a/api/XSLTProcessor.json
+++ b/api/XSLTProcessor.json
@@ -33,7 +33,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "3"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -117,7 +119,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +168,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "WebView only supports string values."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,7 +211,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -249,7 +254,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -291,7 +297,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -339,7 +346,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "WebView only supports string values."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -394,7 +402,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "WebView returns <code>null</code> if an error occurs."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -449,7 +458,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "WebView returns <code>null</code> if an error occurs."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/atob.json b/api/_globals/atob.json
index bcd4d2c74dcbf7..78904078dcbb75 100644
--- a/api/_globals/atob.json
+++ b/api/_globals/atob.json
@@ -41,7 +41,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/btoa.json b/api/_globals/btoa.json
index a0b79cf3b24478..af931fb1893fe2 100644
--- a/api/_globals/btoa.json
+++ b/api/_globals/btoa.json
@@ -41,7 +41,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -81,7 +82,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/caches.json b/api/_globals/caches.json
index ab484518059cac..a60f4a59e87a34 100644
--- a/api/_globals/caches.json
+++ b/api/_globals/caches.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -103,7 +105,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/clearInterval.json b/api/_globals/clearInterval.json
index d9ba446b5b6a77..5f0885a5796e2d 100644
--- a/api/_globals/clearInterval.json
+++ b/api/_globals/clearInterval.json
@@ -42,7 +42,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -90,7 +91,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/clearTimeout.json b/api/_globals/clearTimeout.json
index 3a4da43732f8fa..92373307b07a48 100644
--- a/api/_globals/clearTimeout.json
+++ b/api/_globals/clearTimeout.json
@@ -44,7 +44,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -92,7 +93,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/console.json b/api/_globals/console.json
index 557b0c3d7bafae..c443509aa17b36 100644
--- a/api/_globals/console.json
+++ b/api/_globals/console.json
@@ -42,7 +42,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -86,7 +87,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +144,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -189,7 +192,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -238,7 +242,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +255,7 @@
       "countReset_static": {
         "__compat": {
           "description": "<code>countReset()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/countreset_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/countReset_static",
           "spec_url": "https://console.spec.whatwg.org/#countreset",
           "support": {
             "chrome": {
@@ -279,7 +284,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -329,7 +335,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +385,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -416,7 +424,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -455,7 +464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -494,7 +504,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -551,7 +562,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -600,7 +612,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -642,7 +655,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -691,7 +705,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -703,7 +718,7 @@
       "groupCollapsed_static": {
         "__compat": {
           "description": "<code>groupCollapsed()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/groupcollapsed_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/groupCollapsed_static",
           "spec_url": "https://console.spec.whatwg.org/#groupcollapsed",
           "support": {
             "chrome": {
@@ -741,7 +756,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -753,7 +769,7 @@
       "groupEnd_static": {
         "__compat": {
           "description": "<code>groupEnd()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/groupend_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/groupEnd_static",
           "spec_url": "https://console.spec.whatwg.org/#groupend",
           "support": {
             "chrome": {
@@ -790,7 +806,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -840,7 +857,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -889,7 +907,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -944,7 +963,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -956,7 +976,7 @@
       "profileEnd_static": {
         "__compat": {
           "description": "<code>profileEnd()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/profileend_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/profileEnd_static",
           "support": {
             "chrome": {
               "version_added": "5"
@@ -998,7 +1018,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1064,7 +1085,8 @@
             "webview_android": {
               "version_added": "≤37",
               "notes": "In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1111,7 +1133,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1160,7 +1183,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1172,7 +1196,7 @@
       "timeEnd_static": {
         "__compat": {
           "description": "<code>timeEnd()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timeend_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timeEnd_static",
           "spec_url": "https://console.spec.whatwg.org/#timeend",
           "support": {
             "chrome": {
@@ -1209,7 +1233,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1221,7 +1246,7 @@
       "timeLog_static": {
         "__compat": {
           "description": "<code>timeLog()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timelog_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timeLog_static",
           "spec_url": "https://console.spec.whatwg.org/#timelog",
           "support": {
             "chrome": {
@@ -1252,7 +1277,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1264,7 +1290,7 @@
       "timeStamp_static": {
         "__compat": {
           "description": "<code>timeStamp()</code> static method",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timestamp_static",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/console/timeStamp_static",
           "support": {
             "chrome": {
               "version_added": "15"
@@ -1302,7 +1328,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1351,7 +1378,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1401,7 +1429,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/createImageBitmap.json b/api/_globals/createImageBitmap.json
index e4a36ff90f734d..5d9a15195b16b9 100644
--- a/api/_globals/createImageBitmap.json
+++ b/api/_globals/createImageBitmap.json
@@ -29,7 +29,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -244,7 +250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -280,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -316,7 +324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -352,7 +361,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/crossOriginIsolated.json b/api/_globals/crossOriginIsolated.json
index 83b7932c91387f..06401586a3574b 100644
--- a/api/_globals/crossOriginIsolated.json
+++ b/api/_globals/crossOriginIsolated.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/crypto.json b/api/_globals/crypto.json
index 17e7471c918eb2..a5b111f6caa347 100644
--- a/api/_globals/crypto.json
+++ b/api/_globals/crypto.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/crypto",
         "spec_url": "https://w3c.github.io/webcrypto/#dom-windoworworkerglobalscope-crypto",
+        "tags": [
+          "web-features:web-cryptography"
+        ],
         "support": {
           "chrome": {
             "version_added": "37"
@@ -36,7 +39,8 @@
             "version_added": "5"
           },
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/fetch.json b/api/_globals/fetch.json
index e8faffb7ce612b..412025d16502d9 100644
--- a/api/_globals/fetch.json
+++ b/api/_globals/fetch.json
@@ -4,6 +4,9 @@
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/fetch",
         "spec_url": "https://fetch.spec.whatwg.org/#fetch-method",
+        "tags": [
+          "web-features:fetch"
+        ],
         "support": {
           "chrome": {
             "version_added": "42"
@@ -34,7 +37,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -70,7 +74,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -108,7 +113,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "43"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -142,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -175,7 +182,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -213,7 +221,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -252,7 +261,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -290,7 +300,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -334,7 +345,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/indexedDB.json b/api/_globals/indexedDB.json
index 77da8e69aa9e89..5601ff1ea45f83 100644
--- a/api/_globals/indexedDB.json
+++ b/api/_globals/indexedDB.json
@@ -38,7 +38,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/isSecureContext.json b/api/_globals/isSecureContext.json
index ee362a00f9362b..b983cb31857fd4 100644
--- a/api/_globals/isSecureContext.json
+++ b/api/_globals/isSecureContext.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -65,7 +66,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/origin.json b/api/_globals/origin.json
index d7d978c4bfa513..34345a203a6fc4 100644
--- a/api/_globals/origin.json
+++ b/api/_globals/origin.json
@@ -30,7 +30,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/performance.json b/api/_globals/performance.json
index 3b5c6b9ff4c782..819a5e1930bb2a 100644
--- a/api/_globals/performance.json
+++ b/api/_globals/performance.json
@@ -37,7 +37,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": "≤37"
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -74,7 +75,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/queueMicrotask.json b/api/_globals/queueMicrotask.json
index c0d5ddbf8d79a5..60239a98576f3e 100644
--- a/api/_globals/queueMicrotask.json
+++ b/api/_globals/queueMicrotask.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/reportError.json b/api/_globals/reportError.json
index 61603918112c44..cb380464ff7e89 100644
--- a/api/_globals/reportError.json
+++ b/api/_globals/reportError.json
@@ -31,7 +31,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/scheduler.json b/api/_globals/scheduler.json
index 9fc6279345c47d..4bbaab1c2e43cc 100644
--- a/api/_globals/scheduler.json
+++ b/api/_globals/scheduler.json
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/setInterval.json b/api/_globals/setInterval.json
index a392b6faeddee2..983da2f6bee0d6 100644
--- a/api/_globals/setInterval.json
+++ b/api/_globals/setInterval.json
@@ -42,7 +42,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -88,7 +89,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/setTimeout.json b/api/_globals/setTimeout.json
index ce0f8269c354ac..3db6a841440437 100644
--- a/api/_globals/setTimeout.json
+++ b/api/_globals/setTimeout.json
@@ -42,7 +42,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -88,7 +89,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -135,7 +137,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/api/_globals/structuredClone.json b/api/_globals/structuredClone.json
index 36389f2e5a64f2..be4a95ee3e42c0 100644
--- a/api/_globals/structuredClone.json
+++ b/api/_globals/structuredClone.json
@@ -46,7 +46,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/api/_globals/trustedTypes.json b/api/_globals/trustedTypes.json
index 5138be915636e8..61b50b81327e54 100644
--- a/api/_globals/trustedTypes.json
+++ b/api/_globals/trustedTypes.json
@@ -28,7 +28,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/browsers/chrome.json b/browsers/chrome.json
index 88dafe70fd1ae1..e583c12cca45b2 100644
--- a/browsers/chrome.json
+++ b/browsers/chrome.json
@@ -886,15 +886,28 @@
         "127": {
           "release_date": "2024-07-23",
           "release_notes": "https://developer.chrome.com/release-notes/127",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "127"
         },
         "128": {
           "release_date": "2024-08-20",
-          "status": "beta",
+          "release_notes": "https://developer.chrome.com/release-notes/128",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "128"
+        },
+        "129": {
+          "release_date": "2024-09-17",
+          "status": "current",
+          "engine": "Blink",
+          "engine_version": "129"
+        },
+        "130": {
+          "release_date": "2024-10-15",
+          "status": "beta",
+          "engine": "Blink",
+          "engine_version": "130"
         }
       }
     }
diff --git a/browsers/chrome_android.json b/browsers/chrome_android.json
index 97be10a380e3f6..d4e8d860870f42 100644
--- a/browsers/chrome_android.json
+++ b/browsers/chrome_android.json
@@ -723,15 +723,28 @@
         "127": {
           "release_date": "2024-07-23",
           "release_notes": "https://developer.chrome.com/release-notes/127",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "127"
         },
         "128": {
           "release_date": "2024-08-20",
-          "status": "beta",
+          "release_notes": "https://developer.chrome.com/release-notes/128",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "128"
+        },
+        "129": {
+          "release_date": "2024-09-17",
+          "status": "current",
+          "engine": "Blink",
+          "engine_version": "129"
+        },
+        "130": {
+          "release_date": "2024-10-15",
+          "status": "beta",
+          "engine": "Blink",
+          "engine_version": "130"
         }
       }
     }
diff --git a/browsers/edge.json b/browsers/edge.json
index 539cc057533353..438f977af3bf11 100644
--- a/browsers/edge.json
+++ b/browsers/edge.json
@@ -374,14 +374,14 @@
         },
         "125": {
           "release_date": "2024-05-17",
-          "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-stable-channel#version-1250253551-may-17-2024",
+          "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-archive-stable-channel#version-1250253551-may-17-2024",
           "status": "retired",
           "engine": "Blink",
           "engine_version": "125"
         },
         "126": {
           "release_date": "2024-06-13",
-          "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-stable-channel#version-1260259256-june-13-2024",
+          "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-archive-stable-channel#version-1260259256-june-13-2024",
           "status": "retired",
           "engine": "Blink",
           "engine_version": "126"
@@ -389,27 +389,34 @@
         "127": {
           "release_date": "2024-07-25",
           "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-stable-channel#version-1270265174-july-25-2024",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "127"
         },
         "128": {
           "release_date": "2024-08-22",
-          "status": "beta",
+          "release_notes": "https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-stable-channel#version-1280273942-august-22-2024",
+          "status": "current",
           "engine": "Blink",
           "engine_version": "128"
         },
         "129": {
           "release_date": "2024-09-19",
-          "status": "nightly",
+          "status": "beta",
           "engine": "Blink",
           "engine_version": "129"
         },
         "130": {
           "release_date": "2024-10-17",
-          "status": "planned",
+          "status": "nightly",
           "engine": "Blink",
           "engine_version": "130"
+        },
+        "131": {
+          "release_date": "2024-11-14",
+          "status": "planned",
+          "engine": "Blink",
+          "engine_version": "131"
         }
       }
     }
diff --git a/browsers/firefox.json b/browsers/firefox.json
index aca4e312938f61..ed3374263e752c 100644
--- a/browsers/firefox.json
+++ b/browsers/firefox.json
@@ -928,30 +928,37 @@
         "129": {
           "release_date": "2024-08-06",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/129",
-          "status": "current",
+          "status": "retired",
           "engine": "Gecko",
           "engine_version": "129"
         },
         "130": {
           "release_date": "2024-09-03",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/130",
-          "status": "beta",
+          "status": "current",
           "engine": "Gecko",
           "engine_version": "130"
         },
         "131": {
           "release_date": "2024-10-01",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/131",
-          "status": "nightly",
+          "status": "beta",
           "engine": "Gecko",
           "engine_version": "131"
         },
         "132": {
           "release_date": "2024-10-29",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/132",
-          "status": "planned",
+          "status": "nightly",
           "engine": "Gecko",
           "engine_version": "132"
+        },
+        "133": {
+          "release_date": "2024-11-26",
+          "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/133",
+          "status": "planned",
+          "engine": "Gecko",
+          "engine_version": "133"
         }
       }
     }
diff --git a/browsers/firefox_android.json b/browsers/firefox_android.json
index 755c016e6e092e..628538bff19f1e 100644
--- a/browsers/firefox_android.json
+++ b/browsers/firefox_android.json
@@ -795,30 +795,37 @@
         "129": {
           "release_date": "2024-08-06",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/129",
-          "status": "current",
+          "status": "retired",
           "engine": "Gecko",
           "engine_version": "129"
         },
         "130": {
           "release_date": "2024-09-03",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/130",
-          "status": "beta",
+          "status": "current",
           "engine": "Gecko",
           "engine_version": "130"
         },
         "131": {
           "release_date": "2024-10-01",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/131",
-          "status": "nightly",
+          "status": "beta",
           "engine": "Gecko",
           "engine_version": "131"
         },
         "132": {
           "release_date": "2024-10-29",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/132",
-          "status": "planned",
+          "status": "nightly",
           "engine": "Gecko",
           "engine_version": "132"
+        },
+        "133": {
+          "release_date": "2024-11-26",
+          "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/133",
+          "status": "planned",
+          "engine": "Gecko",
+          "engine_version": "133"
         }
       }
     }
diff --git a/browsers/nodejs.json b/browsers/nodejs.json
index 663a89b3aa6743..82dd311311a1b2 100644
--- a/browsers/nodejs.json
+++ b/browsers/nodejs.json
@@ -457,6 +457,27 @@
         "18.17.0": {
           "release_date": "2023-07-18",
           "release_notes": "https://nodejs.org/en/blog/release/v18.17.0/",
+          "status": "retired",
+          "engine": "V8",
+          "engine_version": "10.2"
+        },
+        "18.18.0": {
+          "release_date": "2023-09-18",
+          "release_notes": "https://nodejs.org/en/blog/release/v18.18.0/",
+          "status": "retired",
+          "engine": "V8",
+          "engine_version": "10.2"
+        },
+        "18.19.0": {
+          "release_date": "2023-11-29",
+          "release_notes": "https://nodejs.org/en/blog/release/v18.19.0/",
+          "status": "retired",
+          "engine": "V8",
+          "engine_version": "10.2"
+        },
+        "18.20.0": {
+          "release_date": "2024-03-26",
+          "release_notes": "https://nodejs.org/en/blog/release/v18.20.0/",
           "status": "esr",
           "engine": "V8",
           "engine_version": "10.2"
diff --git a/browsers/opera.json b/browsers/opera.json
index 24b453fdb25f48..1f5ee1a86a3fda 100644
--- a/browsers/opera.json
+++ b/browsers/opera.json
@@ -837,19 +837,33 @@
         "111": {
           "release_date": "2024-06-12",
           "release_notes": "https://blogs.opera.com/desktop/2024/06/opera-111/",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "125"
         },
         "112": {
-          "status": "beta",
+          "release_date": "2024-07-11",
+          "release_notes": "https://blogs.opera.com/desktop/2024/07/opera-112/",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "126"
         },
         "113": {
-          "status": "nightly",
+          "release_date": "2024-08-22",
+          "release_notes": "https://blogs.opera.com/desktop/2024/08/opera-113/",
+          "status": "current",
           "engine": "Blink",
           "engine_version": "127"
+        },
+        "114": {
+          "status": "beta",
+          "engine": "Blink",
+          "engine_version": "128"
+        },
+        "115": {
+          "status": "nightly",
+          "engine": "Blink",
+          "engine_version": "129"
         }
       }
     }
diff --git a/browsers/opera_android.json b/browsers/opera_android.json
index a9238b161b4d62..c0f926535c4946 100644
--- a/browsers/opera_android.json
+++ b/browsers/opera_android.json
@@ -480,9 +480,15 @@
         "83": {
           "release_date": "2024-06-25",
           "release_notes": "https://blogs.opera.com/mobile/2024/06/opera-android-version-image-generation/",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "126"
+        },
+        "84": {
+          "release_date": "2024-08-26",
+          "status": "current",
+          "engine": "Blink",
+          "engine_version": "127"
         }
       }
     }
diff --git a/browsers/safari.json b/browsers/safari.json
index 6c6358ce6c11de..f1e46dc523f102 100644
--- a/browsers/safari.json
+++ b/browsers/safari.json
@@ -307,16 +307,16 @@
         "17.5": {
           "release_date": "2024-05-13",
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_5-release-notes",
-          "status": "current",
+          "status": "retired",
           "engine": "WebKit",
           "engine_version": "618.2.12"
         },
         "17.6": {
-          "release_date": "2024-06-17",
+          "release_date": "2024-07-29",
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_6-release-notes",
-          "status": "beta",
+          "status": "current",
           "engine": "WebKit",
-          "engine_version": "618.3.7"
+          "engine_version": "618.3.11"
         },
         "18": {
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-18-release-notes",
diff --git a/browsers/safari_ios.json b/browsers/safari_ios.json
index e4b946f0eeeb06..1d1f35e78b4af6 100644
--- a/browsers/safari_ios.json
+++ b/browsers/safari_ios.json
@@ -279,16 +279,16 @@
         "17.5": {
           "release_date": "2024-05-13",
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_5-release-notes",
-          "status": "current",
+          "status": "retired",
           "engine": "WebKit",
           "engine_version": "618.2.12"
         },
         "17.6": {
-          "release_date": "2024-06-17",
+          "release_date": "2024-07-29",
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_6-release-notes",
-          "status": "beta",
+          "status": "current",
           "engine": "WebKit",
-          "engine_version": "618.3.7"
+          "engine_version": "618.3.11"
         },
         "18": {
           "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-18-release-notes",
diff --git a/browsers/samsunginternet_android.json b/browsers/samsunginternet_android.json
index cd8a8a4ed4e678..b2b59bffe5dbdf 100644
--- a/browsers/samsunginternet_android.json
+++ b/browsers/samsunginternet_android.json
@@ -285,9 +285,20 @@
         },
         "25.0": {
           "release_date": "2024-04-24",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "121"
+        },
+        "26.0": {
+          "release_date": "2024-06-07",
+          "status": "current",
+          "engine": "Blink",
+          "engine_version": "122"
+        },
+        "27.0": {
+          "status": "beta",
+          "engine": "Blink",
+          "engine_version": "125"
         }
       }
     }
diff --git a/browsers/webview_android.json b/browsers/webview_android.json
index b413142b5a45ae..5d2abe1fdffacf 100644
--- a/browsers/webview_android.json
+++ b/browsers/webview_android.json
@@ -685,15 +685,28 @@
         "127": {
           "release_date": "2024-07-23",
           "release_notes": "https://developer.chrome.com/release-notes/127",
-          "status": "current",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "127"
         },
         "128": {
           "release_date": "2024-08-20",
-          "status": "beta",
+          "release_notes": "https://developer.chrome.com/release-notes/128",
+          "status": "retired",
           "engine": "Blink",
           "engine_version": "128"
+        },
+        "129": {
+          "release_date": "2024-09-17",
+          "status": "current",
+          "engine": "Blink",
+          "engine_version": "129"
+        },
+        "130": {
+          "release_date": "2024-10-15",
+          "status": "beta",
+          "engine": "Blink",
+          "engine_version": "130"
         }
       }
     }
diff --git a/browsers/webview_ios.json b/browsers/webview_ios.json
new file mode 100644
index 00000000000000..2e77b6643e1a49
--- /dev/null
+++ b/browsers/webview_ios.json
@@ -0,0 +1,302 @@
+{
+  "browsers": {
+    "webview_ios": {
+      "name": "WebView on iOS",
+      "type": "mobile",
+      "upstream": "safari_ios",
+      "accepts_flags": false,
+      "accepts_webextensions": false,
+      "releases": {
+        "1": {
+          "release_date": "2007-06-29",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "522.11"
+        },
+        "2": {
+          "release_date": "2008-07-11",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "525.18"
+        },
+        "3": {
+          "release_date": "2009-06-17",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "528.18"
+        },
+        "3.2": {
+          "release_date": "2010-04-03",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "531.21"
+        },
+        "4": {
+          "release_date": "2010-06-21",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "532.9"
+        },
+        "4.2": {
+          "release_date": "2010-11-22",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "533.17"
+        },
+        "5": {
+          "release_date": "2011-10-12",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "534.46"
+        },
+        "6": {
+          "release_date": "2012-09-10",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "536.26"
+        },
+        "7": {
+          "release_date": "2013-09-18",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "537.51"
+        },
+        "8": {
+          "release_date": "2014-09-17",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "600.1.4"
+        },
+        "9": {
+          "release_date": "2015-09-16",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "601.1.56"
+        },
+        "9.3": {
+          "release_date": "2016-03-21",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "601.5.17"
+        },
+        "10": {
+          "release_date": "2016-09-13",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "602.1.50"
+        },
+        "10.3": {
+          "release_date": "2017-03-27",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "603.2.1"
+        },
+        "11": {
+          "release_date": "2017-09-19",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "604.2.4"
+        },
+        "11.3": {
+          "release_date": "2018-03-29",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "605.1.33"
+        },
+        "12": {
+          "release_date": "2018-09-17",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-12-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "606.1.36"
+        },
+        "12.2": {
+          "release_date": "2019-03-25",
+          "release_notes": "https://developer.apple.com/documentation/safari_release_notes/safari_12_1_release_notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "607.1.40"
+        },
+        "13": {
+          "release_date": "2019-09-19",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-13-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "608.2.11"
+        },
+        "13.4": {
+          "release_date": "2020-03-24",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-13_1-release_notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "609.1.20"
+        },
+        "14": {
+          "release_date": "2020-09-16",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-14-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "610.1.28"
+        },
+        "14.5": {
+          "release_date": "2021-04-26",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-14_1-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "611.1.21"
+        },
+        "15": {
+          "release_date": "2021-09-20",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-15-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "612.1.27"
+        },
+        "15.1": {
+          "release_date": "2021-10-25",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "612.2.9"
+        },
+        "15.2": {
+          "release_date": "2021-12-13",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-15_2-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "612.3.6"
+        },
+        "15.3": {
+          "release_date": "2022-01-26",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "612.4.9"
+        },
+        "15.4": {
+          "release_date": "2022-03-14",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-15_4-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "613.1.17"
+        },
+        "15.5": {
+          "release_date": "2022-05-16",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-15_5-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "613.2.7"
+        },
+        "15.6": {
+          "release_date": "2022-07-20",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-15_6-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "613.3.9"
+        },
+        "16": {
+          "release_date": "2022-09-12",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "614.1.25"
+        },
+        "16.1": {
+          "release_date": "2022-10-24",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_1-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "614.2.9"
+        },
+        "16.2": {
+          "release_date": "2022-12-13",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_2-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "614.3.7"
+        },
+        "16.3": {
+          "release_date": "2023-01-23",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_3-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "614.4.6"
+        },
+        "16.4": {
+          "release_date": "2023-03-27",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_4-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "615.1.26"
+        },
+        "16.5": {
+          "release_date": "2023-05-18",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_5-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "615.2.9"
+        },
+        "16.6": {
+          "release_date": "2023-07-24",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-16_6-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "615.3.12"
+        },
+        "17": {
+          "release_date": "2023-09-18",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "616.1.27"
+        },
+        "17.1": {
+          "release_date": "2023-10-25",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_1-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "616.2.9"
+        },
+        "17.2": {
+          "release_date": "2023-12-11",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_2-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "617.1.17"
+        },
+        "17.3": {
+          "release_date": "2024-01-22",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_3-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "617.2.4"
+        },
+        "17.4": {
+          "release_date": "2024-03-05",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_4-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "618.1.15"
+        },
+        "17.5": {
+          "release_date": "2024-05-13",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_5-release-notes",
+          "status": "retired",
+          "engine": "WebKit",
+          "engine_version": "618.2.12"
+        },
+        "17.6": {
+          "release_date": "2024-07-29",
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-17_6-release-notes",
+          "status": "current",
+          "engine": "WebKit",
+          "engine_version": "618.3.11"
+        },
+        "18": {
+          "release_notes": "https://developer.apple.com/documentation/safari-release-notes/safari-18-release-notes",
+          "status": "beta",
+          "engine": "WebKit",
+          "engine_version": "619.1.15"
+        }
+      }
+    }
+  }
+}
diff --git a/css/at-rules/charset.json b/css/at-rules/charset.json
index 57d07e51a3c21e..41f2886812b18c 100644
--- a/css/at-rules/charset.json
+++ b/css/at-rules/charset.json
@@ -41,7 +41,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/container.json b/css/at-rules/container.json
index 541336ae716055..b2b20240371fb1 100644
--- a/css/at-rules/container.json
+++ b/css/at-rules/container.json
@@ -5,7 +5,7 @@
         "__compat": {
           "description": "<code>@container</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@container",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#container-rule",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#container-rule",
           "tags": [
             "web-features:container-queries"
           ],
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -42,7 +43,7 @@
           "__compat": {
             "description": "Style queries for custom properties",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@container",
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#style-container",
+            "spec_url": "https://drafts.csswg.org/css-conditional-5/#style-container",
             "tags": [
               "web-features:container-style-queries"
             ],
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/counter-style.json b/css/at-rules/counter-style.json
index a1b9b89ad7376d..e5e7e162735cd0 100644
--- a/css/at-rules/counter-style.json
+++ b/css/at-rules/counter-style.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -177,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +219,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +257,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -288,7 +295,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -325,7 +333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -366,7 +375,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -403,7 +413,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/masonry-auto-flow.json b/css/at-rules/custom-media.json
similarity index 63%
rename from css/properties/masonry-auto-flow.json
rename to css/at-rules/custom-media.json
index 5e3f40625b4f44..694f370b01fe5d 100644
--- a/css/properties/masonry-auto-flow.json
+++ b/css/at-rules/custom-media.json
@@ -1,23 +1,20 @@
 {
   "css": {
-    "properties": {
-      "masonry-auto-flow": {
+    "at-rules": {
+      "custom-media": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/masonry-auto-flow",
-          "spec_url": "https://drafts.csswg.org/css-grid-3/#masonry-auto-flow",
-          "tags": [
-            "web-features:masonry"
-          ],
+          "description": "<code>@custom-media</code>",
+          "spec_url": "https://drafts.csswg.org/mediaqueries-5/#at-ruledef-custom-media",
           "support": {
             "chrome": {
               "version_added": false,
-              "impl_url": "https://crbug.com/40128480"
+              "impl_url": "https://crbug.com/40781325"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
               "version_added": false,
-              "impl_url": "https://bugzil.la/1757446"
+              "impl_url": "https://bugzil.la/1744292"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -27,8 +24,8 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "preview",
-              "impl_url": "https://webkit.org/b/248287"
+              "version_added": false,
+              "impl_url": "https://webkit.org/b/233820"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
diff --git a/css/at-rules/document.json b/css/at-rules/document.json
index b2befdf5b61353..01a892d9d7b1f5 100644
--- a/css/at-rules/document.json
+++ b/css/at-rules/document.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/font-face.json b/css/at-rules/font-face.json
index 001194338d2b3d..d39975d2ff1981 100644
--- a/css/at-rules/font-face.json
+++ b/css/at-rules/font-face.json
@@ -38,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -244,7 +250,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "38"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -288,7 +295,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -331,7 +339,8 @@
                 "version_added": "10"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -365,7 +374,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -399,7 +409,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -412,6 +423,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face/font-display",
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-display-desc",
+            "tags": [
+              "web-features:font-display"
+            ],
             "support": {
               "chrome": {
                 "version_added": "60"
@@ -435,7 +449,8 @@
               "samsunginternet_android": {
                 "version_added": "11.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -480,7 +495,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2.2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -493,6 +509,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face/font-feature-settings",
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-rend-desc",
+            "tags": [
+              "web-features:font-feature-settings"
+            ],
             "support": {
               "chrome": {
                 "version_added": false,
@@ -523,7 +542,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -563,7 +583,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -605,7 +626,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -618,6 +640,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face",
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-prop",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "4"
@@ -647,7 +672,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -660,6 +686,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face/font-variation-settings",
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-rend-desc",
+            "tags": [
+              "web-features:font-variation-settings"
+            ],
             "support": {
               "chrome": {
                 "version_added": false,
@@ -682,7 +711,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -724,7 +754,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -758,7 +789,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -794,7 +826,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -839,7 +872,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2.2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -873,7 +907,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -908,7 +943,8 @@
                   "version_added": "5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -943,7 +979,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -976,7 +1013,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -990,6 +1028,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face/unicode-range",
             "spec_url": "https://drafts.csswg.org/css-fonts/#unicode-range-desc",
+            "tags": [
+              "web-features:font-face"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1017,7 +1058,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/font-feature-values.json b/css/at-rules/font-feature-values.json
index 0b671ce4b0bcc3..2cef8bf0a9f776 100644
--- a/css/at-rules/font-feature-values.json
+++ b/css/at-rules/font-feature-values.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -250,7 +256,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,7 +294,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/font-palette-values.json b/css/at-rules/font-palette-values.json
index 6df8e24ba62121..6c18f6b7d33246 100644
--- a/css/at-rules/font-palette-values.json
+++ b/css/at-rules/font-palette-values.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -137,7 +140,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/import.json b/css/at-rules/import.json
index bb3e7964e93849..57fef43122e556 100644
--- a/css/at-rules/import.json
+++ b/css/at-rules/import.json
@@ -6,6 +6,9 @@
           "description": "<code>@import</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@import",
           "spec_url": "https://drafts.csswg.org/css-cascade-5/#at-import",
+          "tags": [
+            "web-features:import"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -35,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -46,6 +50,7 @@
         "layer": {
           "__compat": {
             "description": "<code>layer(&lt;layer-name&gt;)</code>",
+            "spec_url": "https://drafts.csswg.org/css-cascade-5/#ref-for-typedef-layer-name",
             "tags": [
               "web-features:cascade-layers"
             ],
@@ -70,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -83,6 +89,9 @@
           "__compat": {
             "description": "<code>supports()</code> as import condition",
             "spec_url": "https://drafts.csswg.org/css-cascade-5/#typedef-import-conditions",
+            "tags": [
+              "web-features:supports"
+            ],
             "support": {
               "chrome": {
                 "version_added": "122",
@@ -105,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/keyframes.json b/css/at-rules/keyframes.json
index 27bf6796e9ebd0..11852821003c44 100644
--- a/css/at-rules/keyframes.json
+++ b/css/at-rules/keyframes.json
@@ -93,7 +93,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -164,7 +166,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/at-rules/layer.json b/css/at-rules/layer.json
index 54a6eb4b555d3d..76a9987931c25d 100644
--- a/css/at-rules/layer.json
+++ b/css/at-rules/layer.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/media.json b/css/at-rules/media.json
index 31359353062000..37f885bfad6596 100644
--- a/css/at-rules/media.json
+++ b/css/at-rules/media.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,7 +117,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -158,7 +161,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,7 +197,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -238,7 +243,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,7 +279,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -308,7 +315,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -353,7 +361,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -398,7 +407,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -437,7 +447,8 @@
               "samsunginternet_android": {
                 "version_added": "16.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -482,7 +493,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -524,7 +536,8 @@
                 "version_added": "12.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -559,7 +572,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -595,7 +609,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -609,6 +624,9 @@
             "description": "<code>forced-colors</code> media feature",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media/forced-colors",
             "spec_url": "https://drafts.csswg.org/mediaqueries-5/#forced-colors",
+            "tags": [
+              "web-features:forced-colors"
+            ],
             "support": {
               "chrome": {
                 "version_added": "89"
@@ -632,7 +650,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -677,7 +696,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -722,7 +742,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -762,7 +783,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -806,7 +828,8 @@
                 "version_added": "10"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -847,7 +870,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -880,7 +904,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -923,7 +948,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -962,7 +988,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -996,7 +1023,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1039,7 +1067,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1074,7 +1103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1109,7 +1139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1152,7 +1183,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "41"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1196,7 +1228,8 @@
               "samsunginternet_android": {
                 "version_added": "14.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1239,7 +1272,8 @@
                 "samsunginternet_android": {
                   "version_added": "14.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1272,7 +1306,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1310,7 +1345,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1356,7 +1392,8 @@
               "webview_android": {
                 "version_added": false,
                 "impl_url": "https://crbug.com/1051189"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1393,7 +1430,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1437,7 +1475,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1481,7 +1520,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1541,7 +1581,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1576,7 +1617,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1611,7 +1653,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1653,7 +1696,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1698,7 +1742,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1732,7 +1777,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1770,7 +1816,8 @@
               "webview_android": {
                 "version_added": "2",
                 "version_removed": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1812,7 +1859,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1854,7 +1902,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1896,7 +1945,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1934,7 +1984,8 @@
               "webview_android": {
                 "version_added": "2",
                 "version_removed": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1971,7 +2022,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2009,7 +2061,8 @@
               "webview_android": {
                 "version_added": "2",
                 "version_removed": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/namespace.json b/css/at-rules/namespace.json
index a5ff838eeb9285..52c8bdfbc076fe 100644
--- a/css/at-rules/namespace.json
+++ b/css/at-rules/namespace.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/page.json b/css/at-rules/page.json
index 3232075618fa4b..bd83849e80f7ae 100644
--- a/css/at-rules/page.json
+++ b/css/at-rules/page.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,7 +111,8 @@
               },
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,11 +142,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": false
+                  "version_added": "preview"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -174,11 +178,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": false
+                  "version_added": "preview"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/at-rules/position-try.json b/css/at-rules/position-try.json
index d375bce9012203..ce9d83a27e1219 100644
--- a/css/at-rules/position-try.json
+++ b/css/at-rules/position-try.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/at-rules/property.json b/css/at-rules/property.json
index 12167dc387a8ff..2d5b7a827e55af 100644
--- a/css/at-rules/property.json
+++ b/css/at-rules/property.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/scope.json b/css/at-rules/scope.json
index c29583de1dd8ed..7d78d4130307fb 100644
--- a/css/at-rules/scope.json
+++ b/css/at-rules/scope.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/starting-style.json b/css/at-rules/starting-style.json
index 94edc0e4b9064d..49e4f2be334dbd 100644
--- a/css/at-rules/starting-style.json
+++ b/css/at-rules/starting-style.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/at-rules/supports.json b/css/at-rules/supports.json
index 79906cb378447d..16bb41bc422c60 100644
--- a/css/at-rules/supports.json
+++ b/css/at-rules/supports.json
@@ -9,6 +9,9 @@
             "https://drafts.csswg.org/css-conditional-4/#at-supports-ext",
             "https://drafts.csswg.org/css-conditional-3/#at-supports"
           ],
+          "tags": [
+            "web-features:supports"
+          ],
           "support": {
             "chrome": {
               "version_added": "28"
@@ -36,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -47,6 +51,9 @@
         "font-format": {
           "__compat": {
             "description": "<code>font-format()</code>",
+            "tags": [
+              "web-features:supports"
+            ],
             "support": {
               "chrome": {
                 "version_added": "108"
@@ -68,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -80,6 +88,9 @@
         "font-tech": {
           "__compat": {
             "description": "<code>font-tech()</code>",
+            "tags": [
+              "web-features:supports"
+            ],
             "support": {
               "chrome": {
                 "version_added": "108"
@@ -101,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,6 +125,9 @@
         "selector": {
           "__compat": {
             "description": "<code>selector()</code>",
+            "tags": [
+              "web-features:supports"
+            ],
             "support": {
               "chrome": {
                 "version_added": "83"
@@ -137,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/at-rules/view-transition.json b/css/at-rules/view-transition.json
index 7355a08c212d4c..2e7ab60f6e6788 100644
--- a/css/at-rules/view-transition.json
+++ b/css/at-rules/view-transition.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-moz-float-edge.json b/css/properties/-moz-float-edge.json
index 7b1390de538a3b..31f6db3dbf2648 100644
--- a/css/properties/-moz-float-edge.json
+++ b/css/properties/-moz-float-edge.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-moz-force-broken-image-icon.json b/css/properties/-moz-force-broken-image-icon.json
index 75e1770e44e93d..81b624e63950f7 100644
--- a/css/properties/-moz-force-broken-image-icon.json
+++ b/css/properties/-moz-force-broken-image-icon.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-moz-image-region.json b/css/properties/-moz-image-region.json
index 62393fdeffd26a..cdce1c5306c574 100644
--- a/css/properties/-moz-image-region.json
+++ b/css/properties/-moz-image-region.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-moz-orient.json b/css/properties/-moz-orient.json
index c9c5efc926cf8a..220e3268194899 100644
--- a/css/properties/-moz-orient.json
+++ b/css/properties/-moz-orient.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/-moz-user-focus.json b/css/properties/-moz-user-focus.json
index ed15111586a569..25d3784d4b7be2 100644
--- a/css/properties/-moz-user-focus.json
+++ b/css/properties/-moz-user-focus.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-moz-user-input.json b/css/properties/-moz-user-input.json
index a96e2349f3704a..daa8e05a9f4fa2 100644
--- a/css/properties/-moz-user-input.json
+++ b/css/properties/-moz-user-input.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -56,7 +57,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -88,7 +90,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/-webkit-app-region.json b/css/properties/-webkit-app-region.json
index 68ce25a016e721..839e13f6358af7 100644
--- a/css/properties/-webkit-app-region.json
+++ b/css/properties/-webkit-app-region.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-border-before.json b/css/properties/-webkit-border-before.json
index 9609f4530e8c1d..60b23c280194f9 100644
--- a/css/properties/-webkit-border-before.json
+++ b/css/properties/-webkit-border-before.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-border-horizontal-spacing.json b/css/properties/-webkit-border-horizontal-spacing.json
index b01d76f31999d1..c64c4708684647 100644
--- a/css/properties/-webkit-border-horizontal-spacing.json
+++ b/css/properties/-webkit-border-horizontal-spacing.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-border-vertical-spacing.json b/css/properties/-webkit-border-vertical-spacing.json
index 0cb530dead0c3e..ba4efce29c6718 100644
--- a/css/properties/-webkit-border-vertical-spacing.json
+++ b/css/properties/-webkit-border-vertical-spacing.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-box-reflect.json b/css/properties/-webkit-box-reflect.json
index 6ae45a80def974..3e5e36e632fda9 100644
--- a/css/properties/-webkit-box-reflect.json
+++ b/css/properties/-webkit-box-reflect.json
@@ -27,7 +27,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-column-axis.json b/css/properties/-webkit-column-axis.json
index 14046d09b66c3c..61d76574049c6e 100644
--- a/css/properties/-webkit-column-axis.json
+++ b/css/properties/-webkit-column-axis.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-column-break-after.json b/css/properties/-webkit-column-break-after.json
index bc33d3f42d3048..4ebf236cb5ba19 100644
--- a/css/properties/-webkit-column-break-after.json
+++ b/css/properties/-webkit-column-break-after.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-column-break-before.json b/css/properties/-webkit-column-break-before.json
index 74549570ee6b9a..64af0a4660e0e1 100644
--- a/css/properties/-webkit-column-break-before.json
+++ b/css/properties/-webkit-column-break-before.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-column-break-inside.json b/css/properties/-webkit-column-break-inside.json
index 9757891ccba603..dba4535438b6a0 100644
--- a/css/properties/-webkit-column-break-inside.json
+++ b/css/properties/-webkit-column-break-inside.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-column-progression.json b/css/properties/-webkit-column-progression.json
index 2f97563dfd1361..5f7082bcdfcda7 100644
--- a/css/properties/-webkit-column-progression.json
+++ b/css/properties/-webkit-column-progression.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-cursor-visibility.json b/css/properties/-webkit-cursor-visibility.json
index 7726b850adb902..45c61f3803dd8d 100644
--- a/css/properties/-webkit-cursor-visibility.json
+++ b/css/properties/-webkit-cursor-visibility.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-hyphenate-limit-after.json b/css/properties/-webkit-hyphenate-limit-after.json
index c41940a439c5fc..b1f574ab02433c 100644
--- a/css/properties/-webkit-hyphenate-limit-after.json
+++ b/css/properties/-webkit-hyphenate-limit-after.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-hyphenate-limit-before.json b/css/properties/-webkit-hyphenate-limit-before.json
index 4a78212aaf42af..78ee222bc34090 100644
--- a/css/properties/-webkit-hyphenate-limit-before.json
+++ b/css/properties/-webkit-hyphenate-limit-before.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-hyphenate-limit-lines.json b/css/properties/-webkit-hyphenate-limit-lines.json
index 62862ce8e560bd..d23f5e690393fe 100644
--- a/css/properties/-webkit-hyphenate-limit-lines.json
+++ b/css/properties/-webkit-hyphenate-limit-lines.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-line-align.json b/css/properties/-webkit-line-align.json
index 37be1aaa5398bb..254f0d02c9df58 100644
--- a/css/properties/-webkit-line-align.json
+++ b/css/properties/-webkit-line-align.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-line-box-contain.json b/css/properties/-webkit-line-box-contain.json
index 2edc99d3765db9..9fbd97249ea490 100644
--- a/css/properties/-webkit-line-box-contain.json
+++ b/css/properties/-webkit-line-box-contain.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-line-grid.json b/css/properties/-webkit-line-grid.json
index ca49f55365f39d..111725da544f33 100644
--- a/css/properties/-webkit-line-grid.json
+++ b/css/properties/-webkit-line-grid.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-line-snap.json b/css/properties/-webkit-line-snap.json
index efafb42a443bb8..2bb7dfe77616f9 100644
--- a/css/properties/-webkit-line-snap.json
+++ b/css/properties/-webkit-line-snap.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-locale.json b/css/properties/-webkit-locale.json
index 31f29e2d5f5e3f..45869c79d82934 100644
--- a/css/properties/-webkit-locale.json
+++ b/css/properties/-webkit-locale.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-logical-height.json b/css/properties/-webkit-logical-height.json
index 4ccd7ca57b3660..42b90cc7300474 100644
--- a/css/properties/-webkit-logical-height.json
+++ b/css/properties/-webkit-logical-height.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-logical-width.json b/css/properties/-webkit-logical-width.json
index 982200cb9f782f..4aa89f72080692 100644
--- a/css/properties/-webkit-logical-width.json
+++ b/css/properties/-webkit-logical-width.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-margin-after.json b/css/properties/-webkit-margin-after.json
index 1b344a86210744..0d5815075d2310 100644
--- a/css/properties/-webkit-margin-after.json
+++ b/css/properties/-webkit-margin-after.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-margin-before.json b/css/properties/-webkit-margin-before.json
index 2a8e140a7bbfe1..12e0ec78c6638f 100644
--- a/css/properties/-webkit-margin-before.json
+++ b/css/properties/-webkit-margin-before.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image-outset.json b/css/properties/-webkit-mask-box-image-outset.json
index feba426d30846c..6bf1879985c3fe 100644
--- a/css/properties/-webkit-mask-box-image-outset.json
+++ b/css/properties/-webkit-mask-box-image-outset.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image-repeat.json b/css/properties/-webkit-mask-box-image-repeat.json
index 7661e72de03bde..b5bfe3cca9e1d1 100644
--- a/css/properties/-webkit-mask-box-image-repeat.json
+++ b/css/properties/-webkit-mask-box-image-repeat.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image-slice.json b/css/properties/-webkit-mask-box-image-slice.json
index 012c565e0f5c65..06db8f5cf1c581 100644
--- a/css/properties/-webkit-mask-box-image-slice.json
+++ b/css/properties/-webkit-mask-box-image-slice.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image-source.json b/css/properties/-webkit-mask-box-image-source.json
index 25e9ac9cef36e9..1b080f264f3206 100644
--- a/css/properties/-webkit-mask-box-image-source.json
+++ b/css/properties/-webkit-mask-box-image-source.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image-width.json b/css/properties/-webkit-mask-box-image-width.json
index 747ee2f45542b3..acbe19679b9cc2 100644
--- a/css/properties/-webkit-mask-box-image-width.json
+++ b/css/properties/-webkit-mask-box-image-width.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-box-image.json b/css/properties/-webkit-mask-box-image.json
index e0fdb5198230c5..f463d2cbd2d3bd 100644
--- a/css/properties/-webkit-mask-box-image.json
+++ b/css/properties/-webkit-mask-box-image.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-composite.json b/css/properties/-webkit-mask-composite.json
index 06fccea9489ee5..c7a4e83058d0a8 100644
--- a/css/properties/-webkit-mask-composite.json
+++ b/css/properties/-webkit-mask-composite.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-position-x.json b/css/properties/-webkit-mask-position-x.json
index 585182b49cef2e..4aab5f64111f44 100644
--- a/css/properties/-webkit-mask-position-x.json
+++ b/css/properties/-webkit-mask-position-x.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-position-y.json b/css/properties/-webkit-mask-position-y.json
index efdac8445acaca..cd6d5be92a5e1c 100644
--- a/css/properties/-webkit-mask-position-y.json
+++ b/css/properties/-webkit-mask-position-y.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-repeat-x.json b/css/properties/-webkit-mask-repeat-x.json
index c3f2d347aa634a..cbe70515b5808b 100644
--- a/css/properties/-webkit-mask-repeat-x.json
+++ b/css/properties/-webkit-mask-repeat-x.json
@@ -30,7 +30,8 @@
               "version_removed": "15"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-repeat-y.json b/css/properties/-webkit-mask-repeat-y.json
index b612c1de8eb2d6..6ded41dee5f13b 100644
--- a/css/properties/-webkit-mask-repeat-y.json
+++ b/css/properties/-webkit-mask-repeat-y.json
@@ -30,7 +30,8 @@
               "version_removed": "15"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-mask-source-type.json b/css/properties/-webkit-mask-source-type.json
index bf81661c389d53..01a9263493d376 100644
--- a/css/properties/-webkit-mask-source-type.json
+++ b/css/properties/-webkit-mask-source-type.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-max-logical-height.json b/css/properties/-webkit-max-logical-height.json
index 4597245e5f8903..67a276329fe106 100644
--- a/css/properties/-webkit-max-logical-height.json
+++ b/css/properties/-webkit-max-logical-height.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-max-logical-width.json b/css/properties/-webkit-max-logical-width.json
index c1d3adfc9e9b5e..c2eaf3dd4c3668 100644
--- a/css/properties/-webkit-max-logical-width.json
+++ b/css/properties/-webkit-max-logical-width.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-min-logical-height.json b/css/properties/-webkit-min-logical-height.json
index f3361f1a37886d..3a1114b3629465 100644
--- a/css/properties/-webkit-min-logical-height.json
+++ b/css/properties/-webkit-min-logical-height.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-min-logical-width.json b/css/properties/-webkit-min-logical-width.json
index 6775b5ab209745..a426563b4468e7 100644
--- a/css/properties/-webkit-min-logical-width.json
+++ b/css/properties/-webkit-min-logical-width.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-nbsp-mode.json b/css/properties/-webkit-nbsp-mode.json
index 2380ed98f20423..7acc14f55d0836 100644
--- a/css/properties/-webkit-nbsp-mode.json
+++ b/css/properties/-webkit-nbsp-mode.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-perspective-origin-x.json b/css/properties/-webkit-perspective-origin-x.json
index 1b90e635c63fb1..87162fe49cdf4a 100644
--- a/css/properties/-webkit-perspective-origin-x.json
+++ b/css/properties/-webkit-perspective-origin-x.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-perspective-origin-y.json b/css/properties/-webkit-perspective-origin-y.json
index 978ce33ac1e0c8..a815b66de0216a 100644
--- a/css/properties/-webkit-perspective-origin-y.json
+++ b/css/properties/-webkit-perspective-origin-y.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-rtl-ordering.json b/css/properties/-webkit-rtl-ordering.json
index d43643e69db565..18f77ba1d58d04 100644
--- a/css/properties/-webkit-rtl-ordering.json
+++ b/css/properties/-webkit-rtl-ordering.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-tap-highlight-color.json b/css/properties/-webkit-tap-highlight-color.json
index 660992fdccef26..666e7560206d18 100644
--- a/css/properties/-webkit-tap-highlight-color.json
+++ b/css/properties/-webkit-tap-highlight-color.json
@@ -29,7 +29,8 @@
               "version_added": "4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-combine.json b/css/properties/-webkit-text-combine.json
index 943fa1bf6a562f..96d9d5f0793227 100644
--- a/css/properties/-webkit-text-combine.json
+++ b/css/properties/-webkit-text-combine.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-decoration-skip.json b/css/properties/-webkit-text-decoration-skip.json
index f688dbd8eaec6f..789c32b0fe1855 100644
--- a/css/properties/-webkit-text-decoration-skip.json
+++ b/css/properties/-webkit-text-decoration-skip.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-text-decorations-in-effect.json b/css/properties/-webkit-text-decorations-in-effect.json
index f7afa2034bd991..2d58e179ed793d 100644
--- a/css/properties/-webkit-text-decorations-in-effect.json
+++ b/css/properties/-webkit-text-decorations-in-effect.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-fill-color.json b/css/properties/-webkit-text-fill-color.json
index 97062c37a9d7e3..a793efeb784cf3 100644
--- a/css/properties/-webkit-text-fill-color.json
+++ b/css/properties/-webkit-text-fill-color.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-security.json b/css/properties/-webkit-text-security.json
index 5040c5c71a4d72..736de6196f4535 100644
--- a/css/properties/-webkit-text-security.json
+++ b/css/properties/-webkit-text-security.json
@@ -27,7 +27,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-stroke-color.json b/css/properties/-webkit-text-stroke-color.json
index 6248a397d76e21..244beb03ce6582 100644
--- a/css/properties/-webkit-text-stroke-color.json
+++ b/css/properties/-webkit-text-stroke-color.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-stroke-width.json b/css/properties/-webkit-text-stroke-width.json
index 608efe2169108a..56b172ab8afcb5 100644
--- a/css/properties/-webkit-text-stroke-width.json
+++ b/css/properties/-webkit-text-stroke-width.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "38"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-stroke.json b/css/properties/-webkit-text-stroke.json
index 0552069fdc24e1..7aee1becea733c 100644
--- a/css/properties/-webkit-text-stroke.json
+++ b/css/properties/-webkit-text-stroke.json
@@ -30,7 +30,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-text-zoom.json b/css/properties/-webkit-text-zoom.json
index f7df2418a0ad54..25886ee01e547d 100644
--- a/css/properties/-webkit-text-zoom.json
+++ b/css/properties/-webkit-text-zoom.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/-webkit-touch-callout.json b/css/properties/-webkit-touch-callout.json
index 1aaeaeac34e480..5251d908c8778a 100644
--- a/css/properties/-webkit-touch-callout.json
+++ b/css/properties/-webkit-touch-callout.json
@@ -27,7 +27,8 @@
               "version_added": "2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-transform-origin-x.json b/css/properties/-webkit-transform-origin-x.json
index 580d640efc2386..3ca1ac633f5aad 100644
--- a/css/properties/-webkit-transform-origin-x.json
+++ b/css/properties/-webkit-transform-origin-x.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-transform-origin-y.json b/css/properties/-webkit-transform-origin-y.json
index 1391d31c22f6eb..b9747112c7c47a 100644
--- a/css/properties/-webkit-transform-origin-y.json
+++ b/css/properties/-webkit-transform-origin-y.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-transform-origin-z.json b/css/properties/-webkit-transform-origin-z.json
index c97f219ef9596d..345381d3150f69 100644
--- a/css/properties/-webkit-transform-origin-z.json
+++ b/css/properties/-webkit-transform-origin-z.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-user-drag.json b/css/properties/-webkit-user-drag.json
index 0ddc5e626aed83..709cc4a09191f0 100644
--- a/css/properties/-webkit-user-drag.json
+++ b/css/properties/-webkit-user-drag.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-user-modify.json b/css/properties/-webkit-user-modify.json
index b5e174ee417186..62f5cc9ebc505e 100644
--- a/css/properties/-webkit-user-modify.json
+++ b/css/properties/-webkit-user-modify.json
@@ -24,7 +24,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/accent-color.json b/css/properties/accent-color.json
index 9cec1671b4c855..8ebfd83c8bcf88 100644
--- a/css/properties/accent-color.json
+++ b/css/properties/accent-color.json
@@ -25,11 +25,14 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "15.4"
+              "version_added": "15.4",
+              "partial_implementation": true,
+              "notes": "Safari does not adjust the color of glyphs (such as checkmarks) on form controls to maintain contrast. See <a href='https://webkit.org/b/244233'>bug 244233</a>."
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/align-content.json b/css/properties/align-content.json
index f4545fd1452fff..659d11046629cf 100644
--- a/css/properties/align-content.json
+++ b/css/properties/align-content.json
@@ -55,7 +55,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,7 +89,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -130,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +166,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -198,7 +202,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -242,7 +247,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -272,11 +278,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": "18"
+                  "version_added": "17.6"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -308,7 +315,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -347,7 +355,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -382,7 +391,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -433,7 +443,8 @@
               },
               "webview_android": {
                 "version_added": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -473,7 +484,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/align-items.json b/css/properties/align-items.json
index 9f60d58ca617e8..dff3e4e226d2e8 100644
--- a/css/properties/align-items.json
+++ b/css/properties/align-items.json
@@ -55,7 +55,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -143,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -187,7 +190,8 @@
                 },
                 "webview_android": {
                   "version_added": "57"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -222,7 +226,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -255,7 +260,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -285,11 +291,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": "18"
+                  "version_added": "17.6"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -322,7 +329,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -373,7 +381,8 @@
               },
               "webview_android": {
                 "version_added": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -408,7 +417,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/properties/align-self.json b/css/properties/align-self.json
index 014cf740b38406..a93dedf21e3646 100644
--- a/css/properties/align-self.json
+++ b/css/properties/align-self.json
@@ -59,7 +59,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -150,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -194,7 +197,8 @@
                 },
                 "webview_android": {
                   "version_added": "57"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -229,7 +233,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -262,7 +267,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -292,11 +298,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": "18"
+                  "version_added": "17.6"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -334,7 +341,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -369,7 +377,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -423,7 +432,8 @@
               },
               "webview_android": {
                 "version_added": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/alignment-baseline.json b/css/properties/alignment-baseline.json
index 2b06499e4fcb02..4da05a7a01fcba 100644
--- a/css/properties/alignment-baseline.json
+++ b/css/properties/alignment-baseline.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -125,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -157,7 +161,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -189,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/all.json b/css/properties/all.json
index 5b80a5717281a4..638ed17ea9f0f8 100644
--- a/css/properties/all.json
+++ b/css/properties/all.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/alt.json b/css/properties/alt.json
index c0db2c374527b7..8c164589fa3e18 100644
--- a/css/properties/alt.json
+++ b/css/properties/alt.json
@@ -32,7 +32,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/anchor-name.json b/css/properties/anchor-name.json
index c159f3d40e8125..9fe696a090a427 100644
--- a/css/properties/anchor-name.json
+++ b/css/properties/anchor-name.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/animation-composition.json b/css/properties/animation-composition.json
index f054887fefe985..c94a8361036fbb 100644
--- a/css/properties/animation-composition.json
+++ b/css/properties/animation-composition.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/animation-delay.json b/css/properties/animation-delay.json
index adf828fb8830e5..de6f99e37e1fe7 100644
--- a/css/properties/animation-delay.json
+++ b/css/properties/animation-delay.json
@@ -103,7 +103,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/animation-direction.json b/css/properties/animation-direction.json
index 1ba4b1b67c6c6d..b8db8deccff529 100644
--- a/css/properties/animation-direction.json
+++ b/css/properties/animation-direction.json
@@ -90,7 +90,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +125,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -198,7 +201,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation-duration.json b/css/properties/animation-duration.json
index 8457e13746db48..dfdbf27ed5c846 100644
--- a/css/properties/animation-duration.json
+++ b/css/properties/animation-duration.json
@@ -108,7 +108,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -143,7 +144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/animation-fill-mode.json b/css/properties/animation-fill-mode.json
index ebb617c5dfae5e..785a350d33f4f9 100644
--- a/css/properties/animation-fill-mode.json
+++ b/css/properties/animation-fill-mode.json
@@ -98,7 +98,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,7 +205,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation-iteration-count.json b/css/properties/animation-iteration-count.json
index a7ad7c2b6eb31b..be1825072e11d0 100644
--- a/css/properties/animation-iteration-count.json
+++ b/css/properties/animation-iteration-count.json
@@ -90,7 +90,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +125,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation-name.json b/css/properties/animation-name.json
index efcd645ed4b3e5..47dd6a335b6829 100644
--- a/css/properties/animation-name.json
+++ b/css/properties/animation-name.json
@@ -90,7 +90,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -124,7 +125,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation-play-state.json b/css/properties/animation-play-state.json
index 7a0c88e723ec41..7d7e4d5efd4f86 100644
--- a/css/properties/animation-play-state.json
+++ b/css/properties/animation-play-state.json
@@ -98,7 +98,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -132,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation-range-end.json b/css/properties/animation-range-end.json
index 568ac8ce863696..4d543d43fe2e41 100644
--- a/css/properties/animation-range-end.json
+++ b/css/properties/animation-range-end.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/animation-range-start.json b/css/properties/animation-range-start.json
index 0070293f4b375e..07c16508a3725c 100644
--- a/css/properties/animation-range-start.json
+++ b/css/properties/animation-range-start.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/animation-range.json b/css/properties/animation-range.json
index 18ea47540daaa2..52c37c4728656c 100644
--- a/css/properties/animation-range.json
+++ b/css/properties/animation-range.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/animation-timeline.json b/css/properties/animation-timeline.json
index 0e0194d2d655e8..f09a8fbcb8cea0 100644
--- a/css/properties/animation-timeline.json
+++ b/css/properties/animation-timeline.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -86,7 +87,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -132,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/animation-timing-function.json b/css/properties/animation-timing-function.json
index a9a951636d95b7..dc1c5bd3e83e2c 100644
--- a/css/properties/animation-timing-function.json
+++ b/css/properties/animation-timing-function.json
@@ -4,7 +4,10 @@
       "animation-timing-function": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/animation-timing-function",
-          "spec_url": "https://drafts.csswg.org/css-animations/#animation-timing-function",
+          "spec_url": [
+            "https://drafts.csswg.org/css-animations/#animation-timing-function",
+            "https://drafts.csswg.org/css-easing/#linear-easing-function-parsin"
+          ],
           "support": {
             "chrome": [
               {
@@ -90,7 +93,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -122,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/animation.json b/css/properties/animation.json
index 84dab642c3cb80..f596fbc4d4f1a4 100644
--- a/css/properties/animation.json
+++ b/css/properties/animation.json
@@ -99,7 +99,8 @@
                 "version_added": "2",
                 "notes": "The <a href='https://developer.mozilla.org/docs/Web/CSS/animation-fill-mode'><code>animation-fill-mode</code></a> property is not supported in Android browsers below 2.3."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -136,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/appearance.json b/css/properties/appearance.json
index 9ba6e83d96663f..7ecc9247fa3398 100644
--- a/css/properties/appearance.json
+++ b/css/properties/appearance.json
@@ -67,7 +67,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -178,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +220,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -254,7 +259,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -301,7 +307,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -386,7 +394,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -424,7 +433,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -462,7 +472,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -500,7 +511,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -538,7 +550,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -578,7 +591,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/aspect-ratio.json b/css/properties/aspect-ratio.json
index 845367c64916a2..dbbb5950f63e6a 100644
--- a/css/properties/aspect-ratio.json
+++ b/css/properties/aspect-ratio.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/backdrop-filter.json b/css/properties/backdrop-filter.json
index 0dc6136f259766..37f518814c3fdd 100644
--- a/css/properties/backdrop-filter.json
+++ b/css/properties/backdrop-filter.json
@@ -44,7 +44,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/backface-visibility.json b/css/properties/backface-visibility.json
index 5cfc989d3f1fe6..e681c44c87aab7 100644
--- a/css/properties/backface-visibility.json
+++ b/css/properties/backface-visibility.json
@@ -68,7 +68,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/background-attachment.json b/css/properties/background-attachment.json
index 31d7819aca1b6d..0b7496d3892390 100644
--- a/css/properties/background-attachment.json
+++ b/css/properties/background-attachment.json
@@ -34,7 +34,8 @@
               "version_added": "3.2"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +95,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -160,7 +162,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +204,8 @@
                 "version_added": "3.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -238,7 +242,8 @@
                 "version_added": "3.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-blend-mode.json b/css/properties/background-blend-mode.json
index 008d6b67e699c6..d42136ecac33af 100644
--- a/css/properties/background-blend-mode.json
+++ b/css/properties/background-blend-mode.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/background-clip.json b/css/properties/background-clip.json
index 03affee6e5b3bb..a4f885e01ca20a 100644
--- a/css/properties/background-clip.json
+++ b/css/properties/background-clip.json
@@ -93,7 +93,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,6 +102,43 @@
             "deprecated": false
           }
         },
+        "border-area": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-backgrounds-4/#valdef-background-clip-border-area",
+            "tags": [
+              "web-features:background-clip-border-area"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": false
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "preview"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "border-box": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-backgrounds/#valdef-background-clip-border-box",
@@ -130,7 +168,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +214,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +253,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -224,6 +265,7 @@
         },
         "text": {
           "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-backgrounds-4/#valdef-background-clip-text",
             "tags": [
               "web-features:background-clip-text"
             ],
@@ -281,7 +323,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-color.json b/css/properties/background-color.json
index 65bca7f5728483..7e93cc6dd3f9ce 100644
--- a/css/properties/background-color.json
+++ b/css/properties/background-color.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/background-image.json b/css/properties/background-image.json
index af213ac55e743f..738bc06d607407 100644
--- a/css/properties/background-image.json
+++ b/css/properties/background-image.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -109,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -240,7 +244,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -277,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -312,7 +318,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -353,7 +360,8 @@
                 "notes": "Support of SVG in CSS background is incomplete."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-origin.json b/css/properties/background-origin.json
index fa40845c59be63..6ce196d0731221 100644
--- a/css/properties/background-origin.json
+++ b/css/properties/background-origin.json
@@ -99,7 +99,8 @@
                 "version_added": "4",
                 "notes": "WebView accepts alternate synonyms to its values: <code>padding</code>, <code>border</code>, and <code>content</code>."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -133,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -177,7 +179,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -212,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-position-x.json b/css/properties/background-position-x.json
index 490bcc25e7e55f..21cce3106ec8f9 100644
--- a/css/properties/background-position-x.json
+++ b/css/properties/background-position-x.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-position-y.json b/css/properties/background-position-y.json
index b216fa54e2b8cd..6068fdadbec2f9 100644
--- a/css/properties/background-position-y.json
+++ b/css/properties/background-position-y.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-position.json b/css/properties/background-position.json
index c87410ead597d9..a86d1c93b58685 100644
--- a/css/properties/background-position.json
+++ b/css/properties/background-position.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -198,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +275,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-repeat.json b/css/properties/background-repeat.json
index 824d55bba056bc..d8b8f5b954226b 100644
--- a/css/properties/background-repeat.json
+++ b/css/properties/background-repeat.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -210,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -253,7 +259,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -337,7 +345,8 @@
                 "version_added": "4"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background-size.json b/css/properties/background-size.json
index 4f4872b0f19a01..225d03e5dc66b8 100644
--- a/css/properties/background-size.json
+++ b/css/properties/background-size.json
@@ -107,7 +107,8 @@
                 "version_added": "≤37",
                 "notes": "WebKit-based browsers originally implemented an older draft of CSS3 <code>background-size</code> in which an omitted second value is treated as duplicating the first value; this draft does not include the <code>contain</code> or <code>cover</code> keywords."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +182,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -219,7 +222,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/background.json b/css/properties/background.json
index f22eff9f2a7412..fb99eda07685a9 100644
--- a/css/properties/background.json
+++ b/css/properties/background.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,7 +115,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +199,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +239,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/baseline-shift.json b/css/properties/baseline-shift.json
index 363c8f687582d9..60ffad59e6fade 100644
--- a/css/properties/baseline-shift.json
+++ b/css/properties/baseline-shift.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/baseline-source.json b/css/properties/baseline-source.json
index 451a17e600e17e..a8c57e49c2c8cf 100644
--- a/css/properties/baseline-source.json
+++ b/css/properties/baseline-source.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/block-size.json b/css/properties/block-size.json
index dfcfbe3e31cb8b..49bed35953745a 100644
--- a/css/properties/block-size.json
+++ b/css/properties/block-size.json
@@ -31,7 +31,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -185,7 +189,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -225,7 +230,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-block-color.json b/css/properties/border-block-color.json
index 85363f7d2e266f..7199aee2f12238 100644
--- a/css/properties/border-block-color.json
+++ b/css/properties/border-block-color.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-end-color.json b/css/properties/border-block-end-color.json
index 8c8bdc80c49991..87d19b3b6e8322 100644
--- a/css/properties/border-block-end-color.json
+++ b/css/properties/border-block-end-color.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-end-style.json b/css/properties/border-block-end-style.json
index 06a020cfb044f4..a861a685009fb0 100644
--- a/css/properties/border-block-end-style.json
+++ b/css/properties/border-block-end-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-end-width.json b/css/properties/border-block-end-width.json
index d80a5c188f2408..607255b4171b0e 100644
--- a/css/properties/border-block-end-width.json
+++ b/css/properties/border-block-end-width.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-end.json b/css/properties/border-block-end.json
index 8aa1804094ec12..338731195337eb 100644
--- a/css/properties/border-block-end.json
+++ b/css/properties/border-block-end.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-start-color.json b/css/properties/border-block-start-color.json
index 2e4bed09435269..7f6eda4548183c 100644
--- a/css/properties/border-block-start-color.json
+++ b/css/properties/border-block-start-color.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-start-style.json b/css/properties/border-block-start-style.json
index af580bee1e4c7c..17acabea243094 100644
--- a/css/properties/border-block-start-style.json
+++ b/css/properties/border-block-start-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-start-width.json b/css/properties/border-block-start-width.json
index d2390a9df6f05b..38192aaea05d60 100644
--- a/css/properties/border-block-start-width.json
+++ b/css/properties/border-block-start-width.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-start.json b/css/properties/border-block-start.json
index c971cfc501b3e0..f1900f4d5a62ef 100644
--- a/css/properties/border-block-start.json
+++ b/css/properties/border-block-start.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-style.json b/css/properties/border-block-style.json
index 4403b0b25b0f5c..0f45af407548b5 100644
--- a/css/properties/border-block-style.json
+++ b/css/properties/border-block-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block-width.json b/css/properties/border-block-width.json
index 147027dcd23693..86be826dc90c88 100644
--- a/css/properties/border-block-width.json
+++ b/css/properties/border-block-width.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-block.json b/css/properties/border-block.json
index 372f20cbe842f7..f60c8824c02b7a 100644
--- a/css/properties/border-block.json
+++ b/css/properties/border-block.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-bottom-color.json b/css/properties/border-bottom-color.json
index d012ad4d51da52..cdda6e1301297c 100644
--- a/css/properties/border-bottom-color.json
+++ b/css/properties/border-bottom-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-bottom-left-radius.json b/css/properties/border-bottom-left-radius.json
index aa00fa7790a3de..ea4fdfc27ba9b7 100644
--- a/css/properties/border-bottom-left-radius.json
+++ b/css/properties/border-bottom-left-radius.json
@@ -82,7 +82,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +121,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-bottom-right-radius.json b/css/properties/border-bottom-right-radius.json
index 0f45975044fde8..2798fe5c566dba 100644
--- a/css/properties/border-bottom-right-radius.json
+++ b/css/properties/border-bottom-right-radius.json
@@ -82,7 +82,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +121,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-bottom-style.json b/css/properties/border-bottom-style.json
index 9b32f25809f8ff..04c0452443a13f 100644
--- a/css/properties/border-bottom-style.json
+++ b/css/properties/border-bottom-style.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-bottom-width.json b/css/properties/border-bottom-width.json
index b53785e0440de4..4cf19873faa295 100644
--- a/css/properties/border-bottom-width.json
+++ b/css/properties/border-bottom-width.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-bottom.json b/css/properties/border-bottom.json
index 55d041a7a24429..91a9ee724e0989 100644
--- a/css/properties/border-bottom.json
+++ b/css/properties/border-bottom.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-collapse.json b/css/properties/border-collapse.json
index 7d521e642565e4..eca36c3c18e2df 100644
--- a/css/properties/border-collapse.json
+++ b/css/properties/border-collapse.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-color.json b/css/properties/border-color.json
index ccddfe0b5d16df..7b4c136d10e505 100644
--- a/css/properties/border-color.json
+++ b/css/properties/border-color.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-end-end-radius.json b/css/properties/border-end-end-radius.json
index 460902c05c3c5e..27c8ac34dc2873 100644
--- a/css/properties/border-end-end-radius.json
+++ b/css/properties/border-end-end-radius.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-end-start-radius.json b/css/properties/border-end-start-radius.json
index 69b7073546ba3e..98a1b70fe5bce8 100644
--- a/css/properties/border-end-start-radius.json
+++ b/css/properties/border-end-start-radius.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-image-outset.json b/css/properties/border-image-outset.json
index 881f556ed2f154..5c482ba42acdcf 100644
--- a/css/properties/border-image-outset.json
+++ b/css/properties/border-image-outset.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-image-repeat.json b/css/properties/border-image-repeat.json
index 14e62d81f36565..cd9e097bfdb94f 100644
--- a/css/properties/border-image-repeat.json
+++ b/css/properties/border-image-repeat.json
@@ -33,7 +33,8 @@
               "version_added": "9.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -182,7 +186,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-image-slice.json b/css/properties/border-image-slice.json
index 773e100adbc3d9..e2c58bd5501874 100644
--- a/css/properties/border-image-slice.json
+++ b/css/properties/border-image-slice.json
@@ -45,7 +45,8 @@
                 "prefix": "-webkit-",
                 "version_added": "4"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-image-source.json b/css/properties/border-image-source.json
index 20feedd475efa9..0f19a7b0159071 100644
--- a/css/properties/border-image-source.json
+++ b/css/properties/border-image-source.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-image-width.json b/css/properties/border-image-width.json
index dbd0f314002614..f23891a67473ce 100644
--- a/css/properties/border-image-width.json
+++ b/css/properties/border-image-width.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-image.json b/css/properties/border-image.json
index 92ebdca2d9ddcf..40bbd3feb63a59 100644
--- a/css/properties/border-image.json
+++ b/css/properties/border-image.json
@@ -101,7 +101,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +216,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-inline-color.json b/css/properties/border-inline-color.json
index d85d6bcc2d2f91..6ebc9acc624d41 100644
--- a/css/properties/border-inline-color.json
+++ b/css/properties/border-inline-color.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-end-color.json b/css/properties/border-inline-end-color.json
index a64ee07fde450b..689dab83437a1e 100644
--- a/css/properties/border-inline-end-color.json
+++ b/css/properties/border-inline-end-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-end-style.json b/css/properties/border-inline-end-style.json
index f1a495348ce3cb..c41ee763983f35 100644
--- a/css/properties/border-inline-end-style.json
+++ b/css/properties/border-inline-end-style.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-end-width.json b/css/properties/border-inline-end-width.json
index 80699c8212c023..4cde9fa772d731 100644
--- a/css/properties/border-inline-end-width.json
+++ b/css/properties/border-inline-end-width.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-end.json b/css/properties/border-inline-end.json
index 8542f8ec2b8c75..75efcd0de359b8 100644
--- a/css/properties/border-inline-end.json
+++ b/css/properties/border-inline-end.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-start-color.json b/css/properties/border-inline-start-color.json
index 5d127ce2aa07e8..099c303133985b 100644
--- a/css/properties/border-inline-start-color.json
+++ b/css/properties/border-inline-start-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-start-style.json b/css/properties/border-inline-start-style.json
index 68e8df5cbbad4e..b11b7b1fec988d 100644
--- a/css/properties/border-inline-start-style.json
+++ b/css/properties/border-inline-start-style.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-start-width.json b/css/properties/border-inline-start-width.json
index 743d2c459861ac..3b89ef80d9aff0 100644
--- a/css/properties/border-inline-start-width.json
+++ b/css/properties/border-inline-start-width.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-start.json b/css/properties/border-inline-start.json
index b29343c2f21463..7bea74c5a66104 100644
--- a/css/properties/border-inline-start.json
+++ b/css/properties/border-inline-start.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-style.json b/css/properties/border-inline-style.json
index 652df7d38f7b70..d36aad20ee7a3a 100644
--- a/css/properties/border-inline-style.json
+++ b/css/properties/border-inline-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline-width.json b/css/properties/border-inline-width.json
index b51395d9466988..0db1e7084b13f8 100644
--- a/css/properties/border-inline-width.json
+++ b/css/properties/border-inline-width.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-inline.json b/css/properties/border-inline.json
index 981f4a66a23708..5f8eca99290bf2 100644
--- a/css/properties/border-inline.json
+++ b/css/properties/border-inline.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-left-color.json b/css/properties/border-left-color.json
index ccb5af2b8786a9..2f0b107a9cdd11 100644
--- a/css/properties/border-left-color.json
+++ b/css/properties/border-left-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-left-style.json b/css/properties/border-left-style.json
index 38dbfd1a5d935c..12448e033ab959 100644
--- a/css/properties/border-left-style.json
+++ b/css/properties/border-left-style.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-left-width.json b/css/properties/border-left-width.json
index 2f108c868f46aa..db63c86c3e3e03 100644
--- a/css/properties/border-left-width.json
+++ b/css/properties/border-left-width.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-left.json b/css/properties/border-left.json
index eee5a99dacde54..b0f14ab46b188d 100644
--- a/css/properties/border-left.json
+++ b/css/properties/border-left.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-radius.json b/css/properties/border-radius.json
index f5e11df28835aa..bc7efcde427f1b 100644
--- a/css/properties/border-radius.json
+++ b/css/properties/border-radius.json
@@ -93,7 +93,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +138,8 @@
                 "version_added": "4.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -219,7 +222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-right-color.json b/css/properties/border-right-color.json
index 2bc3dd85200c88..7464664f56fcda 100644
--- a/css/properties/border-right-color.json
+++ b/css/properties/border-right-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-right-style.json b/css/properties/border-right-style.json
index ab281408cc3a93..0153f163d2580e 100644
--- a/css/properties/border-right-style.json
+++ b/css/properties/border-right-style.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-right-width.json b/css/properties/border-right-width.json
index c5b76ee4cf50ba..9190c145f63065 100644
--- a/css/properties/border-right-width.json
+++ b/css/properties/border-right-width.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-right.json b/css/properties/border-right.json
index ca9f612dabf639..177447bb718275 100644
--- a/css/properties/border-right.json
+++ b/css/properties/border-right.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-spacing.json b/css/properties/border-spacing.json
index 9a8707565b7495..0484d2347c7f9b 100644
--- a/css/properties/border-spacing.json
+++ b/css/properties/border-spacing.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-start-end-radius.json b/css/properties/border-start-end-radius.json
index f35e46a91473ef..6c1fa7578b08b6 100644
--- a/css/properties/border-start-end-radius.json
+++ b/css/properties/border-start-end-radius.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-start-start-radius.json b/css/properties/border-start-start-radius.json
index 6904d9b82bd79f..d2c2cf9aa71499 100644
--- a/css/properties/border-start-start-radius.json
+++ b/css/properties/border-start-start-radius.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-style.json b/css/properties/border-style.json
index 3d7348585ca288..1ab53528f276a5 100644
--- a/css/properties/border-style.json
+++ b/css/properties/border-style.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -240,7 +246,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -275,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -310,7 +318,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -345,7 +354,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -380,7 +390,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-top-color.json b/css/properties/border-top-color.json
index 1a8bdf931a34f7..3da0ca291c37e0 100644
--- a/css/properties/border-top-color.json
+++ b/css/properties/border-top-color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-top-left-radius.json b/css/properties/border-top-left-radius.json
index 5e48fe751031c5..95ff5c43110c30 100644
--- a/css/properties/border-top-left-radius.json
+++ b/css/properties/border-top-left-radius.json
@@ -82,7 +82,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +121,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-top-right-radius.json b/css/properties/border-top-right-radius.json
index fa16e7d0e1c195..0e95f2e9acb0e4 100644
--- a/css/properties/border-top-right-radius.json
+++ b/css/properties/border-top-right-radius.json
@@ -82,7 +82,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +121,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/border-top-style.json b/css/properties/border-top-style.json
index 4b5aaa7bd074fe..9b40e93e2d53aa 100644
--- a/css/properties/border-top-style.json
+++ b/css/properties/border-top-style.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-top-width.json b/css/properties/border-top-width.json
index ec404caaef6f1d..0938401be6df48 100644
--- a/css/properties/border-top-width.json
+++ b/css/properties/border-top-width.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-top.json b/css/properties/border-top.json
index 5ad5e6e5d3c33a..f7451477612c9c 100644
--- a/css/properties/border-top.json
+++ b/css/properties/border-top.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border-width.json b/css/properties/border-width.json
index bc0573a2a61a69..b7cbede703d114 100644
--- a/css/properties/border-width.json
+++ b/css/properties/border-width.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/border.json b/css/properties/border.json
index 4e2588b6e3ea75..266bc52d1076e6 100644
--- a/css/properties/border.json
+++ b/css/properties/border.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/bottom.json b/css/properties/bottom.json
index bdb0e6c06c78e4..c25cac5209d548 100644
--- a/css/properties/bottom.json
+++ b/css/properties/bottom.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/box-align.json b/css/properties/box-align.json
index 390007d47b967f..4823612638804b 100644
--- a/css/properties/box-align.json
+++ b/css/properties/box-align.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-decoration-break.json b/css/properties/box-decoration-break.json
index 2c9c2474e7b68a..723964a8cdf107 100644
--- a/css/properties/box-decoration-break.json
+++ b/css/properties/box-decoration-break.json
@@ -48,7 +48,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -80,7 +81,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -113,7 +117,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/box-direction.json b/css/properties/box-direction.json
index c9e2ccd7eaf6ca..6277f43ae10485 100644
--- a/css/properties/box-direction.json
+++ b/css/properties/box-direction.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-flex-group.json b/css/properties/box-flex-group.json
index ab801f01387447..1ba441abc83d24 100644
--- a/css/properties/box-flex-group.json
+++ b/css/properties/box-flex-group.json
@@ -38,7 +38,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-flex.json b/css/properties/box-flex.json
index 789e7be516a48c..c1e0e2eed681bb 100644
--- a/css/properties/box-flex.json
+++ b/css/properties/box-flex.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-lines.json b/css/properties/box-lines.json
index 8de86d5ce22fef..6e701ada023aea 100644
--- a/css/properties/box-lines.json
+++ b/css/properties/box-lines.json
@@ -38,7 +38,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-ordinal-group.json b/css/properties/box-ordinal-group.json
index 002bcb56805a55..3e8e3705f02e0a 100644
--- a/css/properties/box-ordinal-group.json
+++ b/css/properties/box-ordinal-group.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-orient.json b/css/properties/box-orient.json
index 1714e4a6cf0a3a..210b1d23a920a8 100644
--- a/css/properties/box-orient.json
+++ b/css/properties/box-orient.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-pack.json b/css/properties/box-pack.json
index 3e58088c57f251..8af521fe38d858 100644
--- a/css/properties/box-pack.json
+++ b/css/properties/box-pack.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/box-shadow.json b/css/properties/box-shadow.json
index 543b8f61463cec..675ad2aae95082 100644
--- a/css/properties/box-shadow.json
+++ b/css/properties/box-shadow.json
@@ -70,7 +70,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +130,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -194,7 +196,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +254,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/box-sizing.json b/css/properties/box-sizing.json
index 1e3e0534ec8d56..0c81e7fd1afeb3 100644
--- a/css/properties/box-sizing.json
+++ b/css/properties/box-sizing.json
@@ -78,7 +78,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -147,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/break-after.json b/css/properties/break-after.json
index 4e9876be595043..112a627ebb9d7e 100644
--- a/css/properties/break-after.json
+++ b/css/properties/break-after.json
@@ -51,7 +51,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -116,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +153,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -184,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -252,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -286,7 +293,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -347,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -380,7 +389,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -431,7 +441,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -490,7 +501,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -543,7 +555,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -578,7 +591,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -637,7 +651,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -676,7 +691,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "50"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -713,7 +729,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -753,7 +770,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -787,7 +805,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -822,7 +841,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -856,7 +876,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -890,7 +911,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/break-before.json b/css/properties/break-before.json
index a83d831c8d51bf..96e6ec982460b2 100644
--- a/css/properties/break-before.json
+++ b/css/properties/break-before.json
@@ -51,7 +51,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -116,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +153,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -184,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -252,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -286,7 +293,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -347,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -380,7 +389,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -431,7 +441,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -490,7 +501,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -527,7 +539,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -562,7 +575,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -621,7 +635,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -660,7 +675,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "50"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -701,7 +717,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -735,7 +752,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -770,7 +788,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -804,7 +823,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -838,7 +858,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/break-inside.json b/css/properties/break-inside.json
index 2a9e30b35178a8..707fae08ca1cb8 100644
--- a/css/properties/break-inside.json
+++ b/css/properties/break-inside.json
@@ -51,7 +51,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,7 +120,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -186,7 +190,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,7 +250,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -297,7 +303,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -357,7 +364,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -406,7 +414,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/properties/caption-side.json b/css/properties/caption-side.json
index 38d5b453da6b6c..59dc5d177b032e 100644
--- a/css/properties/caption-side.json
+++ b/css/properties/caption-side.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -41,6 +42,39 @@
             "deprecated": false
           }
         },
+        "bottom": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "≤80"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "≤72"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "≤13.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "bottom-outside": {
           "__compat": {
             "support": {
@@ -65,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,11 +129,13 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "preview"
+                "version_added": "≤13.1",
+                "version_removed": "17"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,11 +164,13 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "preview"
+                "version_added": "≤13.1",
+                "version_removed": "17"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,6 +179,39 @@
             }
           }
         },
+        "top": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "≤80"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "≤72"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "≤13.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "top-outside": {
           "__compat": {
             "support": {
@@ -164,7 +236,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +270,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/caret-color.json b/css/properties/caret-color.json
index e33d3b1885afba..090e1eb04b1ec5 100644
--- a/css/properties/caret-color.json
+++ b/css/properties/caret-color.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/caret-color",
           "spec_url": "https://drafts.csswg.org/css-ui/#caret-color",
+          "tags": [
+            "web-features:caret-color"
+          ],
           "support": {
             "chrome": {
               "version_added": "57"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/clear.json b/css/properties/clear.json
index 2d4412ab0910d6..f6ac09b1ba70e3 100644
--- a/css/properties/clear.json
+++ b/css/properties/clear.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/clip-path.json b/css/properties/clip-path.json
index 19093fb2686a57..bae62d0cc0f31d 100644
--- a/css/properties/clip-path.json
+++ b/css/properties/clip-path.json
@@ -52,7 +52,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,7 +120,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -151,7 +154,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -184,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -231,7 +236,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -265,7 +271,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -300,7 +307,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -333,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/clip-rule.json b/css/properties/clip-rule.json
index 59fec18ef9da02..63d1d0e6f7055f 100644
--- a/css/properties/clip-rule.json
+++ b/css/properties/clip-rule.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/clip.json b/css/properties/clip.json
index 7b2420624864d5..bd2e9c9140bd0a 100644
--- a/css/properties/clip.json
+++ b/css/properties/clip.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/color-adjust.json b/css/properties/color-adjust.json
index 7601123eadd04d..f90eb2ed69b54f 100644
--- a/css/properties/color-adjust.json
+++ b/css/properties/color-adjust.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/color-interpolation-filters.json b/css/properties/color-interpolation-filters.json
index e41450ab3e2010..52b8df76201326 100644
--- a/css/properties/color-interpolation-filters.json
+++ b/css/properties/color-interpolation-filters.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/color-interpolation.json b/css/properties/color-interpolation.json
index 61c3e24d9a118d..27635ec6e882a0 100644
--- a/css/properties/color-interpolation.json
+++ b/css/properties/color-interpolation.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/color-scheme.json b/css/properties/color-scheme.json
index f1e4f1f6d94762..90a75715984e4a 100644
--- a/css/properties/color-scheme.json
+++ b/css/properties/color-scheme.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +38,105 @@
             "deprecated": false
           }
         },
+        "dark": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "81"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "96"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "13"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "light": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "81"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "96"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "13"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "normal": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "81"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "96"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "13"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "only_dark": {
           "__compat": {
             "description": "<code>only dark</code> keyword",
@@ -70,7 +170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -112,7 +213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/color.json b/css/properties/color.json
index 20106630e3beb3..95a1fee887bd2d 100644
--- a/css/properties/color.json
+++ b/css/properties/color.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/column-count.json b/css/properties/column-count.json
index 67a9cd118a1a65..6de1e50b26619c 100644
--- a/css/properties/column-count.json
+++ b/css/properties/column-count.json
@@ -54,7 +54,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,7 +87,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/column-fill.json b/css/properties/column-fill.json
index bdf4c9985db829..81d8e4de649af6 100644
--- a/css/properties/column-fill.json
+++ b/css/properties/column-fill.json
@@ -49,7 +49,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,7 +84,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,7 +120,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/column-gap.json b/css/properties/column-gap.json
index 535c51167e5209..3359cc012f78dc 100644
--- a/css/properties/column-gap.json
+++ b/css/properties/column-gap.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -151,7 +153,8 @@
                   "version_added": "6.0"
                 }
               ],
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -257,7 +260,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -291,7 +295,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -326,7 +331,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/properties/column-rule-color.json b/css/properties/column-rule-color.json
index 8fccf0bb93dfe2..a31d18697baddd 100644
--- a/css/properties/column-rule-color.json
+++ b/css/properties/column-rule-color.json
@@ -85,7 +85,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/column-rule-style.json b/css/properties/column-rule-style.json
index 66a737d2a0014a..b551ae0f363bc2 100644
--- a/css/properties/column-rule-style.json
+++ b/css/properties/column-rule-style.json
@@ -85,7 +85,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/column-rule-width.json b/css/properties/column-rule-width.json
index b043453c5f2ab0..3f53a5a1e0b2e2 100644
--- a/css/properties/column-rule-width.json
+++ b/css/properties/column-rule-width.json
@@ -85,7 +85,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/column-rule.json b/css/properties/column-rule.json
index 0397e5f6d50da1..5466524754ea37 100644
--- a/css/properties/column-rule.json
+++ b/css/properties/column-rule.json
@@ -86,7 +86,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/column-span.json b/css/properties/column-span.json
index 715910d9f3647b..a0266b001fa0c7 100644
--- a/css/properties/column-span.json
+++ b/css/properties/column-span.json
@@ -46,7 +46,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/column-width.json b/css/properties/column-width.json
index 9fb7eeb2b369c4..d5b88655e9e454 100644
--- a/css/properties/column-width.json
+++ b/css/properties/column-width.json
@@ -90,7 +90,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/columns.json b/css/properties/columns.json
index 198bb6c20e43d6..96036974faf85d 100644
--- a/css/properties/columns.json
+++ b/css/properties/columns.json
@@ -97,7 +97,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/contain-intrinsic-block-size.json b/css/properties/contain-intrinsic-block-size.json
index 905ebc3a1510ca..59aff6f905f63a 100644
--- a/css/properties/contain-intrinsic-block-size.json
+++ b/css/properties/contain-intrinsic-block-size.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/contain-intrinsic-height.json b/css/properties/contain-intrinsic-height.json
index 153f6a862e27c7..962f285defc73c 100644
--- a/css/properties/contain-intrinsic-height.json
+++ b/css/properties/contain-intrinsic-height.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/contain-intrinsic-inline-size.json b/css/properties/contain-intrinsic-inline-size.json
index 0c16c806f2c898..edacd4d9ae1a22 100644
--- a/css/properties/contain-intrinsic-inline-size.json
+++ b/css/properties/contain-intrinsic-inline-size.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/contain-intrinsic-size.json b/css/properties/contain-intrinsic-size.json
index c527f9aa9a5a80..c7527c57f0feab 100644
--- a/css/properties/contain-intrinsic-size.json
+++ b/css/properties/contain-intrinsic-size.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/contain-intrinsic-width.json b/css/properties/contain-intrinsic-width.json
index 86ed5a06c78a69..8b5a153874f1b1 100644
--- a/css/properties/contain-intrinsic-width.json
+++ b/css/properties/contain-intrinsic-width.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/contain.json b/css/properties/contain.json
index 8e070f60126d48..998ea7d8e6b6f4 100644
--- a/css/properties/contain.json
+++ b/css/properties/contain.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/contain",
           "spec_url": "https://drafts.csswg.org/css-contain/#contain-property",
+          "tags": [
+            "web-features:contain-size"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,7 +75,10 @@
         "inline-size": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/contain#inline-size",
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#valdef-contain-inline-size",
+            "spec_url": "https://drafts.csswg.org/css-contain-2/#valdef-contain-inline-size",
+            "tags": [
+              "web-features:contain-inline-size"
+            ],
             "support": {
               "chrome": {
                 "version_added": "105"
@@ -92,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,6 +113,9 @@
         "layout": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-contain/#valdef-contain-layout",
+            "tags": [
+              "web-features:contain-layout"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -125,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -158,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,6 +184,9 @@
         "paint": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-contain/#valdef-contain-paint",
+            "tags": [
+              "web-features:contain-paint"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -191,7 +208,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -203,6 +221,9 @@
         "size": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-contain/#valdef-contain-size",
+            "tags": [
+              "web-features:contain-size"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -224,7 +245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -257,7 +279,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,6 +293,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/contain#style",
             "spec_url": "https://drafts.csswg.org/css-contain/#valdef-contain-style",
+            "tags": [
+              "web-features:contain-style"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52",
@@ -293,7 +319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/container-name.json b/css/properties/container-name.json
index 7be192ef05c593..0f4fdb5ec7f736 100644
--- a/css/properties/container-name.json
+++ b/css/properties/container-name.json
@@ -4,7 +4,7 @@
       "container-name": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/container-name",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#container-name",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#container-name",
           "tags": [
             "web-features:container-queries"
           ],
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,7 +40,10 @@
         },
         "none": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#valdef-container-name-none",
+            "spec_url": "https://drafts.csswg.org/css-conditional-5/#valdef-container-name-none",
+            "tags": [
+              "web-features:container-queries"
+            ],
             "support": {
               "chrome": {
                 "version_added": "105"
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/container-type.json b/css/properties/container-type.json
index 93751a12070f85..c34f8ba1e5702e 100644
--- a/css/properties/container-type.json
+++ b/css/properties/container-type.json
@@ -4,7 +4,7 @@
       "container-type": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/container-type",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#container-type",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#container-type",
           "tags": [
             "web-features:container-queries"
           ],
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,7 +40,10 @@
         },
         "inline-size": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#valdef-container-type-inline-size",
+            "spec_url": "https://drafts.csswg.org/css-conditional-5/#valdef-container-type-inline-size",
+            "tags": [
+              "web-features:container-queries"
+            ],
             "support": {
               "chrome": {
                 "version_added": "105"
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -72,7 +77,10 @@
         },
         "normal": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#valdef-container-type-normal",
+            "spec_url": "https://drafts.csswg.org/css-conditional-5/#valdef-container-type-normal",
+            "tags": [
+              "web-features:container-queries"
+            ],
             "support": {
               "chrome": {
                 "version_added": "105"
@@ -94,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +114,10 @@
         },
         "size": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-contain-3/#valdef-container-type-size",
+            "spec_url": "https://drafts.csswg.org/css-conditional-5/#valdef-container-type-size",
+            "tags": [
+              "web-features:container-queries"
+            ],
             "support": {
               "chrome": {
                 "version_added": "105"
@@ -127,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/container.json b/css/properties/container.json
index c457a6235c9c38..f9ce061ac5d6f5 100644
--- a/css/properties/container.json
+++ b/css/properties/container.json
@@ -4,7 +4,7 @@
       "container": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/container",
-          "spec_url": "https://drafts.csswg.org/css-contain-3/#container-shorthand",
+          "spec_url": "https://drafts.csswg.org/css-conditional-5/#container-shorthand",
           "tags": [
             "web-features:container-queries"
           ],
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/content-visibility.json b/css/properties/content-visibility.json
index bf3f0f4305577c..6a91bda9e3494c 100644
--- a/css/properties/content-visibility.json
+++ b/css/properties/content-visibility.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -168,7 +172,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/content.json b/css/properties/content.json
index 2e98e5a20540c5..f712451255468f 100644
--- a/css/properties/content.json
+++ b/css/properties/content.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -43,6 +44,9 @@
         "alt_text": {
           "__compat": {
             "description": "Alternative text after <code>/</code>",
+            "tags": [
+              "web-features:alt-text-generated-content"
+            ],
             "support": {
               "chrome": {
                 "version_added": "77"
@@ -64,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +242,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,7 +278,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -309,7 +318,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -344,7 +354,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -356,7 +367,7 @@
         "url": {
           "__compat": {
             "description": "<code>url()</code>",
-            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/url",
+            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/url_value",
             "spec_url": "https://drafts.csswg.org/css-values/#urls",
             "support": {
               "chrome": {
@@ -385,7 +396,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/counter-increment.json b/css/properties/counter-increment.json
index 71558c928e1fea..d0e9fcfa9985b4 100644
--- a/css/properties/counter-increment.json
+++ b/css/properties/counter-increment.json
@@ -36,7 +36,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/counter-reset.json b/css/properties/counter-reset.json
index 82690590fef1e2..6a94ebac0b8475 100644
--- a/css/properties/counter-reset.json
+++ b/css/properties/counter-reset.json
@@ -36,7 +36,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,7 +144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -175,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/counter-set.json b/css/properties/counter-set.json
index 82df2e81aaa5fd..0dbae759ad52fb 100644
--- a/css/properties/counter-set.json
+++ b/css/properties/counter-set.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/cursor.json b/css/properties/cursor.json
index 1409e9c236e292..f00e90c120e8c5 100644
--- a/css/properties/cursor.json
+++ b/css/properties/cursor.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,7 +117,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,7 +157,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +199,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +241,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -279,7 +285,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -320,7 +327,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -359,7 +367,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -398,7 +407,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -437,7 +447,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -478,7 +489,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -565,7 +577,8 @@
                   "version_added": "1.0"
                 }
               ],
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -600,7 +613,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -639,46 +653,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
-            },
-            "status": {
-              "experimental": false,
-              "standard_track": true,
-              "deprecated": false
-            }
-          }
-        },
-        "inherit": {
-          "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-ui/#valdef-cursor-inherit",
-            "support": {
-              "chrome": {
-                "version_added": "1"
-              },
-              "chrome_android": "mirror",
-              "edge": {
-                "version_added": "12"
-              },
-              "firefox": {
-                "version_added": "1"
-              },
-              "firefox_android": {
-                "version_added": "95"
-              },
-              "ie": {
-                "version_added": "8"
-              },
-              "oculus": "mirror",
-              "opera": {
-                "version_added": "9"
-              },
-              "opera_android": "mirror",
-              "safari": {
-                "version_added": "1.2"
-              },
-              "safari_ios": "mirror",
-              "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -717,7 +693,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -756,7 +733,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -795,7 +773,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -836,7 +815,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -877,7 +857,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -914,7 +895,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -955,7 +937,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -996,7 +979,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1035,7 +1019,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1076,7 +1061,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1115,7 +1101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1154,7 +1141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1195,7 +1183,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1234,7 +1223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1273,7 +1263,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1312,7 +1303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1351,7 +1343,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1391,7 +1384,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1429,7 +1423,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1470,7 +1465,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1509,7 +1505,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1548,7 +1545,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1623,7 +1621,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1698,7 +1697,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/custom-property.json b/css/properties/custom-property.json
index 9daa6480e4fc06..fce76a2c139b88 100644
--- a/css/properties/custom-property.json
+++ b/css/properties/custom-property.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,7 +74,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -142,7 +145,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -177,7 +181,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -212,7 +217,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -263,7 +269,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -314,7 +321,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -365,7 +373,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -416,7 +425,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -459,7 +469,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "50"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/cx.json b/css/properties/cx.json
index 10f71678c3c8c8..1c0e20ae80e882 100644
--- a/css/properties/cx.json
+++ b/css/properties/cx.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/cy.json b/css/properties/cy.json
index 0f78e6c92fb48e..4fe44049e33900 100644
--- a/css/properties/cy.json
+++ b/css/properties/cy.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/d.json b/css/properties/d.json
index 21b3d7becfbd31..115dda6ac34dd2 100644
--- a/css/properties/d.json
+++ b/css/properties/d.json
@@ -3,6 +3,7 @@
     "properties": {
       "d": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/d",
           "spec_url": "https://svgwg.org/svg2-draft/paths.html#TheDProperty",
           "support": {
             "chrome": {
@@ -28,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/direction.json b/css/properties/direction.json
index 090157d5606250..2f90adfd8159b7 100644
--- a/css/properties/direction.json
+++ b/css/properties/direction.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/display.json b/css/properties/display.json
index c5a70a7eb7e62e..935a36fbd74cdb 100644
--- a/css/properties/display.json
+++ b/css/properties/display.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +137,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -219,7 +223,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +256,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -300,7 +306,8 @@
                 "version_added": "6.0",
                 "notes": "Samsung Internet added this earlier than the corresponding Chrome version would indicate."
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -382,7 +390,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -438,7 +447,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -487,7 +497,8 @@
                 "version_added": "6.0",
                 "notes": "Samsung Internet added this earlier than the corresponding Chrome version would indicate."
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -523,7 +534,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -560,7 +572,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -597,7 +610,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -635,7 +649,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -667,7 +682,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -700,7 +716,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -736,7 +753,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -747,6 +765,7 @@
         },
         "none": {
           "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display/#valdef-display-none",
             "support": {
               "chrome": {
                 "version_added": "1",
@@ -780,7 +799,8 @@
                 "version_added": "1.0",
                 "notes": "Chrome 65 stopped creating layout objects for elements inside an <code>&lt;iframe&gt;</code> with <code>display:none</code> applied."
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -815,7 +835,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -850,7 +871,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -885,7 +907,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -920,7 +943,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -955,7 +979,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -991,7 +1016,41 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "table-caption": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "≤80"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "≤72"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "≤13.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1027,7 +1086,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1063,7 +1123,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1099,7 +1160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1135,7 +1197,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1171,7 +1234,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1207,7 +1271,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1243,7 +1308,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/dominant-baseline.json b/css/properties/dominant-baseline.json
index c82e450e53e4cf..4e3b82dd5b7923 100644
--- a/css/properties/dominant-baseline.json
+++ b/css/properties/dominant-baseline.json
@@ -3,6 +3,7 @@
     "properties": {
       "dominant-baseline": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/dominant-baseline",
           "spec_url": [
             "https://svgwg.org/svg2-draft/text.html#DominantBaselineProperty",
             "https://drafts.csswg.org/css-inline/#dominant-baseline-property"
@@ -28,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -192,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -225,7 +232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -258,7 +266,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/empty-cells.json b/css/properties/empty-cells.json
index 75079810f65b85..39452fb4b2ccf5 100644
--- a/css/properties/empty-cells.json
+++ b/css/properties/empty-cells.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/field-sizing.json b/css/properties/field-sizing.json
index de8ee85fbc99f5..ea258855637d01 100644
--- a/css/properties/field-sizing.json
+++ b/css/properties/field-sizing.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/fill-opacity.json b/css/properties/fill-opacity.json
index bd67400e4d758c..06563c185f7a47 100644
--- a/css/properties/fill-opacity.json
+++ b/css/properties/fill-opacity.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/fill-rule.json b/css/properties/fill-rule.json
index 01c94f14d31a1b..a704ba3b6725fc 100644
--- a/css/properties/fill-rule.json
+++ b/css/properties/fill-rule.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/fill.json b/css/properties/fill.json
index 5d63ace7f80e64..4bdecd388c539d 100644
--- a/css/properties/fill.json
+++ b/css/properties/fill.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/filter.json b/css/properties/filter.json
index a82d473095c344..0eca69c2a0a7b4 100644
--- a/css/properties/filter.json
+++ b/css/properties/filter.json
@@ -80,7 +80,8 @@
                 "prefix": "-webkit-",
                 "version_added": "4.4"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flex-basis.json b/css/properties/flex-basis.json
index b6f223284bb810..9f1a1623a65b2d 100644
--- a/css/properties/flex-basis.json
+++ b/css/properties/flex-basis.json
@@ -73,7 +73,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -119,7 +120,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +161,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +200,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,7 +278,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flex-direction.json b/css/properties/flex-direction.json
index 660089a0f3f56a..a0c2c23f1573d3 100644
--- a/css/properties/flex-direction.json
+++ b/css/properties/flex-direction.json
@@ -78,7 +78,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,7 +156,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -189,7 +192,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -231,7 +235,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flex-flow.json b/css/properties/flex-flow.json
index b1ba06f1258094..32c01b346fc3b7 100644
--- a/css/properties/flex-flow.json
+++ b/css/properties/flex-flow.json
@@ -65,7 +65,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/flex-grow.json b/css/properties/flex-grow.json
index e85906d8a7fb24..514bef4d4d2ee4 100644
--- a/css/properties/flex-grow.json
+++ b/css/properties/flex-grow.json
@@ -72,7 +72,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flex-shrink.json b/css/properties/flex-shrink.json
index 0f83fcbcc075c9..16a22476c13a87 100644
--- a/css/properties/flex-shrink.json
+++ b/css/properties/flex-shrink.json
@@ -76,7 +76,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/flex-wrap.json b/css/properties/flex-wrap.json
index a0235041a32cc2..fb6673fdc48c45 100644
--- a/css/properties/flex-wrap.json
+++ b/css/properties/flex-wrap.json
@@ -45,7 +45,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -114,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flex.json b/css/properties/flex.json
index fdf284fba7ed7a..784040903d8b68 100644
--- a/css/properties/flex.json
+++ b/css/properties/flex.json
@@ -78,7 +78,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/float.json b/css/properties/float.json
index 9c8e9a10ed7d76..fdf15e2aac5fd3 100644
--- a/css/properties/float.json
+++ b/css/properties/float.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/flood-color.json b/css/properties/flood-color.json
index 9b5c168a0225e1..a223f17cdedbec 100644
--- a/css/properties/flood-color.json
+++ b/css/properties/flood-color.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/flood-opacity.json b/css/properties/flood-opacity.json
index f33aa7b60532cb..2d58f9b241e773 100644
--- a/css/properties/flood-opacity.json
+++ b/css/properties/flood-opacity.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-family.json b/css/properties/font-family.json
index cbc28a3c7310fd..a9554bfd86a7ff 100644
--- a/css/properties/font-family.json
+++ b/css/properties/font-family.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -116,7 +118,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-feature-settings.json b/css/properties/font-feature-settings.json
index 0429da4cd56c02..c98a983135dbfa 100644
--- a/css/properties/font-feature-settings.json
+++ b/css/properties/font-feature-settings.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-feature-settings",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-feature-settings-prop",
+          "tags": [
+            "web-features:font-feature-settings"
+          ],
           "support": {
             "chrome": [
               {
@@ -49,7 +52,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,6 +64,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-feature-settings-normal-value",
+            "tags": [
+              "web-features:font-feature-settings"
+            ],
             "support": {
               "chrome": {
                 "version_added": "16"
@@ -83,7 +90,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-kerning.json b/css/properties/font-kerning.json
index ce280d0991bde6..ad67c2ddf916a9 100644
--- a/css/properties/font-kerning.json
+++ b/css/properties/font-kerning.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-kerning",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-kerning-prop",
+          "tags": [
+            "web-features:font-kerning"
+          ],
           "support": {
             "chrome": [
               {
@@ -48,7 +51,8 @@
                 "version_removed": "2.0"
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-language-override.json b/css/properties/font-language-override.json
index ca8a0cff6ab968..d340bc011176d1 100644
--- a/css/properties/font-language-override.json
+++ b/css/properties/font-language-override.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-language-override",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-language-override-prop",
+          "tags": [
+            "web-features:font-language-override"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-optical-sizing.json b/css/properties/font-optical-sizing.json
index ecb381b37cea4f..4488df0711b890 100644
--- a/css/properties/font-optical-sizing.json
+++ b/css/properties/font-optical-sizing.json
@@ -27,11 +27,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "11"
+              "version_added": "13.1"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -42,14 +43,19 @@
         "auto": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-optical-sizing-auto-value",
+            "tags": [
+              "web-features:font-optical-sizing"
+            ],
             "support": {
               "chrome": {
                 "version_added": "79"
               },
               "chrome_android": "mirror",
-              "edge": "mirror",
+              "edge": {
+                "version_added": "17"
+              },
               "firefox": {
-                "version_added": "≤72"
+                "version_added": "62"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -59,11 +65,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "≤13.1"
+                "version_added": "13.1"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -75,14 +82,19 @@
         "none": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-optical-sizing-none-value",
+            "tags": [
+              "web-features:font-optical-sizing"
+            ],
             "support": {
               "chrome": {
                 "version_added": "79"
               },
               "chrome_android": "mirror",
-              "edge": "mirror",
+              "edge": {
+                "version_added": "17"
+              },
               "firefox": {
-                "version_added": "≤72"
+                "version_added": "62"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -92,11 +104,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "≤13.1"
+                "version_added": "13.1"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-palette.json b/css/properties/font-palette.json
index 373e4f103b76ec..d90443a021f823 100644
--- a/css/properties/font-palette.json
+++ b/css/properties/font-palette.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -76,6 +78,9 @@
         "dark": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-palette-dark",
+            "tags": [
+              "web-features:font-palette"
+            ],
             "support": {
               "chrome": {
                 "version_added": "101"
@@ -97,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,6 +115,9 @@
         "light": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-palette-light",
+            "tags": [
+              "web-features:font-palette"
+            ],
             "support": {
               "chrome": {
                 "version_added": "101"
@@ -130,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,6 +152,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-palette-normal",
+            "tags": [
+              "web-features:font-palette"
+            ],
             "support": {
               "chrome": {
                 "version_added": "101"
@@ -163,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -200,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/font-size-adjust.json b/css/properties/font-size-adjust.json
index 62e5105ff0a44e..06d56a1d78ece3 100644
--- a/css/properties/font-size-adjust.json
+++ b/css/properties/font-size-adjust.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -49,6 +50,9 @@
         "from-font": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts-5/#valdef-font-size-adjust-from-font",
+            "tags": [
+              "web-features:font-size-adjust"
+            ],
             "support": {
               "chrome": {
                 "version_added": "127"
@@ -70,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -82,6 +87,9 @@
         "none": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts-5/#valdef-font-size-adjust-none",
+            "tags": [
+              "web-features:font-size-adjust"
+            ],
             "support": {
               "chrome": {
                 "version_added": "127"
@@ -103,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,6 +124,9 @@
         "two-values": {
           "__compat": {
             "description": "Two-value syntax",
+            "tags": [
+              "web-features:font-size-adjust"
+            ],
             "support": {
               "chrome": {
                 "version_added": "127"
@@ -136,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-size.json b/css/properties/font-size.json
index 2ad6fd786a14ab..a5dbf2e410fc74 100644
--- a/css/properties/font-size.json
+++ b/css/properties/font-size.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +147,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-smooth.json b/css/properties/font-smooth.json
index e86d45f8907af9..37e2e7741b0b76 100644
--- a/css/properties/font-smooth.json
+++ b/css/properties/font-smooth.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-stretch.json b/css/properties/font-stretch.json
index a099062193d442..5df231def059c0 100644
--- a/css/properties/font-stretch.json
+++ b/css/properties/font-stretch.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-style.json b/css/properties/font-style.json
index 520147176a4c80..aeb371e751bee7 100644
--- a/css/properties/font-style.json
+++ b/css/properties/font-style.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-synthesis-position.json b/css/properties/font-synthesis-position.json
index 9dcbbdaf1f910b..286cc5427cc8ba 100644
--- a/css/properties/font-synthesis-position.json
+++ b/css/properties/font-synthesis-position.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/font-synthesis-small-caps.json b/css/properties/font-synthesis-small-caps.json
index 3a7a6b121501a3..eeee737f6aae05 100644
--- a/css/properties/font-synthesis-small-caps.json
+++ b/css/properties/font-synthesis-small-caps.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-synthesis-style.json b/css/properties/font-synthesis-style.json
index 8878431b2dff25..83299e87116b3d 100644
--- a/css/properties/font-synthesis-style.json
+++ b/css/properties/font-synthesis-style.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-synthesis-weight.json b/css/properties/font-synthesis-weight.json
index 4e5834230744e1..181cc9714581d9 100644
--- a/css/properties/font-synthesis-weight.json
+++ b/css/properties/font-synthesis-weight.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-synthesis.json b/css/properties/font-synthesis.json
index 99fd3ccfdc621f..3e5cb4de5f7952 100644
--- a/css/properties/font-synthesis.json
+++ b/css/properties/font-synthesis.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +94,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -156,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-alternates.json b/css/properties/font-variant-alternates.json
index 8aa53250f8c4f5..74c7bef4e1bd76 100644
--- a/css/properties/font-variant-alternates.json
+++ b/css/properties/font-variant-alternates.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -116,6 +119,9 @@
         "historical-forms": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-alternates-historical-forms",
+            "tags": [
+              "web-features:font-variant-alternates"
+            ],
             "support": {
               "chrome": {
                 "version_added": "111"
@@ -137,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,6 +156,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-alternates-normal-value",
+            "tags": [
+              "web-features:font-variant-alternates"
+            ],
             "support": {
               "chrome": {
                 "version_added": "111"
@@ -170,7 +180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -208,7 +219,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -246,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,7 +297,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -322,7 +336,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-caps.json b/css/properties/font-variant-caps.json
index 1a26b647c2e806..d5e301576d9653 100644
--- a/css/properties/font-variant-caps.json
+++ b/css/properties/font-variant-caps.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-caps",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-caps-prop",
+          "tags": [
+            "web-features:font-variant-caps"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +41,9 @@
         "all-petite-caps": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-all-petite-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -58,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,6 +78,9 @@
         "all-small-caps": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-all-small-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -91,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,6 +115,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-all-small-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -124,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,6 +152,9 @@
         "petite-caps": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-petite-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -157,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,6 +189,9 @@
         "small-caps": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-small-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -190,7 +213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,6 +226,9 @@
         "titling-caps": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-titling-caps",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -223,7 +250,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,6 +263,9 @@
         "unicase": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-caps-unicase",
+            "tags": [
+              "web-features:font-variant-caps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -256,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-east-asian.json b/css/properties/font-variant-east-asian.json
index 3085ec5163403c..3e55c5b3a4eb70 100644
--- a/css/properties/font-variant-east-asian.json
+++ b/css/properties/font-variant-east-asian.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-east-asian",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-east-asian-prop",
+          "tags": [
+            "web-features:font-variant-east-asian"
+          ],
           "support": {
             "chrome": {
               "version_added": "63"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +41,9 @@
         "full-width": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-full-width",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -58,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,6 +78,9 @@
         "jis04": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-jis04",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -91,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,6 +115,9 @@
         "jis78": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-jis78",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -124,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,6 +152,9 @@
         "jis83": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-jis83",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -157,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,6 +189,9 @@
         "jis90": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-jis90",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -190,7 +213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,6 +226,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-east-asian-normal-value",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -223,7 +250,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,6 +263,9 @@
         "proportional-width": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-proportional-width",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -256,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,6 +300,9 @@
         "ruby": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-ruby",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -289,7 +324,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -301,6 +337,9 @@
         "simplified": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-simplified",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -322,7 +361,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -334,6 +374,9 @@
         "traditional": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-east-asian-traditional",
+            "tags": [
+              "web-features:font-variant-east-asian"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -355,7 +398,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-emoji.json b/css/properties/font-variant-emoji.json
index 0d4bf47963e8bd..0ea44e91e7b6a3 100644
--- a/css/properties/font-variant-emoji.json
+++ b/css/properties/font-variant-emoji.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-emoji",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-emoji-prop",
+          "tags": [
+            "web-features:font-variant-emoji"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -40,7 +43,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-variant-ligatures.json b/css/properties/font-variant-ligatures.json
index 1ed094a0527cad..6e36d47c51dcd0 100644
--- a/css/properties/font-variant-ligatures.json
+++ b/css/properties/font-variant-ligatures.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-ligatures",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-ligatures-prop",
+          "tags": [
+            "web-features:font-variant-ligatures"
+          ],
           "support": {
             "chrome": [
               {
@@ -46,7 +49,8 @@
                 "prefix": "-webkit-",
                 "version_added": "4.4"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,6 +61,9 @@
         "common-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-common-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -78,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,6 +98,9 @@
         "contextual": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-contextual",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -111,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -123,6 +135,9 @@
         "discretionary-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-discretionary-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -144,7 +159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -156,6 +172,9 @@
         "historical-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-historical-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -177,7 +196,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -189,6 +209,9 @@
         "no-common-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-no-historical-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -210,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -222,6 +246,9 @@
         "no-contextual": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-no-contextual",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -243,7 +270,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -255,6 +283,9 @@
         "no-discretionary-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-no-discretionary-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -276,7 +307,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -288,6 +320,9 @@
         "no-historical-ligatures": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-ligatures-no-historical-ligatures",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -309,7 +344,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -321,6 +357,9 @@
         "none": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-ligatures-none-value",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -342,7 +381,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -354,6 +394,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-ligatures-normal-value",
+            "tags": [
+              "web-features:font-variant-ligatures"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -375,7 +418,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-numeric.json b/css/properties/font-variant-numeric.json
index b65dad1196b7ca..38abc078d6b4ea 100644
--- a/css/properties/font-variant-numeric.json
+++ b/css/properties/font-variant-numeric.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-numeric",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-numeric-prop",
+          "tags": [
+            "web-features:font-variant-numeric"
+          ],
           "support": {
             "chrome": {
               "version_added": "52"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +41,9 @@
         "diagonal-fractions": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-diagonal-fractions",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -58,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,6 +78,9 @@
         "lining-nums": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-lining-nums",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -91,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,6 +115,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-numeric-normal-value",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -124,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,6 +152,9 @@
         "oldstyle-nums": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-oldstyle-nums",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -157,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,6 +189,9 @@
         "ordinal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-ordinal",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -190,7 +213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,6 +226,9 @@
         "proportional-nums": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-proportional-nums",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -223,7 +250,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,6 +263,9 @@
         "slashed-zero": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-slashed-zero",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -256,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,6 +300,9 @@
         "stacked-fractions": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-stacked-fractions",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -289,7 +324,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -301,6 +337,9 @@
         "tabular-nums": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-numeric-tabular-nums",
+            "tags": [
+              "web-features:font-variant-numeric"
+            ],
             "support": {
               "chrome": {
                 "version_added": "52"
@@ -322,7 +361,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant-position.json b/css/properties/font-variant-position.json
index 7caaa73c348c18..ef1f6a8d040174 100644
--- a/css/properties/font-variant-position.json
+++ b/css/properties/font-variant-position.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant-position",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-position-prop",
+          "tags": [
+            "web-features:font-variant-position"
+          ],
           "support": {
             "chrome": {
               "version_added": "117"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +41,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-position-normal-value",
+            "tags": [
+              "web-features:font-variant-position"
+            ],
             "support": {
               "chrome": {
                 "version_added": "117"
@@ -58,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,6 +78,9 @@
         "sub": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-position-sub",
+            "tags": [
+              "web-features:font-variant-position"
+            ],
             "support": {
               "chrome": {
                 "version_added": "117"
@@ -91,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,6 +115,9 @@
         "super": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-position-super",
+            "tags": [
+              "web-features:font-variant-position"
+            ],
             "support": {
               "chrome": {
                 "version_added": "117"
@@ -124,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variant.json b/css/properties/font-variant.json
index bf9881357f1553..6a3ca61b535f71 100644
--- a/css/properties/font-variant.json
+++ b/css/properties/font-variant.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variant",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-prop",
+          "tags": [
+            "web-features:font-variant"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -33,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +108,8 @@
               "webview_android": {
                 "version_added": false,
                 "notes": "Some operating systems may correctly omit accents in all-uppercase Greek."
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,6 +121,9 @@
         "historical-forms": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-alternates-historical-forms",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "111"
@@ -136,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,6 +158,9 @@
         "none": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-size-adjust-none-value",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "≤83"
@@ -169,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,6 +195,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-normal-value",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -204,7 +221,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,6 +234,9 @@
         "sub": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-position-sub",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "110"
@@ -237,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,6 +271,9 @@
         "super": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-fonts/#valdef-font-variant-position-super",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "110"
@@ -270,7 +295,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -282,6 +308,9 @@
         "turkic_is": {
           "__compat": {
             "description": "<code>i</code> → <code>İ</code> and <code>ı</code> → <code>I</code>",
+            "tags": [
+              "web-features:font-variant"
+            ],
             "support": {
               "chrome": {
                 "version_added": "31"
@@ -305,7 +334,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -340,7 +370,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font-variation-settings.json b/css/properties/font-variation-settings.json
index 0c9c7ffb8f9fc3..7ad5dd8b2dca5e 100644
--- a/css/properties/font-variation-settings.json
+++ b/css/properties/font-variation-settings.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-variation-settings",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variation-settings-def",
+          "tags": [
+            "web-features:font-variation-settings"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -32,7 +35,8 @@
               "notes": "Requires iOS 11 or later."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/font-weight.json b/css/properties/font-weight.json
index 763f1ae48db313..9cbaf1dd606d8c 100644
--- a/css/properties/font-weight.json
+++ b/css/properties/font-weight.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +211,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/font.json b/css/properties/font.json
index 67a784cc50ff24..da08fd64b59f57 100644
--- a/css/properties/font.json
+++ b/css/properties/font.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +180,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +219,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -252,7 +258,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -290,7 +297,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/forced-color-adjust.json b/css/properties/forced-color-adjust.json
index 5d45423e24079e..f3e09a8ae086f1 100644
--- a/css/properties/forced-color-adjust.json
+++ b/css/properties/forced-color-adjust.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/forced-color-adjust",
           "spec_url": "https://drafts.csswg.org/css-color-adjust/#forced-color-adjust-prop",
+          "tags": [
+            "web-features:forced-colors"
+          ],
           "support": {
             "chrome": {
               "version_added": "89"
@@ -35,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -46,6 +50,9 @@
         "auto": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-color-adjust/#valdef-forced-color-adjust-auto",
+            "tags": [
+              "web-features:forced-colors"
+            ],
             "support": {
               "chrome": {
                 "version_added": "89"
@@ -69,7 +76,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -81,6 +89,9 @@
         "none": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-color-adjust/#valdef-forced-color-adjust-none",
+            "tags": [
+              "web-features:forced-colors"
+            ],
             "support": {
               "chrome": {
                 "version_added": "89"
@@ -104,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -116,6 +128,9 @@
         "preserve-parent-color": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-color-adjust/#valdef-forced-color-adjust-preserve-parent-color",
+            "tags": [
+              "web-features:forced-colors"
+            ],
             "support": {
               "chrome": {
                 "version_added": "106"
@@ -137,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/gap.json b/css/properties/gap.json
index 94f80980c8ede6..4b35e2ed231ac2 100644
--- a/css/properties/gap.json
+++ b/css/properties/gap.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,7 +129,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -164,7 +167,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -202,7 +206,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -239,7 +244,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/glyph-orientation-vertical.json b/css/properties/glyph-orientation-vertical.json
index 352b40366a7b26..6f89cdede24abb 100644
--- a/css/properties/glyph-orientation-vertical.json
+++ b/css/properties/glyph-orientation-vertical.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-area.json b/css/properties/grid-area.json
index 9017174e057ea4..6ef5310e8879dc 100644
--- a/css/properties/grid-area.json
+++ b/css/properties/grid-area.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-auto-columns.json b/css/properties/grid-auto-columns.json
index 94e5e789fc7bdc..5f973f448942b9 100644
--- a/css/properties/grid-auto-columns.json
+++ b/css/properties/grid-auto-columns.json
@@ -49,7 +49,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-auto-flow.json b/css/properties/grid-auto-flow.json
index 640301ff0d34ee..9102d810f2432d 100644
--- a/css/properties/grid-auto-flow.json
+++ b/css/properties/grid-auto-flow.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/grid-auto-rows.json b/css/properties/grid-auto-rows.json
index 77fa1b6d8d4d29..4ad7350197616e 100644
--- a/css/properties/grid-auto-rows.json
+++ b/css/properties/grid-auto-rows.json
@@ -49,7 +49,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-column-end.json b/css/properties/grid-column-end.json
index 48e5bf84d0f1f0..b9f588562d3d19 100644
--- a/css/properties/grid-column-end.json
+++ b/css/properties/grid-column-end.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-column-start.json b/css/properties/grid-column-start.json
index 35f6cd8fc22b09..a8813bb9197712 100644
--- a/css/properties/grid-column-start.json
+++ b/css/properties/grid-column-start.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-column.json b/css/properties/grid-column.json
index 42404da33ae08b..d6e9cc1e6e3aa3 100644
--- a/css/properties/grid-column.json
+++ b/css/properties/grid-column.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-row-end.json b/css/properties/grid-row-end.json
index fc2a63e8c3a525..aa5da627e3e9a3 100644
--- a/css/properties/grid-row-end.json
+++ b/css/properties/grid-row-end.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-row-start.json b/css/properties/grid-row-start.json
index 8ada02a60c0555..79e2c5d02fa159 100644
--- a/css/properties/grid-row-start.json
+++ b/css/properties/grid-row-start.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-row.json b/css/properties/grid-row.json
index e616526910ee49..c9fe6f2615b771 100644
--- a/css/properties/grid-row.json
+++ b/css/properties/grid-row.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/grid-template-areas.json b/css/properties/grid-template-areas.json
index 78f0137e252695..490c978a282292 100644
--- a/css/properties/grid-template-areas.json
+++ b/css/properties/grid-template-areas.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/grid-template-columns.json b/css/properties/grid-template-columns.json
index b582c05d3ecc32..b35014396ed809 100644
--- a/css/properties/grid-template-columns.json
+++ b/css/properties/grid-template-columns.json
@@ -44,7 +44,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -112,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,7 +157,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -200,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -233,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -266,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -308,7 +315,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -341,7 +349,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -397,7 +406,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -434,7 +444,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/grid-template-rows.json b/css/properties/grid-template-rows.json
index 8fad673174c598..fd7af8aced1098 100644
--- a/css/properties/grid-template-rows.json
+++ b/css/properties/grid-template-rows.json
@@ -44,7 +44,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -112,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,7 +157,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +205,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -234,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -267,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -309,7 +316,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -342,7 +350,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -398,7 +407,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -435,7 +445,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/grid-template.json b/css/properties/grid-template.json
index 6cf9389f7f050e..83a4eaa6d18a8b 100644
--- a/css/properties/grid-template.json
+++ b/css/properties/grid-template.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/grid.json b/css/properties/grid.json
index b7e7a729421e92..0c81ca9a51e33a 100644
--- a/css/properties/grid.json
+++ b/css/properties/grid.json
@@ -34,7 +34,8 @@
               "version_added": "6.0",
               "notes": "This was added early so is out of sync with the equivalent Chromium version."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/hanging-punctuation.json b/css/properties/hanging-punctuation.json
index 891c86d8db66db..9e50f40c9f4cf0 100644
--- a/css/properties/hanging-punctuation.json
+++ b/css/properties/hanging-punctuation.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/height.json b/css/properties/height.json
index e868dcf5dd5fca..df07a2eb6794f7 100644
--- a/css/properties/height.json
+++ b/css/properties/height.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -192,7 +196,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -235,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -278,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -316,7 +323,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/hyphenate-character.json b/css/properties/hyphenate-character.json
index c4f96f709c0b16..e58c8733d52491 100644
--- a/css/properties/hyphenate-character.json
+++ b/css/properties/hyphenate-character.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/hyphenate-limit-chars.json b/css/properties/hyphenate-limit-chars.json
index ec924e0d7130dc..ad725a9f02fa55 100644
--- a/css/properties/hyphenate-limit-chars.json
+++ b/css/properties/hyphenate-limit-chars.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/hyphens.json b/css/properties/hyphens.json
index ae84a86e89234c..2532e2341b0c2e 100644
--- a/css/properties/hyphens.json
+++ b/css/properties/hyphens.json
@@ -73,7 +73,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -116,7 +117,8 @@
                 "version_added": "4.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -182,7 +185,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -215,7 +219,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -248,7 +253,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -281,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -314,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -347,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -380,7 +389,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -413,7 +423,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -446,7 +457,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -479,7 +491,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -512,7 +525,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -545,7 +559,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -578,7 +593,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -611,7 +627,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -644,7 +661,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -685,7 +703,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -718,7 +737,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -751,7 +771,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -784,7 +805,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -817,7 +839,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -850,7 +873,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -883,7 +907,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -916,7 +941,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -949,7 +975,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -982,7 +1009,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1015,7 +1043,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1048,7 +1077,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1081,7 +1111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1114,7 +1145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1147,7 +1179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1180,7 +1213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1213,7 +1247,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1246,7 +1281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1279,7 +1315,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1312,7 +1349,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1345,7 +1383,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1378,7 +1417,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1411,7 +1451,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1444,7 +1485,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1477,7 +1519,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1510,7 +1553,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1543,7 +1587,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1576,7 +1621,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1611,7 +1657,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1644,7 +1691,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1677,7 +1725,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1710,7 +1759,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1743,7 +1793,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1776,7 +1827,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1809,7 +1861,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1842,7 +1895,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1875,7 +1929,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1908,7 +1963,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1941,7 +1997,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1974,7 +2031,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2007,7 +2065,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2040,7 +2099,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2073,7 +2133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2106,7 +2167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2139,7 +2201,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2172,7 +2235,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2205,7 +2269,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/image-orientation.json b/css/properties/image-orientation.json
index 09d4bfe22a8c98..d73195df21abaa 100644
--- a/css/properties/image-orientation.json
+++ b/css/properties/image-orientation.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/image-rendering.json b/css/properties/image-rendering.json
index 994f62fc702279..05433cddee398f 100644
--- a/css/properties/image-rendering.json
+++ b/css/properties/image-rendering.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,7 +108,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -240,7 +246,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/ime-mode.json b/css/properties/ime-mode.json
index 2f5dd590daa203..2bcff9fa0e85b5 100644
--- a/css/properties/ime-mode.json
+++ b/css/properties/ime-mode.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/initial-letter.json b/css/properties/initial-letter.json
index 1e596d4d4eeadc..ac361c51e058de 100644
--- a/css/properties/initial-letter.json
+++ b/css/properties/initial-letter.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/initial-letter",
           "spec_url": "https://drafts.csswg.org/css-inline/#sizing-drop-initials",
+          "tags": [
+            "web-features:initial-letter"
+          ],
           "support": {
             "chrome": {
               "version_added": "110"
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-inline/#valdef-initial-letter-normal",
+            "tags": [
+              "web-features:initial-letter"
+            ],
             "support": {
               "chrome": {
                 "version_added": "110"
@@ -61,7 +68,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inline-size.json b/css/properties/inline-size.json
index b6aeaf1a99c62f..7152c53ccb4670 100644
--- a/css/properties/inline-size.json
+++ b/css/properties/inline-size.json
@@ -31,7 +31,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -109,7 +111,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -188,7 +192,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -228,7 +233,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-block-end.json b/css/properties/inset-block-end.json
index 28707ec513e936..41f59591d9a25f 100644
--- a/css/properties/inset-block-end.json
+++ b/css/properties/inset-block-end.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-block-start.json b/css/properties/inset-block-start.json
index 8b2c437dfb270e..57c7cb1874cd00 100644
--- a/css/properties/inset-block-start.json
+++ b/css/properties/inset-block-start.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-block.json b/css/properties/inset-block.json
index c71585dce36043..a15b6277b24879 100644
--- a/css/properties/inset-block.json
+++ b/css/properties/inset-block.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-inline-end.json b/css/properties/inset-inline-end.json
index 6650c9af992840..eabf01423e5a34 100644
--- a/css/properties/inset-inline-end.json
+++ b/css/properties/inset-inline-end.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-inline-start.json b/css/properties/inset-inline-start.json
index 93cd8d023a78f1..9680c473d7cea5 100644
--- a/css/properties/inset-inline-start.json
+++ b/css/properties/inset-inline-start.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset-inline.json b/css/properties/inset-inline.json
index 3453e079905492..e0968ff522a9db 100644
--- a/css/properties/inset-inline.json
+++ b/css/properties/inset-inline.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/inset.json b/css/properties/inset.json
index 24558e12bf0d0f..c7941ddd380901 100644
--- a/css/properties/inset.json
+++ b/css/properties/inset.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -96,7 +98,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/interpolate-size.json b/css/properties/interpolate-size.json
new file mode 100644
index 00000000000000..80789c82342b30
--- /dev/null
+++ b/css/properties/interpolate-size.json
@@ -0,0 +1,114 @@
+{
+  "css": {
+    "properties": {
+      "interpolate-size": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-values-5/#interpolate-size",
+          "support": {
+            "chrome": {
+              "version_added": "129"
+            },
+            "chrome_android": "mirror",
+            "edge": {
+              "version_added": false
+            },
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        },
+        "allow-keywords": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-values-5/#valdef-interpolate-size-allow-keywords",
+            "support": {
+              "chrome": {
+                "version_added": "129"
+              },
+              "chrome_android": "mirror",
+              "edge": {
+                "version_added": false
+              },
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "numeric-only": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-values-5/#valdef-interpolate-size-numeric-only",
+            "support": {
+              "chrome": {
+                "version_added": "129"
+              },
+              "chrome_android": "mirror",
+              "edge": {
+                "version_added": false
+              },
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/isolation.json b/css/properties/isolation.json
index 2cb9d899191dde..1525185173301d 100644
--- a/css/properties/isolation.json
+++ b/css/properties/isolation.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/justify-content.json b/css/properties/justify-content.json
index adee434ab83d8c..49a8841e4924b3 100644
--- a/css/properties/justify-content.json
+++ b/css/properties/justify-content.json
@@ -59,7 +59,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -113,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,7 +151,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -179,11 +182,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": "18"
+                  "version_added": "17.6"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -215,7 +219,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -248,7 +253,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -283,7 +289,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -334,7 +341,8 @@
               },
               "webview_android": {
                 "version_added": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/justify-items.json b/css/properties/justify-items.json
index 5c99e95b9562c7..da8ade6dfb9684 100644
--- a/css/properties/justify-items.json
+++ b/css/properties/justify-items.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/justify-self.json b/css/properties/justify-self.json
index a99e78a7fccc57..058ecce5a77470 100644
--- a/css/properties/justify-self.json
+++ b/css/properties/justify-self.json
@@ -30,7 +30,8 @@
             "samsunginternet_android": {
               "version_added": "6.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -110,7 +112,8 @@
               "samsunginternet_android": {
                 "version_added": "6.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/left.json b/css/properties/left.json
index 1706a1773bb041..d80d1f41cc4baf 100644
--- a/css/properties/left.json
+++ b/css/properties/left.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/letter-spacing.json b/css/properties/letter-spacing.json
index 4912c73c10bb60..e0d58388d642ab 100644
--- a/css/properties/letter-spacing.json
+++ b/css/properties/letter-spacing.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/lighting-color.json b/css/properties/lighting-color.json
index 6171abfdbfeea9..b32b40f0517260 100644
--- a/css/properties/lighting-color.json
+++ b/css/properties/lighting-color.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/line-break.json b/css/properties/line-break.json
index e978e1a2687eb2..75a32a34bfec93 100644
--- a/css/properties/line-break.json
+++ b/css/properties/line-break.json
@@ -59,7 +59,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -157,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -190,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -223,7 +228,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/line-clamp.json b/css/properties/line-clamp.json
index 3614f64b217bc2..6e06674761ce4f 100644
--- a/css/properties/line-clamp.json
+++ b/css/properties/line-clamp.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/line-height-step.json b/css/properties/line-height-step.json
index 13e467bbbd1bf6..72315537439fea 100644
--- a/css/properties/line-height-step.json
+++ b/css/properties/line-height-step.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/line-height.json b/css/properties/line-height.json
index 8f40821b01e144..7d68603a9e546a 100644
--- a/css/properties/line-height.json
+++ b/css/properties/line-height.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/list-style-image.json b/css/properties/list-style-image.json
index 592c67294b718f..d331a76ca4a5e2 100644
--- a/css/properties/list-style-image.json
+++ b/css/properties/list-style-image.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/list-style-position.json b/css/properties/list-style-position.json
index 5b87059bf455b3..cab77d60f3dc9b 100644
--- a/css/properties/list-style-position.json
+++ b/css/properties/list-style-position.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/list-style-type.json b/css/properties/list-style-type.json
index 6c8e5fff02aa33..998f364f353242 100644
--- a/css/properties/list-style-type.json
+++ b/css/properties/list-style-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,7 +120,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +162,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -198,7 +202,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -275,7 +281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -314,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -352,7 +360,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -385,7 +394,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -424,7 +434,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -457,7 +468,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -496,7 +508,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -535,7 +548,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -586,7 +600,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -625,7 +640,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -664,7 +680,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -703,7 +720,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -742,7 +760,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -775,7 +794,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -808,7 +828,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -849,7 +870,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -890,7 +912,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -931,7 +954,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -972,7 +996,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1013,7 +1038,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1054,7 +1080,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1087,7 +1114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1128,7 +1156,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1169,7 +1198,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1202,7 +1232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1243,7 +1274,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1284,7 +1316,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1325,7 +1358,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1366,7 +1400,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1407,7 +1442,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1442,7 +1478,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1477,7 +1514,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1518,7 +1556,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1558,7 +1597,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1596,7 +1636,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1635,7 +1676,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1674,7 +1716,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1713,7 +1756,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1746,7 +1790,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1779,7 +1824,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1814,7 +1860,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1849,7 +1896,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1884,7 +1932,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1923,7 +1972,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1962,7 +2012,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2001,7 +2052,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2036,7 +2088,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2071,7 +2124,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2110,7 +2164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2143,7 +2198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2176,7 +2232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2209,7 +2266,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2248,7 +2306,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2287,7 +2346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2320,7 +2380,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2359,7 +2420,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2400,7 +2462,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2441,7 +2504,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2482,7 +2546,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2521,7 +2586,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2560,7 +2626,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2593,7 +2660,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2632,7 +2700,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2667,7 +2736,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2705,7 +2775,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2744,7 +2815,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2782,7 +2854,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2821,7 +2894,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2859,7 +2933,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2898,7 +2973,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2937,7 +3013,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2975,7 +3052,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3014,7 +3092,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3047,7 +3126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3081,7 +3161,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3120,7 +3201,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3159,7 +3241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3198,7 +3281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3231,7 +3315,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3269,7 +3354,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3307,7 +3393,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3345,7 +3432,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3383,7 +3471,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3421,7 +3510,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3460,7 +3550,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3499,7 +3590,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3538,7 +3630,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3571,7 +3664,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3621,7 +3715,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3662,7 +3757,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3701,7 +3797,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3742,7 +3839,8 @@
               "webview_android": {
                 "version_added": "3",
                 "version_removed": "45"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3781,7 +3879,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3814,7 +3913,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/list-style.json b/css/properties/list-style.json
index aad3d629fcd57d..23bb576d70fc53 100644
--- a/css/properties/list-style.json
+++ b/css/properties/list-style.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/margin-block-end.json b/css/properties/margin-block-end.json
index 5ead0dd6e9402d..a46842413cdea8 100644
--- a/css/properties/margin-block-end.json
+++ b/css/properties/margin-block-end.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-block-start.json b/css/properties/margin-block-start.json
index 66b9658cb81d95..c04b8040c03911 100644
--- a/css/properties/margin-block-start.json
+++ b/css/properties/margin-block-start.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-block.json b/css/properties/margin-block.json
index 15237e5266a3e5..1e7fb316d27a7a 100644
--- a/css/properties/margin-block.json
+++ b/css/properties/margin-block.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-bottom.json b/css/properties/margin-bottom.json
index a6cbaa7ac78a75..21a4a231870518 100644
--- a/css/properties/margin-bottom.json
+++ b/css/properties/margin-bottom.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/margin-inline-end.json b/css/properties/margin-inline-end.json
index c799a5c14429d5..4acc7877ce553b 100644
--- a/css/properties/margin-inline-end.json
+++ b/css/properties/margin-inline-end.json
@@ -60,7 +60,8 @@
                 "alternative_name": "-webkit-margin-end",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-inline-start.json b/css/properties/margin-inline-start.json
index 2d30eeb169ee60..099410fe8a51e4 100644
--- a/css/properties/margin-inline-start.json
+++ b/css/properties/margin-inline-start.json
@@ -60,7 +60,8 @@
                 "alternative_name": "-webkit-margin-start",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-inline.json b/css/properties/margin-inline.json
index c79118853843cc..6867e2b2ec7db9 100644
--- a/css/properties/margin-inline.json
+++ b/css/properties/margin-inline.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/margin-left.json b/css/properties/margin-left.json
index 580b99419562d2..8dd4cda9bda933 100644
--- a/css/properties/margin-left.json
+++ b/css/properties/margin-left.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/margin-right.json b/css/properties/margin-right.json
index 29dae94803680f..676ca94db180ff 100644
--- a/css/properties/margin-right.json
+++ b/css/properties/margin-right.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/margin-top.json b/css/properties/margin-top.json
index a404c28d0947eb..18d95d3584e769 100644
--- a/css/properties/margin-top.json
+++ b/css/properties/margin-top.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/margin-trim.json b/css/properties/margin-trim.json
index 64a2c684743217..055f7ef6732911 100644
--- a/css/properties/margin-trim.json
+++ b/css/properties/margin-trim.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -144,7 +147,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -182,7 +186,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -220,7 +225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -258,7 +264,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/margin.json b/css/properties/margin.json
index 2d0fc99c7510e9..bb87ea93049aa2 100644
--- a/css/properties/margin.json
+++ b/css/properties/margin.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/marker-end.json b/css/properties/marker-end.json
index feac0d99ea9493..92402e58028dc2 100644
--- a/css/properties/marker-end.json
+++ b/css/properties/marker-end.json
@@ -3,6 +3,7 @@
     "properties": {
       "marker-end": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/marker-end",
           "spec_url": "https://svgwg.org/svg2-draft/painting.html#VertexMarkerProperties",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/marker-mid.json b/css/properties/marker-mid.json
index ae71935a333aac..5cad6ac9fc4c64 100644
--- a/css/properties/marker-mid.json
+++ b/css/properties/marker-mid.json
@@ -3,6 +3,7 @@
     "properties": {
       "marker-mid": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/marker-mid",
           "spec_url": "https://svgwg.org/svg2-draft/painting.html#VertexMarkerProperties",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/marker-start.json b/css/properties/marker-start.json
index e17d3d8a107bd4..160c230caa8c17 100644
--- a/css/properties/marker-start.json
+++ b/css/properties/marker-start.json
@@ -3,6 +3,7 @@
     "properties": {
       "marker-start": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/marker-start",
           "spec_url": "https://svgwg.org/svg2-draft/painting.html#VertexMarkerProperties",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/marker.json b/css/properties/marker.json
index 8131f7924cb3e7..a83e1760a9e1a0 100644
--- a/css/properties/marker.json
+++ b/css/properties/marker.json
@@ -3,6 +3,7 @@
     "properties": {
       "marker": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/marker",
           "spec_url": "https://svgwg.org/svg2-draft/painting.html#MarkerShorthand",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border-outset.json b/css/properties/mask-border-outset.json
index cc50685603b72f..04d191fe039d02 100644
--- a/css/properties/mask-border-outset.json
+++ b/css/properties/mask-border-outset.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border-repeat.json b/css/properties/mask-border-repeat.json
index 091ad3c02eb9bb..270feaebe93646 100644
--- a/css/properties/mask-border-repeat.json
+++ b/css/properties/mask-border-repeat.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border-slice.json b/css/properties/mask-border-slice.json
index e33a2a3cafd35a..725c0b10e19e8c 100644
--- a/css/properties/mask-border-slice.json
+++ b/css/properties/mask-border-slice.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border-source.json b/css/properties/mask-border-source.json
index c7e762894df36d..8d4651bdefe10a 100644
--- a/css/properties/mask-border-source.json
+++ b/css/properties/mask-border-source.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border-width.json b/css/properties/mask-border-width.json
index 624fd54ce63af7..240960e8e94d7b 100644
--- a/css/properties/mask-border-width.json
+++ b/css/properties/mask-border-width.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-border.json b/css/properties/mask-border.json
index 9c010ea31b1318..05fb288499d8eb 100644
--- a/css/properties/mask-border.json
+++ b/css/properties/mask-border.json
@@ -37,7 +37,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-clip.json b/css/properties/mask-clip.json
index ee6c6fbd0b8baa..58c6b84cd1a642 100644
--- a/css/properties/mask-clip.json
+++ b/css/properties/mask-clip.json
@@ -44,7 +44,8 @@
             "webview_android": {
               "prefix": "-webkit-",
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,6 +78,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
@@ -111,6 +115,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
@@ -145,6 +152,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
@@ -179,6 +189,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
diff --git a/css/properties/mask-composite.json b/css/properties/mask-composite.json
index 8de48b423479e1..ab0b8093754ea9 100644
--- a/css/properties/mask-composite.json
+++ b/css/properties/mask-composite.json
@@ -46,7 +46,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +147,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -177,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/mask-image.json b/css/properties/mask-image.json
index 53c002d693f9ac..a855d2a9f81ffe 100644
--- a/css/properties/mask-image.json
+++ b/css/properties/mask-image.json
@@ -68,7 +68,8 @@
               "prefix": "-webkit-",
               "version_added": "2",
               "notes": "Initially, Android supported only <code>-webkit-</code> prefixed values for gradients (such as <code>-webkit-linear-gradient()</code>). Later, support for unprefixed values was added."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -137,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/mask-mode.json b/css/properties/mask-mode.json
index 2f536b6a181cd7..b943876070fbcb 100644
--- a/css/properties/mask-mode.json
+++ b/css/properties/mask-mode.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/mask-origin.json b/css/properties/mask-origin.json
index 059ac603059911..e7bb220bd0e8df 100644
--- a/css/properties/mask-origin.json
+++ b/css/properties/mask-origin.json
@@ -44,7 +44,8 @@
             "webview_android": {
               "prefix": "-webkit-",
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,7 +86,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,7 +129,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -160,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,7 +206,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +274,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/mask-position.json b/css/properties/mask-position.json
index 2795cd95d945dc..9185dee9e2b585 100644
--- a/css/properties/mask-position.json
+++ b/css/properties/mask-position.json
@@ -56,7 +56,8 @@
             "webview_android": {
               "prefix": "-webkit-",
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-repeat.json b/css/properties/mask-repeat.json
index decbd609fbe34d..c14cf8b7465501 100644
--- a/css/properties/mask-repeat.json
+++ b/css/properties/mask-repeat.json
@@ -56,7 +56,8 @@
             "webview_android": {
               "prefix": "-webkit-",
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-size.json b/css/properties/mask-size.json
index e56a2f5874bcb6..860f94bb78a2cf 100644
--- a/css/properties/mask-size.json
+++ b/css/properties/mask-size.json
@@ -61,7 +61,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/mask-type.json b/css/properties/mask-type.json
index 9fe41788e2c1bb..e22a323f470cc2 100644
--- a/css/properties/mask-type.json
+++ b/css/properties/mask-type.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/mask.json b/css/properties/mask.json
index 0ca1ea4a0ed0fb..35140cfad3b17f 100644
--- a/css/properties/mask.json
+++ b/css/properties/mask.json
@@ -97,7 +97,8 @@
                 "partial_implementation": true,
                 "notes": "While the property is recognized, values applied to it don't have any effect."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/math-depth.json b/css/properties/math-depth.json
index 17c49b60297d51..1d64ac3547ea0f 100644
--- a/css/properties/math-depth.json
+++ b/css/properties/math-depth.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/math-shift.json b/css/properties/math-shift.json
index 33bb3e69ab6c35..048a46c62597d7 100644
--- a/css/properties/math-shift.json
+++ b/css/properties/math-shift.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/math-style.json b/css/properties/math-style.json
index 3ad68d621b0749..d081e8d6de5d51 100644
--- a/css/properties/math-style.json
+++ b/css/properties/math-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/max-block-size.json b/css/properties/max-block-size.json
index 08447260b2bb29..e227c58c164674 100644
--- a/css/properties/max-block-size.json
+++ b/css/properties/max-block-size.json
@@ -31,7 +31,8 @@
             "samsunginternet_android": {
               "version_added": "5.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -182,7 +186,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -222,7 +227,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/max-height.json b/css/properties/max-height.json
index a6c90d23478398..fa4d20fe7f6193 100644
--- a/css/properties/max-height.json
+++ b/css/properties/max-height.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -135,7 +137,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -223,7 +227,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -272,7 +277,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -305,7 +311,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/max-inline-size.json b/css/properties/max-inline-size.json
index 73e549cff5e8ae..80a80f605b12c7 100644
--- a/css/properties/max-inline-size.json
+++ b/css/properties/max-inline-size.json
@@ -35,7 +35,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -113,7 +115,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -190,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -228,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/max-width.json b/css/properties/max-width.json
index 85a1e748af5908..a87289701894fe 100644
--- a/css/properties/max-width.json
+++ b/css/properties/max-width.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -133,7 +135,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -239,7 +243,8 @@
                   "prefix": "-webkit-",
                   "version_added": "≤37"
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -298,7 +303,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -333,7 +339,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -367,7 +374,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/min-block-size.json b/css/properties/min-block-size.json
index 644b3c5f29ce7e..ea79eef5e377ec 100644
--- a/css/properties/min-block-size.json
+++ b/css/properties/min-block-size.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -101,7 +103,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -178,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +221,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/min-height.json b/css/properties/min-height.json
index fc93853b68ab04..ea9612a8d519ce 100644
--- a/css/properties/min-height.json
+++ b/css/properties/min-height.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -109,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -168,7 +171,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +211,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -255,7 +260,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -303,7 +309,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -337,7 +344,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/min-inline-size.json b/css/properties/min-inline-size.json
index da2e55f2ea3d3a..247530d79787a6 100644
--- a/css/properties/min-inline-size.json
+++ b/css/properties/min-inline-size.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -107,7 +109,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -146,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -184,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -222,7 +227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/min-width.json b/css/properties/min-width.json
index 06d4706aaae8f0..944db3955419d0 100644
--- a/css/properties/min-width.json
+++ b/css/properties/min-width.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -120,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +177,8 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -263,7 +268,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -344,7 +350,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -377,7 +384,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/mix-blend-mode.json b/css/properties/mix-blend-mode.json
index 1dcdc280e57417..ae34d06d72ceb0 100644
--- a/css/properties/mix-blend-mode.json
+++ b/css/properties/mix-blend-mode.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -130,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/object-fit.json b/css/properties/object-fit.json
index 22e53d2b64db34..1fef106abdc5f8 100644
--- a/css/properties/object-fit.json
+++ b/css/properties/object-fit.json
@@ -54,7 +54,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,7 +87,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -119,7 +121,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +189,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/object-position.json b/css/properties/object-position.json
index 75209d1d9fab5e..183f5b2f921ef0 100644
--- a/css/properties/object-position.json
+++ b/css/properties/object-position.json
@@ -54,7 +54,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/object-view-box.json b/css/properties/object-view-box.json
index 8627c234de635a..51aac71d7dc635 100644
--- a/css/properties/object-view-box.json
+++ b/css/properties/object-view-box.json
@@ -4,6 +4,9 @@
       "object-view-box": {
         "__compat": {
           "spec_url": "https://drafts.csswg.org/css-images-5/#propdef-object-view-box",
+          "tags": [
+            "web-features:object-view-box"
+          ],
           "support": {
             "chrome": {
               "version_added": "104"
@@ -25,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -57,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/offset-anchor.json b/css/properties/offset-anchor.json
index a063d63edd7ed4..12e29522f4e432 100644
--- a/css/properties/offset-anchor.json
+++ b/css/properties/offset-anchor.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/offset-distance.json b/css/properties/offset-distance.json
index cf789b90086434..70906cf2d582b8 100644
--- a/css/properties/offset-distance.json
+++ b/css/properties/offset-distance.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/offset-path.json b/css/properties/offset-path.json
index c1510f3da4b8f1..68e5dad16ccebd 100644
--- a/css/properties/offset-path.json
+++ b/css/properties/offset-path.json
@@ -60,7 +60,8 @@
                 "version_added": "5.0"
               }
             ],
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -125,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -161,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -194,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -227,7 +232,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/offset-position.json b/css/properties/offset-position.json
index 3b4354c75f7d85..4e4badc4b34b90 100644
--- a/css/properties/offset-position.json
+++ b/css/properties/offset-position.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/offset-rotate.json b/css/properties/offset-rotate.json
index cbfbf589e312b4..1ebb7475e34f2d 100644
--- a/css/properties/offset-rotate.json
+++ b/css/properties/offset-rotate.json
@@ -39,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/offset.json b/css/properties/offset.json
index 3485f142bf0930..116916ed443b35 100644
--- a/css/properties/offset.json
+++ b/css/properties/offset.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/opacity.json b/css/properties/opacity.json
index 7e6e36ac5213ed..993b02ed2f70d6 100644
--- a/css/properties/opacity.json
+++ b/css/properties/opacity.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/opacity",
           "spec_url": "https://drafts.csswg.org/css-color/#transparency",
+          "tags": [
+            "web-features:opacity"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -46,7 +49,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,6 +61,9 @@
         "percentages": {
           "__compat": {
             "description": "Support for percentage opacity values",
+            "tags": [
+              "web-features:opacity"
+            ],
             "support": {
               "chrome": {
                 "version_added": "78"
@@ -78,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/order.json b/css/properties/order.json
index 405e167bb80c38..65f495d7c44e4f 100644
--- a/css/properties/order.json
+++ b/css/properties/order.json
@@ -66,7 +66,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/orphans.json b/css/properties/orphans.json
index 22fb578c594ae7..49973af1531745 100644
--- a/css/properties/orphans.json
+++ b/css/properties/orphans.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/outline-color.json b/css/properties/outline-color.json
index 560afe2a430a9e..deae1d5da3d790 100644
--- a/css/properties/outline-color.json
+++ b/css/properties/outline-color.json
@@ -39,7 +39,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/outline-offset.json b/css/properties/outline-offset.json
index cc18bdd1ca026e..35960950d8aba9 100644
--- a/css/properties/outline-offset.json
+++ b/css/properties/outline-offset.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/outline-style.json b/css/properties/outline-style.json
index 726934e75ad7e2..2d41325a7aa99e 100644
--- a/css/properties/outline-style.json
+++ b/css/properties/outline-style.json
@@ -42,7 +42,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -146,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +185,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +221,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +257,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -286,7 +293,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -321,7 +329,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -356,7 +365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -391,7 +401,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/outline-width.json b/css/properties/outline-width.json
index 48cefcf34c06cf..d15c9a020d38e2 100644
--- a/css/properties/outline-width.json
+++ b/css/properties/outline-width.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/outline.json b/css/properties/outline.json
index c07e311481bb2a..368df5db1f022b 100644
--- a/css/properties/outline.json
+++ b/css/properties/outline.json
@@ -89,7 +89,8 @@
                 "partial_implementation": true,
                 "notes": "Before Chrome 94, <code>outline</code> does not follow the shape of <code>border-radius</code>."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/overflow-anchor.json b/css/properties/overflow-anchor.json
index 30073a97c6c890..fe9a5bf323e00e 100644
--- a/css/properties/overflow-anchor.json
+++ b/css/properties/overflow-anchor.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overflow-block.json b/css/properties/overflow-block.json
index 7eee57f1b4d2a0..55a1071c706d7f 100644
--- a/css/properties/overflow-block.json
+++ b/css/properties/overflow-block.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/overflow-clip-margin.json b/css/properties/overflow-clip-margin.json
index a0788a1cd79a32..11c161969e1464 100644
--- a/css/properties/overflow-clip-margin.json
+++ b/css/properties/overflow-clip-margin.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -128,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/overflow-inline.json b/css/properties/overflow-inline.json
index 9fbd14de9df441..a7174858466361 100644
--- a/css/properties/overflow-inline.json
+++ b/css/properties/overflow-inline.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/overflow-wrap.json b/css/properties/overflow-wrap.json
index a3d3050c1461d0..5a4bcbed38f242 100644
--- a/css/properties/overflow-wrap.json
+++ b/css/properties/overflow-wrap.json
@@ -77,7 +77,8 @@
                 "alternative_name": "word-wrap",
                 "version_added": "1"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,7 +150,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -183,7 +186,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overflow-x.json b/css/properties/overflow-x.json
index 5f621b8fbc680d..91ef11ba721ca8 100644
--- a/css/properties/overflow-x.json
+++ b/css/properties/overflow-x.json
@@ -41,7 +41,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +102,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,7 +254,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overflow-y.json b/css/properties/overflow-y.json
index 7dd04075d2ed53..63c3ccfe6cf64f 100644
--- a/css/properties/overflow-y.json
+++ b/css/properties/overflow-y.json
@@ -41,7 +41,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -101,7 +102,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,7 +254,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overflow.json b/css/properties/overflow.json
index 5f99cd9f1a3f4c..a879da75023971 100644
--- a/css/properties/overflow.json
+++ b/css/properties/overflow.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +98,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +178,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -211,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -246,7 +251,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -281,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overlay.json b/css/properties/overlay.json
index 236b10740307f4..23a9bbac213769 100644
--- a/css/properties/overlay.json
+++ b/css/properties/overlay.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/overlay",
           "spec_url": "https://drafts.csswg.org/css-position-4/#overlay",
+          "tags": [
+            "web-features:overlay"
+          ],
           "support": {
             "chrome": {
               "version_added": "117"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -58,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -91,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/overscroll-behavior-block.json b/css/properties/overscroll-behavior-block.json
index 6c411668431354..c8f24c5808430f 100644
--- a/css/properties/overscroll-behavior-block.json
+++ b/css/properties/overscroll-behavior-block.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overscroll-behavior-inline.json b/css/properties/overscroll-behavior-inline.json
index a16cd31d210676..20c736582446f9 100644
--- a/css/properties/overscroll-behavior-inline.json
+++ b/css/properties/overscroll-behavior-inline.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overscroll-behavior-x.json b/css/properties/overscroll-behavior-x.json
index 14957dd9d994db..8a45203f131c19 100644
--- a/css/properties/overscroll-behavior-x.json
+++ b/css/properties/overscroll-behavior-x.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overscroll-behavior-y.json b/css/properties/overscroll-behavior-y.json
index 1099fcbdc46f7c..3166dfe0470bb5 100644
--- a/css/properties/overscroll-behavior-y.json
+++ b/css/properties/overscroll-behavior-y.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/overscroll-behavior.json b/css/properties/overscroll-behavior.json
index fca8dfc89d9db7..1a51d7dde1096a 100644
--- a/css/properties/overscroll-behavior.json
+++ b/css/properties/overscroll-behavior.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/padding-block-end.json b/css/properties/padding-block-end.json
index 2cae17075788c8..eb3f5f16fa8a10 100644
--- a/css/properties/padding-block-end.json
+++ b/css/properties/padding-block-end.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-block-start.json b/css/properties/padding-block-start.json
index 2c187387145ce0..714497a907a6e6 100644
--- a/css/properties/padding-block-start.json
+++ b/css/properties/padding-block-start.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-block.json b/css/properties/padding-block.json
index 9d8c59c5871717..56d0d34f449d55 100644
--- a/css/properties/padding-block.json
+++ b/css/properties/padding-block.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-bottom.json b/css/properties/padding-bottom.json
index 014cdf6d14cae5..6fb6c8a04379f2 100644
--- a/css/properties/padding-bottom.json
+++ b/css/properties/padding-bottom.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-inline-end.json b/css/properties/padding-inline-end.json
index 02bb8dbb1e5f11..f888248a480c8a 100644
--- a/css/properties/padding-inline-end.json
+++ b/css/properties/padding-inline-end.json
@@ -60,7 +60,8 @@
                 "alternative_name": "-webkit-padding-end",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-inline-start.json b/css/properties/padding-inline-start.json
index f467c1fb7f1596..e5cd9542d605ac 100644
--- a/css/properties/padding-inline-start.json
+++ b/css/properties/padding-inline-start.json
@@ -60,7 +60,8 @@
                 "alternative_name": "-webkit-padding-start",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-inline.json b/css/properties/padding-inline.json
index 81d59cb932b2c6..6393a4d9d79069 100644
--- a/css/properties/padding-inline.json
+++ b/css/properties/padding-inline.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-left.json b/css/properties/padding-left.json
index e535792a11c105..fa11c9eab07c7e 100644
--- a/css/properties/padding-left.json
+++ b/css/properties/padding-left.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-right.json b/css/properties/padding-right.json
index 39d843b588d149..a1cfddc32389b8 100644
--- a/css/properties/padding-right.json
+++ b/css/properties/padding-right.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding-top.json b/css/properties/padding-top.json
index bbc751b5086aad..037da5ec6d0664 100644
--- a/css/properties/padding-top.json
+++ b/css/properties/padding-top.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/padding.json b/css/properties/padding.json
index e687d2d72dc0ae..61a4965190e6fc 100644
--- a/css/properties/padding.json
+++ b/css/properties/padding.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/page-break-after.json b/css/properties/page-break-after.json
index a4090a65bf2357..bb0fcdc475528d 100644
--- a/css/properties/page-break-after.json
+++ b/css/properties/page-break-after.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +184,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -215,7 +220,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/page-break-before.json b/css/properties/page-break-before.json
index 134ae457606dd5..ff54132df75f6e 100644
--- a/css/properties/page-break-before.json
+++ b/css/properties/page-break-before.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +184,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -215,7 +220,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/page-break-inside.json b/css/properties/page-break-inside.json
index 01b029fc9295bf..68d3b9ec049602 100644
--- a/css/properties/page-break-inside.json
+++ b/css/properties/page-break-inside.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/page.json b/css/properties/page.json
index 4e5fc08729e81e..03f27533b9ee41 100644
--- a/css/properties/page.json
+++ b/css/properties/page.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/paint-order.json b/css/properties/paint-order.json
index 115641a59355bb..5fe3090262615f 100644
--- a/css/properties/paint-order.json
+++ b/css/properties/paint-order.json
@@ -40,7 +40,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/perspective-origin.json b/css/properties/perspective-origin.json
index 84140ea8c10d69..b564832524c2ea 100644
--- a/css/properties/perspective-origin.json
+++ b/css/properties/perspective-origin.json
@@ -76,7 +76,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +116,8 @@
                 "version_added": "2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -155,7 +157,8 @@
                 "version_added": "2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +198,8 @@
                 "version_added": "2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +239,8 @@
                 "version_added": "2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -275,7 +280,8 @@
                 "version_added": "2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/perspective.json b/css/properties/perspective.json
index 93f66ee8d433af..e794ed95855f62 100644
--- a/css/properties/perspective.json
+++ b/css/properties/perspective.json
@@ -77,7 +77,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -114,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/place-content.json b/css/properties/place-content.json
index 79c1ede7711eda..023de628f219d9 100644
--- a/css/properties/place-content.json
+++ b/css/properties/place-content.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/place-items.json b/css/properties/place-items.json
index 6008ff4cd73f15..859b5db1706916 100644
--- a/css/properties/place-items.json
+++ b/css/properties/place-items.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/place-self.json b/css/properties/place-self.json
index 2dc50f85a32f0f..8e7e742a96cfe6 100644
--- a/css/properties/place-self.json
+++ b/css/properties/place-self.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/pointer-events.json b/css/properties/pointer-events.json
index f5a2b1a09876c0..2e15a46467cdc4 100644
--- a/css/properties/pointer-events.json
+++ b/css/properties/pointer-events.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/position-anchor.json b/css/properties/position-anchor.json
index 40f880226ed474..2466710bafa955 100644
--- a/css/properties/position-anchor.json
+++ b/css/properties/position-anchor.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/inset-area.json b/css/properties/position-area.json
similarity index 86%
rename from css/properties/inset-area.json
rename to css/properties/position-area.json
index c7a3eb9f918039..92578018cb8cfd 100644
--- a/css/properties/inset-area.json
+++ b/css/properties/position-area.json
@@ -1,17 +1,23 @@
 {
   "css": {
     "properties": {
-      "inset-area": {
+      "position-area": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/inset-area",
-          "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#inset-area",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/position-area",
+          "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#position-area",
           "tags": [
             "web-features:anchor-positioning"
           ],
           "support": {
-            "chrome": {
-              "version_added": "125"
-            },
+            "chrome": [
+              {
+                "version_added": "129"
+              },
+              {
+                "alternative_name": "inset-area",
+                "version_added": "125"
+              }
+            ],
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
@@ -30,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -40,13 +47,13 @@
         },
         "block-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-block-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-block-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -66,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -77,13 +85,13 @@
         },
         "block-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-block-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-block-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -103,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -114,13 +123,13 @@
         },
         "bottom": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-bottom",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-bottom",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -140,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -151,13 +161,13 @@
         },
         "center": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-center",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-center",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -177,7 +187,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -188,13 +199,13 @@
         },
         "end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -214,7 +225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -225,13 +237,13 @@
         },
         "inline-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-inline-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-inline-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -251,7 +263,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -262,13 +275,13 @@
         },
         "inline-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-inline-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-inline-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -288,7 +301,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -299,13 +313,13 @@
         },
         "left": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-left",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-left",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -325,7 +339,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -336,13 +351,13 @@
         },
         "none": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-none",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-none",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -362,7 +377,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -373,13 +389,13 @@
         },
         "right": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-right",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-right",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -399,7 +415,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -410,13 +427,13 @@
         },
         "self-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-self-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-self-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -436,7 +453,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -447,13 +465,13 @@
         },
         "self-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-self-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-self-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -473,7 +491,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -484,13 +503,13 @@
         },
         "span-all": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-all",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-all",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -510,7 +529,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -521,13 +541,13 @@
         },
         "span-block-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-block-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-block-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -547,7 +567,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -558,13 +579,13 @@
         },
         "span-block-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-block-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-block-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -584,7 +605,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -595,13 +617,13 @@
         },
         "span-bottom": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-bottom",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-bottom",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -621,7 +643,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -632,13 +655,13 @@
         },
         "span-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -658,7 +681,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -669,13 +693,13 @@
         },
         "span-inline-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-inline-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-inline-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -695,7 +719,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -706,13 +731,13 @@
         },
         "span-inline-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-inline-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-inline-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -732,7 +757,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -743,13 +769,13 @@
         },
         "span-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -769,7 +795,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -780,13 +807,13 @@
         },
         "span-top": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-top",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-top",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -806,7 +833,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -817,13 +845,13 @@
         },
         "span-x-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-x-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-x-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -843,7 +871,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -854,13 +883,13 @@
         },
         "span-x-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-x-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-x-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -880,7 +909,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -891,13 +921,13 @@
         },
         "span-y-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-y-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-y-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -917,7 +947,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -928,13 +959,13 @@
         },
         "span-y-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-span-y-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-span-y-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -954,7 +985,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -965,13 +997,13 @@
         },
         "start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -991,7 +1023,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1002,13 +1035,13 @@
         },
         "top": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-top",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-top",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1028,7 +1061,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1039,13 +1073,13 @@
         },
         "x-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-x-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-x-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1065,7 +1099,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1076,13 +1111,13 @@
         },
         "x-self-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-x-self-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-x-self-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1102,7 +1137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1113,13 +1149,13 @@
         },
         "x-self-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-x-self-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-x-self-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1139,7 +1175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1150,13 +1187,13 @@
         },
         "x-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-x-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-x-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1176,7 +1213,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1187,13 +1225,13 @@
         },
         "y-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-y-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-y-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1213,7 +1251,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1224,13 +1263,13 @@
         },
         "y-self-end": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-y-self-end",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-y-self-end",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1250,7 +1289,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1261,13 +1301,13 @@
         },
         "y-self-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-y-self-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-y-self-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1287,7 +1327,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1298,13 +1339,13 @@
         },
         "y-start": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-inset-area-y-start",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-area-y-start",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -1324,7 +1365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/position-try-fallbacks.json b/css/properties/position-try-fallbacks.json
index e6f4407ed33b03..08266e1e6f102b 100644
--- a/css/properties/position-try-fallbacks.json
+++ b/css/properties/position-try-fallbacks.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -53,7 +54,7 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "128"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -73,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -90,7 +92,7 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "128"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -110,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -127,7 +130,7 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "125"
+                "version_added": "128"
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -147,7 +150,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -156,28 +160,21 @@
             }
           }
         },
-        "inset-area": {
+        "none": {
           "__compat": {
-            "description": "<code>inset-area</code> values",
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#propdef-inset-area",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-try-fallbacks-none",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
-              "chrome": [
-                {
-                  "version_added": "128"
-                },
-                {
-                  "version_added": "125",
-                  "version_removed": "128",
-                  "notes": "<code>inset-area</code> values had to be wrapped inside an <code>inset-area()</code> function."
-                }
-              ],
+              "chrome": {
+                "version_added": "128"
+              },
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false
+                "version_added": false,
+                "impl_url": "https://bugzil.la/1838746"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -191,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -200,21 +198,28 @@
             }
           }
         },
-        "none": {
+        "position-area": {
           "__compat": {
-            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-try-fallbacks-none",
+            "description": "<code>position-area</code> values",
+            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#valdef-position-try-fallbacks-position-area",
             "tags": [
               "web-features:anchor-positioning"
             ],
             "support": {
-              "chrome": {
-                "version_added": "125"
-              },
+              "chrome": [
+                {
+                  "version_added": "128"
+                },
+                {
+                  "version_added": "125",
+                  "version_removed": "128",
+                  "notes": "<code>inset-area</code> values had to be wrapped inside an <code>inset-area()</code> function."
+                }
+              ],
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1838746"
+                "version_added": false
               },
               "firefox_android": "mirror",
               "ie": {
@@ -228,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/position-try-order.json b/css/properties/position-try-order.json
index e949f08de7f454..af0c0c9803c5f8 100644
--- a/css/properties/position-try-order.json
+++ b/css/properties/position-try-order.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -177,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -214,7 +219,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/position-try.json b/css/properties/position-try.json
index 386d4dda99a70a..afa4304f5b26c9 100644
--- a/css/properties/position-try.json
+++ b/css/properties/position-try.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/position-visibility.json b/css/properties/position-visibility.json
index bbc2427a76d0ee..14652a8c5e0de5 100644
--- a/css/properties/position-visibility.json
+++ b/css/properties/position-visibility.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/position.json b/css/properties/position.json
index 74bdf51efcf2a1..7c3b134253b7c9 100644
--- a/css/properties/position.json
+++ b/css/properties/position.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +185,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +221,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +257,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -295,7 +302,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/print-color-adjust.json b/css/properties/print-color-adjust.json
index 47aa9500ceefa1..f259762aad00e9 100644
--- a/css/properties/print-color-adjust.json
+++ b/css/properties/print-color-adjust.json
@@ -67,7 +67,8 @@
               "prefix": "-webkit-",
               "version_added": "4.4",
               "notes": "WebView does not print backgrounds of the <a href='https://developer.mozilla.org/docs/Web/HTML/Element/body'><code>&lt;body&gt;</code></a> element. If this property is set to <code>exact</code> for the <code>&lt;body&gt;</code> element, it will apply only to its descendants."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -132,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/quotes.json b/css/properties/quotes.json
index bf4e3a20a4f773..b44e73899b9359 100644
--- a/css/properties/quotes.json
+++ b/css/properties/quotes.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/r.json b/css/properties/r.json
index 1420910e1bf24c..035c488dd800d5 100644
--- a/css/properties/r.json
+++ b/css/properties/r.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/-webkit-initial-letter.json b/css/properties/reading-flow.json
similarity index 59%
rename from css/properties/-webkit-initial-letter.json
rename to css/properties/reading-flow.json
index a144252c1c975b..fb7666a7be477a 100644
--- a/css/properties/-webkit-initial-letter.json
+++ b/css/properties/reading-flow.json
@@ -1,11 +1,20 @@
 {
   "css": {
     "properties": {
-      "-webkit-initial-letter": {
+      "reading-flow": {
         "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-display-4/#reading-flow",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "128",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "layout.css.reading-flow.enabled",
+                  "value_to_set": "true"
+                }
+              ],
+              "impl_url": "https://crbug.com/40932006"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
@@ -20,15 +29,16 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "≤13.1"
+              "version_added": false
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
-            "standard_track": false,
+            "standard_track": true,
             "deprecated": false
           }
         }
diff --git a/css/properties/resize.json b/css/properties/resize.json
index 2219618f5a1861..7a3a67304ec408 100644
--- a/css/properties/resize.json
+++ b/css/properties/resize.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/resize",
           "spec_url": "https://drafts.csswg.org/css-ui/#resize",
+          "tags": [
+            "web-features:resize"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -33,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -43,6 +47,9 @@
         },
         "block": {
           "__compat": {
+            "tags": [
+              "web-features:resize"
+            ],
             "support": {
               "chrome": {
                 "version_added": "118"
@@ -66,7 +73,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -78,6 +86,9 @@
         "block_level_support": {
           "__compat": {
             "description": "Support on block level, replaced, table cell, or inline block elements",
+            "tags": [
+              "web-features:resize"
+            ],
             "support": {
               "chrome": {
                 "version_added": "4"
@@ -104,7 +115,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,6 +127,9 @@
         },
         "inline": {
           "__compat": {
+            "tags": [
+              "web-features:resize"
+            ],
             "support": {
               "chrome": {
                 "version_added": "118"
@@ -138,7 +153,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/right.json b/css/properties/right.json
index f791e518820a54..2b149cc9237c54 100644
--- a/css/properties/right.json
+++ b/css/properties/right.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/rotate.json b/css/properties/rotate.json
index e16e387389fbe2..7c7f3837b398fb 100644
--- a/css/properties/rotate.json
+++ b/css/properties/rotate.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/row-gap.json b/css/properties/row-gap.json
index a3b7b73b8d9bdb..df73109f86ed11 100644
--- a/css/properties/row-gap.json
+++ b/css/properties/row-gap.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +137,8 @@
                   "version_added": "6.0"
                 }
               ],
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/ruby-align.json b/css/properties/ruby-align.json
index f632d648e28b90..258547ba8eeb7a 100644
--- a/css/properties/ruby-align.json
+++ b/css/properties/ruby-align.json
@@ -23,11 +23,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -55,11 +56,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -88,11 +90,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,11 +124,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,11 +158,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/ruby-position.json b/css/properties/ruby-position.json
index bd390c861a204a..64cb7178c5719c 100644
--- a/css/properties/ruby-position.json
+++ b/css/properties/ruby-position.json
@@ -42,16 +42,22 @@
             "oculus": "mirror",
             "opera": "mirror",
             "opera_android": "mirror",
-            "safari": {
-              "prefix": "-webkit-",
-              "version_added": "7",
-              "notes": "Implemented as a non-standard, prefixed, version of <code>ruby-position</code>, <code>-webkit-ruby-position</code>: it has two properties: <code>before</code> and <code>after</code> (both equivalent, for ltr and rtl scripts to the standard <code>over</code> value used with <code>ruby-align: start</code>)."
-            },
+            "safari": [
+              {
+                "version_added": "preview"
+              },
+              {
+                "prefix": "-webkit-",
+                "version_added": "7",
+                "notes": "Implemented as a non-standard, prefixed, version of <code>ruby-position</code>, <code>-webkit-ruby-position</code>: it has two properties: <code>before</code> and <code>after</code> (both equivalent, for ltr and rtl scripts to the standard <code>over</code> value used with <code>ruby-align: start</code>)."
+              }
+            ],
             "safari_ios": "mirror",
             "samsunginternet_android": {
               "version_added": "14.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,7 +89,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/rx.json b/css/properties/rx.json
index 483f9126afba92..218a3c2996a4f9 100644
--- a/css/properties/rx.json
+++ b/css/properties/rx.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/ry.json b/css/properties/ry.json
index a47f1cde21730a..70620295336506 100644
--- a/css/properties/ry.json
+++ b/css/properties/ry.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scale.json b/css/properties/scale.json
index 938c3ddc3e2eea..ef851659110b18 100644
--- a/css/properties/scale.json
+++ b/css/properties/scale.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-behavior.json b/css/properties/scroll-behavior.json
index e4db48b1a01b0a..05098e4939c355 100644
--- a/css/properties/scroll-behavior.json
+++ b/css/properties/scroll-behavior.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-margin-block-end.json b/css/properties/scroll-margin-block-end.json
index 497e4b176e21a0..d113088e02d403 100644
--- a/css/properties/scroll-margin-block-end.json
+++ b/css/properties/scroll-margin-block-end.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-block-start.json b/css/properties/scroll-margin-block-start.json
index e60da67ba9e744..0eba89151ca2f3 100644
--- a/css/properties/scroll-margin-block-start.json
+++ b/css/properties/scroll-margin-block-start.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-block.json b/css/properties/scroll-margin-block.json
index 3f2aa8607241eb..94dd38db2e2eb6 100644
--- a/css/properties/scroll-margin-block.json
+++ b/css/properties/scroll-margin-block.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-bottom.json b/css/properties/scroll-margin-bottom.json
index 006d22f74ea386..376275f6d48f0e 100644
--- a/css/properties/scroll-margin-bottom.json
+++ b/css/properties/scroll-margin-bottom.json
@@ -47,7 +47,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-inline-end.json b/css/properties/scroll-margin-inline-end.json
index 51824fe0737f49..97362e7e701297 100644
--- a/css/properties/scroll-margin-inline-end.json
+++ b/css/properties/scroll-margin-inline-end.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-inline-start.json b/css/properties/scroll-margin-inline-start.json
index cc458a78abdcc8..d78ced84243890 100644
--- a/css/properties/scroll-margin-inline-start.json
+++ b/css/properties/scroll-margin-inline-start.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-inline.json b/css/properties/scroll-margin-inline.json
index 07db54956d7297..1777feba572358 100644
--- a/css/properties/scroll-margin-inline.json
+++ b/css/properties/scroll-margin-inline.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-left.json b/css/properties/scroll-margin-left.json
index 5224aff0e72f4f..43f98276a29db8 100644
--- a/css/properties/scroll-margin-left.json
+++ b/css/properties/scroll-margin-left.json
@@ -47,7 +47,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-right.json b/css/properties/scroll-margin-right.json
index 6d66fa1192fe6e..ffd0b7a380f9e9 100644
--- a/css/properties/scroll-margin-right.json
+++ b/css/properties/scroll-margin-right.json
@@ -47,7 +47,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin-top.json b/css/properties/scroll-margin-top.json
index 1920180a5378b7..d72ccac91697b1 100644
--- a/css/properties/scroll-margin-top.json
+++ b/css/properties/scroll-margin-top.json
@@ -47,7 +47,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-margin.json b/css/properties/scroll-margin.json
index 75ab18229f11b4..09587d1a9cc8ba 100644
--- a/css/properties/scroll-margin.json
+++ b/css/properties/scroll-margin.json
@@ -55,7 +55,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-padding-block-end.json b/css/properties/scroll-padding-block-end.json
index 7c604b182b9644..bd9837b287ce62 100644
--- a/css/properties/scroll-padding-block-end.json
+++ b/css/properties/scroll-padding-block-end.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-block-start.json b/css/properties/scroll-padding-block-start.json
index 29d101e496e747..a1a06998e84a34 100644
--- a/css/properties/scroll-padding-block-start.json
+++ b/css/properties/scroll-padding-block-start.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-block.json b/css/properties/scroll-padding-block.json
index e5e8c31193cf82..a1361e1f3f4c8d 100644
--- a/css/properties/scroll-padding-block.json
+++ b/css/properties/scroll-padding-block.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-bottom.json b/css/properties/scroll-padding-bottom.json
index b60578f5663c53..0331d59973561a 100644
--- a/css/properties/scroll-padding-bottom.json
+++ b/css/properties/scroll-padding-bottom.json
@@ -37,7 +37,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-padding-inline-end.json b/css/properties/scroll-padding-inline-end.json
index 8fae2802a3cb44..308bf645e27e23 100644
--- a/css/properties/scroll-padding-inline-end.json
+++ b/css/properties/scroll-padding-inline-end.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-inline-start.json b/css/properties/scroll-padding-inline-start.json
index cbbd7b6024a95d..d334446df5529e 100644
--- a/css/properties/scroll-padding-inline-start.json
+++ b/css/properties/scroll-padding-inline-start.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-inline.json b/css/properties/scroll-padding-inline.json
index 89392e798d2d2d..07abcf84647aba 100644
--- a/css/properties/scroll-padding-inline.json
+++ b/css/properties/scroll-padding-inline.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-padding-left.json b/css/properties/scroll-padding-left.json
index 2f90b1d4f4691b..fbdc970d0affcf 100644
--- a/css/properties/scroll-padding-left.json
+++ b/css/properties/scroll-padding-left.json
@@ -37,7 +37,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-padding-right.json b/css/properties/scroll-padding-right.json
index 22f90ad6eb6c09..b96f3476841bcc 100644
--- a/css/properties/scroll-padding-right.json
+++ b/css/properties/scroll-padding-right.json
@@ -37,7 +37,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-padding-top.json b/css/properties/scroll-padding-top.json
index 63f9591106ef4a..f742c8704a6e2e 100644
--- a/css/properties/scroll-padding-top.json
+++ b/css/properties/scroll-padding-top.json
@@ -37,7 +37,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/scroll-padding.json b/css/properties/scroll-padding.json
index fa774ff58901fb..5a8e4b4095bc17 100644
--- a/css/properties/scroll-padding.json
+++ b/css/properties/scroll-padding.json
@@ -37,7 +37,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-snap-align.json b/css/properties/scroll-snap-align.json
index b3ce979fb22db4..3d250ec2b8de66 100644
--- a/css/properties/scroll-snap-align.json
+++ b/css/properties/scroll-snap-align.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -160,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-snap-stop.json b/css/properties/scroll-snap-stop.json
index a57bf87282af42..e5bb1c64242e8d 100644
--- a/css/properties/scroll-snap-stop.json
+++ b/css/properties/scroll-snap-stop.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-snap-type.json b/css/properties/scroll-snap-type.json
index a45ca89002fe1b..91e2ab44ca168a 100644
--- a/css/properties/scroll-snap-type.json
+++ b/css/properties/scroll-snap-type.json
@@ -70,7 +70,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -102,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -168,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +205,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -267,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scroll-timeline-axis.json b/css/properties/scroll-timeline-axis.json
index bdfc085a5b64a6..79e9fa1b1409d3 100644
--- a/css/properties/scroll-timeline-axis.json
+++ b/css/properties/scroll-timeline-axis.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -116,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -154,7 +157,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -192,7 +196,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/scroll-timeline-name.json b/css/properties/scroll-timeline-name.json
index ea2281e0dd43ef..b2646bb37babe6 100644
--- a/css/properties/scroll-timeline-name.json
+++ b/css/properties/scroll-timeline-name.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/scroll-timeline.json b/css/properties/scroll-timeline.json
index de40172dc39680..d8ea4ce5fbf60c 100644
--- a/css/properties/scroll-timeline.json
+++ b/css/properties/scroll-timeline.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/scrollbar-color.json b/css/properties/scrollbar-color.json
index 944c66618f54b5..0a825bc8e39e6d 100644
--- a/css/properties/scrollbar-color.json
+++ b/css/properties/scrollbar-color.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scrollbar-gutter.json b/css/properties/scrollbar-gutter.json
index 49c0f8c8fc6760..87e7980ba9af6f 100644
--- a/css/properties/scrollbar-gutter.json
+++ b/css/properties/scrollbar-gutter.json
@@ -25,18 +25,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "17",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "CSS scrollerbar-gutter property",
-                  "value_to_set": "true"
-                }
-              ]
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,11 +58,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,11 +92,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/scrollbar-width.json b/css/properties/scrollbar-width.json
index f488caf38a2e33..42ccb2f491e930 100644
--- a/css/properties/scrollbar-width.json
+++ b/css/properties/scrollbar-width.json
@@ -25,14 +25,15 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false,
+              "version_added": "preview",
               "impl_url": "https://webkit.org/b/231588"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,13 +61,14 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,13 +97,14 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -130,13 +133,14 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/shape-image-threshold.json b/css/properties/shape-image-threshold.json
index f7c33a249d791b..be59e5263c91e3 100644
--- a/css/properties/shape-image-threshold.json
+++ b/css/properties/shape-image-threshold.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/shape-margin.json b/css/properties/shape-margin.json
index e1e58c5ac5c026..e19f62a275ff9e 100644
--- a/css/properties/shape-margin.json
+++ b/css/properties/shape-margin.json
@@ -34,7 +34,8 @@
               "version_added": "10.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/shape-outside.json b/css/properties/shape-outside.json
index 375188b23c4a8f..1b73b11e3b66b9 100644
--- a/css/properties/shape-outside.json
+++ b/css/properties/shape-outside.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -196,7 +201,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -231,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -265,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/shape-rendering.json b/css/properties/shape-rendering.json
index f325d819b61f2e..45a3f37e2ff0d9 100644
--- a/css/properties/shape-rendering.json
+++ b/css/properties/shape-rendering.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/speak-as.json b/css/properties/speak-as.json
index 468bfcbc607b43..2cb8abfb41016c 100644
--- a/css/properties/speak-as.json
+++ b/css/properties/speak-as.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -157,7 +161,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -190,7 +195,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/speak.json b/css/properties/speak.json
index b41d5bc3fc5fc9..98cddea372860b 100644
--- a/css/properties/speak.json
+++ b/css/properties/speak.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stop-color.json b/css/properties/stop-color.json
index 3a531757262bfb..c5627c8d4800b5 100644
--- a/css/properties/stop-color.json
+++ b/css/properties/stop-color.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stop-opacity.json b/css/properties/stop-opacity.json
index 019218cf92c43c..4ea56deb8fee3b 100644
--- a/css/properties/stop-opacity.json
+++ b/css/properties/stop-opacity.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stroke-color.json b/css/properties/stroke-color.json
index c2e89bc89490de..7a019a6747eacd 100644
--- a/css/properties/stroke-color.json
+++ b/css/properties/stroke-color.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/stroke-dasharray.json b/css/properties/stroke-dasharray.json
index 2346121aab241e..6577e343255d6f 100644
--- a/css/properties/stroke-dasharray.json
+++ b/css/properties/stroke-dasharray.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-dasharray": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-dasharray",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-dasharray",
           "support": {
             "chrome": {
@@ -25,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/stroke-dashoffset.json b/css/properties/stroke-dashoffset.json
index 24b1f3b0ef0013..552098d015e7b7 100644
--- a/css/properties/stroke-dashoffset.json
+++ b/css/properties/stroke-dashoffset.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-dashoffset": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-dashoffset",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-dashoffset",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stroke-linecap.json b/css/properties/stroke-linecap.json
index c687f542d61e83..add43dc562d224 100644
--- a/css/properties/stroke-linecap.json
+++ b/css/properties/stroke-linecap.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-linecap": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-linecap",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-linecap",
           "support": {
             "chrome": {
@@ -25,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -123,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/stroke-linejoin.json b/css/properties/stroke-linejoin.json
index 50e728e0acd98a..ea78bb8649791d 100644
--- a/css/properties/stroke-linejoin.json
+++ b/css/properties/stroke-linejoin.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-linejoin": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-linejoin",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-linejoin",
           "support": {
             "chrome": {
@@ -25,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -123,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/stroke-miterlimit.json b/css/properties/stroke-miterlimit.json
index 4ebe9d38341d05..3893879fa43ce9 100644
--- a/css/properties/stroke-miterlimit.json
+++ b/css/properties/stroke-miterlimit.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-miterlimit": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-miterlimit",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-miterlimit",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stroke-opacity.json b/css/properties/stroke-opacity.json
index c908b627a9c8bf..329534fa67345e 100644
--- a/css/properties/stroke-opacity.json
+++ b/css/properties/stroke-opacity.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-opacity": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-opacity",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-opacity",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stroke-width.json b/css/properties/stroke-width.json
index 9640d7886c57c2..9989aa4abba138 100644
--- a/css/properties/stroke-width.json
+++ b/css/properties/stroke-width.json
@@ -3,6 +3,7 @@
     "properties": {
       "stroke-width": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke-width",
           "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-width",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/stroke.json b/css/properties/stroke.json
index fcb886db868598..764b79a393b6a6 100644
--- a/css/properties/stroke.json
+++ b/css/properties/stroke.json
@@ -3,7 +3,8 @@
     "properties": {
       "stroke": {
         "__compat": {
-          "spec_url": "https://drafts.fxtf.org/fill-stroke-3/#stroke-shorthand",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/stroke",
+          "spec_url": "https://svgwg.org/svg2-draft/painting.html#SpecifyingStrokePaint",
           "support": {
             "chrome": {
               "version_added": "≤80"
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/tab-size.json b/css/properties/tab-size.json
index a3a59c9dd91f77..76c4bc6a3d6310 100644
--- a/css/properties/tab-size.json
+++ b/css/properties/tab-size.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/tab-size",
           "spec_url": "https://drafts.csswg.org/css-text/#tab-size-property",
+          "tags": [
+            "web-features:tab-size"
+          ],
           "support": {
             "chrome": {
               "version_added": "21",
@@ -54,7 +57,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,6 +71,9 @@
             "description": "<code>&lt;length&gt;</code>",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/length",
             "spec_url": "https://drafts.csswg.org/css-values/#lengths",
+            "tags": [
+              "web-features:tab-size"
+            ],
             "support": {
               "chrome": {
                 "version_added": "42"
@@ -90,7 +97,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "56"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/table-layout.json b/css/properties/table-layout.json
index 5690c7baa9685a..f472ffa27d18c4 100644
--- a/css/properties/table-layout.json
+++ b/css/properties/table-layout.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1.5"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-align-last.json b/css/properties/text-align-last.json
index a1702bf8e4b723..ec2bc6217a2f66 100644
--- a/css/properties/text-align-last.json
+++ b/css/properties/text-align-last.json
@@ -40,7 +40,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-align.json b/css/properties/text-align.json
index 63fd1dacfc51a6..56443d0b2fc8a9 100644
--- a/css/properties/text-align.json
+++ b/css/properties/text-align.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +93,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -127,7 +129,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -220,7 +224,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -256,7 +261,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -314,7 +320,8 @@
               "webview_android": {
                 "prefix": "-webkit-",
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -349,7 +356,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-anchor.json b/css/properties/text-anchor.json
index 33aa6ec018f88f..9669b90adb1fea 100644
--- a/css/properties/text-anchor.json
+++ b/css/properties/text-anchor.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-combine-upright.json b/css/properties/text-combine-upright.json
index 013c880c1040c8..db2eaf6be86fd0 100644
--- a/css/properties/text-combine-upright.json
+++ b/css/properties/text-combine-upright.json
@@ -53,7 +53,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-decoration-color.json b/css/properties/text-decoration-color.json
index bbcdb57d330ee7..5df162dda6231c 100644
--- a/css/properties/text-decoration-color.json
+++ b/css/properties/text-decoration-color.json
@@ -39,7 +39,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-decoration-line.json b/css/properties/text-decoration-line.json
index 64fabdf339abf3..a45297a6671a1c 100644
--- a/css/properties/text-decoration-line.json
+++ b/css/properties/text-decoration-line.json
@@ -39,7 +39,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -110,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -143,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +248,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -275,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-decoration-skip-ink.json b/css/properties/text-decoration-skip-ink.json
index 7cd11ffd3b166d..381a2fe7e84ce0 100644
--- a/css/properties/text-decoration-skip-ink.json
+++ b/css/properties/text-decoration-skip-ink.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -96,7 +98,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-decoration-skip.json b/css/properties/text-decoration-skip.json
index 9bb7d811fa232c..5e17051bf2e0c6 100644
--- a/css/properties/text-decoration-skip.json
+++ b/css/properties/text-decoration-skip.json
@@ -44,7 +44,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -109,7 +111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/text-decoration-style.json b/css/properties/text-decoration-style.json
index 47cae464bd6fac..81abb20b68cf4f 100644
--- a/css/properties/text-decoration-style.json
+++ b/css/properties/text-decoration-style.json
@@ -39,7 +39,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-decoration-thickness.json b/css/properties/text-decoration-thickness.json
index a334e8c59cd1ad..4d738a0a36ce6a 100644
--- a/css/properties/text-decoration-thickness.json
+++ b/css/properties/text-decoration-thickness.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -132,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-decoration.json b/css/properties/text-decoration.json
index e3c33dfb8eac81..48bfd2b5f14102 100644
--- a/css/properties/text-decoration.json
+++ b/css/properties/text-decoration.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-emphasis-color.json b/css/properties/text-emphasis-color.json
index d1c024fd1005db..9a47ffb3b48ecf 100644
--- a/css/properties/text-emphasis-color.json
+++ b/css/properties/text-emphasis-color.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-emphasis-position.json b/css/properties/text-emphasis-position.json
index 2997fbd727fea5..1e7e7007191ce5 100644
--- a/css/properties/text-emphasis-position.json
+++ b/css/properties/text-emphasis-position.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-emphasis-style.json b/css/properties/text-emphasis-style.json
index eaa57106b961be..1c39b92081e11e 100644
--- a/css/properties/text-emphasis-style.json
+++ b/css/properties/text-emphasis-style.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,7 +173,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,7 +207,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +275,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-emphasis.json b/css/properties/text-emphasis.json
index ac0364e7263ced..2b3d798213772c 100644
--- a/css/properties/text-emphasis.json
+++ b/css/properties/text-emphasis.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-indent.json b/css/properties/text-indent.json
index 3e3f6e947919d6..6f39c4fc7fa6f7 100644
--- a/css/properties/text-indent.json
+++ b/css/properties/text-indent.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-justify.json b/css/properties/text-justify.json
index 532b7d04b7667a..adfa864e1dafb0 100644
--- a/css/properties/text-justify.json
+++ b/css/properties/text-justify.json
@@ -53,7 +53,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -85,7 +86,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -124,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -157,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -190,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/text-orientation.json b/css/properties/text-orientation.json
index ef9535415c3b3c..9e6b41d31dfaf6 100644
--- a/css/properties/text-orientation.json
+++ b/css/properties/text-orientation.json
@@ -38,7 +38,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,7 +117,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-overflow.json b/css/properties/text-overflow.json
index 5bd74f0c1e056e..a967307138faef 100644
--- a/css/properties/text-overflow.json
+++ b/css/properties/text-overflow.json
@@ -53,7 +53,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,7 +88,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -122,7 +124,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -155,7 +158,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -188,7 +192,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-rendering.json b/css/properties/text-rendering.json
index c790a1354be79c..b1106ab9ed9a8d 100644
--- a/css/properties/text-rendering.json
+++ b/css/properties/text-rendering.json
@@ -46,7 +46,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "From version 3 to 4.3, there is a serious bug where <code>text-rendering: optimizeLegibility</code> causes custom web fonts to not render. This was fixed in version 4.4."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,7 +84,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -120,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-shadow.json b/css/properties/text-shadow.json
index 7e2c4ed9924afc..ef71dbaf05c82d 100644
--- a/css/properties/text-shadow.json
+++ b/css/properties/text-shadow.json
@@ -52,7 +52,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/text-size-adjust.json b/css/properties/text-size-adjust.json
index 41996379198bfd..eb9aafae5234ef 100644
--- a/css/properties/text-size-adjust.json
+++ b/css/properties/text-size-adjust.json
@@ -47,7 +47,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -79,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -112,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -148,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/text-spacing-trim.json b/css/properties/text-spacing-trim.json
index dc5516594cdc98..0ad932c185921d 100644
--- a/css/properties/text-spacing-trim.json
+++ b/css/properties/text-spacing-trim.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -94,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -127,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -160,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/text-transform.json b/css/properties/text-transform.json
index 99f24cc6ca89ac..c682266f1f8ab1 100644
--- a/css/properties/text-transform.json
+++ b/css/properties/text-transform.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -173,7 +177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -208,7 +213,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -243,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -278,7 +285,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -311,7 +319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -346,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -381,7 +391,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -416,7 +427,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -455,7 +467,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-underline-offset.json b/css/properties/text-underline-offset.json
index 5056f59fe9b557..dea8f7c52b2618 100644
--- a/css/properties/text-underline-offset.json
+++ b/css/properties/text-underline-offset.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +94,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-underline-position.json b/css/properties/text-underline-position.json
index 848a12d95dde09..40039caa772098 100644
--- a/css/properties/text-underline-position.json
+++ b/css/properties/text-underline-position.json
@@ -34,7 +34,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -161,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-wrap-mode.json b/css/properties/text-wrap-mode.json
index 7afed3f031493d..16a5069a2f45ae 100644
--- a/css/properties/text-wrap-mode.json
+++ b/css/properties/text-wrap-mode.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/text-wrap-mode",
           "spec_url": "https://drafts.csswg.org/css-text-4/#text-wrap-mode",
+          "tags": [
+            "web-features:text-wrap-mode"
+          ],
           "support": {
             "chrome": {
               "version_added": false
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -89,7 +94,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-wrap-style.json b/css/properties/text-wrap-style.json
index 4544d78fe5420a..573ab7413493a4 100644
--- a/css/properties/text-wrap-style.json
+++ b/css/properties/text-wrap-style.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/text-wrap.json b/css/properties/text-wrap.json
index 24a7c5be68232d..2ebd477145a7ed 100644
--- a/css/properties/text-wrap.json
+++ b/css/properties/text-wrap.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/timeline-scope.json b/css/properties/timeline-scope.json
index 06d6181c194c7f..fd4055a9da09ce 100644
--- a/css/properties/timeline-scope.json
+++ b/css/properties/timeline-scope.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/top.json b/css/properties/top.json
index 4ac9a11f53507c..d685e12af7525e 100644
--- a/css/properties/top.json
+++ b/css/properties/top.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/touch-action.json b/css/properties/touch-action.json
index a71f66fd568103..9dc98b96b78ce9 100644
--- a/css/properties/touch-action.json
+++ b/css/properties/touch-action.json
@@ -42,7 +42,8 @@
               "version_added": "9.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,7 +87,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +199,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -228,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -261,7 +267,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -304,7 +311,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -347,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -388,7 +397,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transform-box.json b/css/properties/transform-box.json
index c86cf6e8413d74..bc7bdb94756743 100644
--- a/css/properties/transform-box.json
+++ b/css/properties/transform-box.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -157,7 +161,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -190,7 +195,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transform-origin.json b/css/properties/transform-origin.json
index 2ca34eff6931b9..caac7f1af48673 100644
--- a/css/properties/transform-origin.json
+++ b/css/properties/transform-origin.json
@@ -100,7 +100,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -134,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -204,7 +207,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -239,7 +243,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -276,7 +281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -313,7 +319,8 @@
                 "version_added": "3.2"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -348,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transform-style.json b/css/properties/transform-style.json
index 01fdbe366611d5..7d6971989586d4 100644
--- a/css/properties/transform-style.json
+++ b/css/properties/transform-style.json
@@ -76,7 +76,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/transform.json b/css/properties/transform.json
index a98d7346b6a17b..226b7326f618a9 100644
--- a/css/properties/transform.json
+++ b/css/properties/transform.json
@@ -126,7 +126,8 @@
                 "version_added": "2",
                 "notes": "Android 2.3 has a bug where input forms will \"jump\" when typing, if any container element has a <code>-webkit-transform</code>."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transition-behavior.json b/css/properties/transition-behavior.json
index b8f8fde61cd11e..b17845408e83a2 100644
--- a/css/properties/transition-behavior.json
+++ b/css/properties/transition-behavior.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/transition-delay.json b/css/properties/transition-delay.json
index 9001a2a8f86b54..a4e02ed682f2c3 100644
--- a/css/properties/transition-delay.json
+++ b/css/properties/transition-delay.json
@@ -105,7 +105,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/transition-duration.json b/css/properties/transition-duration.json
index 45aab504643843..4979f2d14315e6 100644
--- a/css/properties/transition-duration.json
+++ b/css/properties/transition-duration.json
@@ -97,7 +97,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/transition-property.json b/css/properties/transition-property.json
index cf0a7ba5c4e0b4..87ad9ac74b4986 100644
--- a/css/properties/transition-property.json
+++ b/css/properties/transition-property.json
@@ -89,7 +89,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +126,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -160,7 +162,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transition-timing-function.json b/css/properties/transition-timing-function.json
index b9c2cf440921df..12ac4d5e20044b 100644
--- a/css/properties/transition-timing-function.json
+++ b/css/properties/transition-timing-function.json
@@ -89,7 +89,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/transition.json b/css/properties/transition.json
index 0eb77023e2a7b9..b3c0e09f898b23 100644
--- a/css/properties/transition.json
+++ b/css/properties/transition.json
@@ -102,7 +102,8 @@
                 "prefix": "-webkit-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +173,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/translate.json b/css/properties/translate.json
index abb6f4f8e7eb13..22f24325fbc4c0 100644
--- a/css/properties/translate.json
+++ b/css/properties/translate.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/unicode-bidi.json b/css/properties/unicode-bidi.json
index 7cc1123bf61020..a2730887ce8dd9 100644
--- a/css/properties/unicode-bidi.json
+++ b/css/properties/unicode-bidi.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +184,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -227,7 +231,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +267,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -312,7 +318,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/user-modify.json b/css/properties/user-modify.json
index eb0893d8a95d0c..fa2016cc257e0b 100644
--- a/css/properties/user-modify.json
+++ b/css/properties/user-modify.json
@@ -49,7 +49,8 @@
             "webview_android": {
               "prefix": "-webkit-",
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,6 +87,9 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
+              },
+              "webview_ios": {
+                "version_added": false
               }
             },
             "status": {
diff --git a/css/properties/user-select.json b/css/properties/user-select.json
index dd24909e4f44d8..2649c6a524ebf1 100644
--- a/css/properties/user-select.json
+++ b/css/properties/user-select.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/user-select",
           "spec_url": "https://drafts.csswg.org/css-ui/#content-selection",
+          "tags": [
+            "web-features:user-select"
+          ],
           "support": {
             "chrome": [
               {
@@ -67,7 +70,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,6 +81,9 @@
         },
         "all": {
           "__compat": {
+            "tags": [
+              "web-features:user-select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "53"
@@ -98,7 +105,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -109,6 +119,9 @@
         },
         "auto": {
           "__compat": {
+            "tags": [
+              "web-features:user-select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -134,44 +147,10 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
-            },
-            "status": {
-              "experimental": false,
-              "standard_track": true,
-              "deprecated": false
-            }
-          }
-        },
-        "contain": {
-          "__compat": {
-            "support": {
-              "chrome": {
+              "webview_android": "mirror",
+              "webview_ios": {
                 "version_added": false
-              },
-              "chrome_android": "mirror",
-              "edge": {
-                "alternative_name": "element",
-                "version_added": "12",
-                "version_removed": "79"
-              },
-              "firefox": {
-                "version_added": false
-              },
-              "firefox_android": "mirror",
-              "ie": {
-                "alternative_name": "element",
-                "version_added": "10"
-              },
-              "oculus": "mirror",
-              "opera": "mirror",
-              "opera_android": "mirror",
-              "safari": {
-                "version_added": false
-              },
-              "safari_ios": "mirror",
-              "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              }
             },
             "status": {
               "experimental": false,
@@ -182,6 +161,9 @@
         },
         "none": {
           "__compat": {
+            "tags": [
+              "web-features:user-select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -214,7 +196,10 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -225,6 +210,9 @@
         },
         "text": {
           "__compat": {
+            "tags": [
+              "web-features:user-select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -250,7 +238,10 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/vector-effect.json b/css/properties/vector-effect.json
index 1c3fed11368b05..154f60a19b0a57 100644
--- a/css/properties/vector-effect.json
+++ b/css/properties/vector-effect.json
@@ -3,6 +3,7 @@
     "properties": {
       "vector-effect": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/vector-effect",
           "spec_url": "https://svgwg.org/svg2-draft/coords.html#VectorEffectProperty",
           "support": {
             "chrome": {
@@ -27,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/vertical-align.json b/css/properties/vertical-align.json
index 69d7ba2291185e..006ea4575eac9a 100644
--- a/css/properties/vertical-align.json
+++ b/css/properties/vertical-align.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,7 +173,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -204,7 +209,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -239,7 +245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -274,7 +281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -309,7 +317,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/view-timeline-axis.json b/css/properties/view-timeline-axis.json
index c0b5ecaba0e9d3..6aaf101749017d 100644
--- a/css/properties/view-timeline-axis.json
+++ b/css/properties/view-timeline-axis.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -75,7 +76,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -113,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -151,7 +154,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -189,7 +193,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/view-timeline-inset.json b/css/properties/view-timeline-inset.json
index 75a2d65f7a60a5..885366bb586b1f 100644
--- a/css/properties/view-timeline-inset.json
+++ b/css/properties/view-timeline-inset.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/view-timeline-name.json b/css/properties/view-timeline-name.json
index 56c5b9c33c326d..78c94fe5dfe191 100644
--- a/css/properties/view-timeline-name.json
+++ b/css/properties/view-timeline-name.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/view-timeline.json b/css/properties/view-timeline.json
index a07192aed4473f..20ebb28db55a70 100644
--- a/css/properties/view-timeline.json
+++ b/css/properties/view-timeline.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/properties/view-transition-class.json b/css/properties/view-transition-class.json
index d613cb8cb1544e..16f2ba5420ada6 100644
--- a/css/properties/view-transition-class.json
+++ b/css/properties/view-transition-class.json
@@ -21,11 +21,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -53,11 +54,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/properties/view-transition-name.json b/css/properties/view-transition-name.json
index 00142f9915e6bd..9cc4cb66f833da 100644
--- a/css/properties/view-transition-name.json
+++ b/css/properties/view-transition-name.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/visibility.json b/css/properties/visibility.json
index 0839cf3cb75886..a5b6f30eb2ba35 100644
--- a/css/properties/visibility.json
+++ b/css/properties/visibility.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,7 +96,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -130,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +168,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/white-space-collapse.json b/css/properties/white-space-collapse.json
index 2ba6dc708eebd5..f38dc36b02c8ba 100644
--- a/css/properties/white-space-collapse.json
+++ b/css/properties/white-space-collapse.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/white-space-collapse",
           "spec_url": "https://drafts.csswg.org/css-text-4/#white-space-collapsing",
+          "tags": [
+            "web-features:white-space-collapse"
+          ],
           "support": {
             "chrome": {
               "version_added": "114"
@@ -26,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -37,6 +41,9 @@
         "break-spaces": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text-4/#valdef-white-space-collapse-break-spaces",
+            "tags": [
+              "web-features:white-space-collapse"
+            ],
             "support": {
               "chrome": {
                 "version_added": "114"
@@ -58,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -70,6 +78,9 @@
         "collapse": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text-4/#valdef-white-space-collapse-collapse",
+            "tags": [
+              "web-features:white-space-collapse"
+            ],
             "support": {
               "chrome": {
                 "version_added": "114"
@@ -91,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,6 +115,9 @@
         "preserve": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text-4/#valdef-white-space-collapse-preserve",
+            "tags": [
+              "web-features:white-space-collapse"
+            ],
             "support": {
               "chrome": {
                 "version_added": "114"
@@ -124,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,6 +152,9 @@
         "preserve-breaks": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text-4/#valdef-white-space-collapse-preserve-breaks",
+            "tags": [
+              "web-features:white-space-collapse"
+            ],
             "support": {
               "chrome": {
                 "version_added": "114"
@@ -157,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/white-space.json b/css/properties/white-space.json
index eb72a8cd2f6807..58f348cebdcb57 100644
--- a/css/properties/white-space.json
+++ b/css/properties/white-space.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/white-space",
           "spec_url": "https://drafts.csswg.org/css-text/#white-space-property",
+          "tags": [
+            "web-features:white-space"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -43,6 +47,9 @@
         "break-spaces": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-break-spaces",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "76"
@@ -66,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -78,6 +86,9 @@
         "normal": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-normal",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -101,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,6 +125,9 @@
         "nowrap": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-nowrap",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -140,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,6 +168,9 @@
         "pre": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-pre",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -179,7 +198,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -191,6 +211,9 @@
         "pre-line": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-pre-line",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -220,7 +243,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,6 +256,9 @@
         "pre-wrap": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-text/#valdef-white-space-pre-wrap",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -269,7 +296,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -281,6 +309,9 @@
         "shorthand_values": {
           "__compat": {
             "description": "Accepts shorthand values",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "114",
@@ -304,7 +335,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -316,6 +348,9 @@
         "svg_elements": {
           "__compat": {
             "description": "On SVG elements",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": false
@@ -340,7 +375,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -352,6 +388,9 @@
         "textarea_support": {
           "__compat": {
             "description": "Support on <code>&lt;textarea&gt;</code>",
+            "tags": [
+              "web-features:white-space"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -379,7 +418,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/widows.json b/css/properties/widows.json
index 2e06b3b3f5c257..c8a94988b2e9e1 100644
--- a/css/properties/widows.json
+++ b/css/properties/widows.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/width.json b/css/properties/width.json
index b2f991ed3601b7..572b55287b0a8c 100644
--- a/css/properties/width.json
+++ b/css/properties/width.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +170,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -241,7 +246,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +302,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -348,7 +355,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -387,10 +395,11 @@
                 "alternative_name": "-webkit-fill-available",
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
diff --git a/css/properties/will-change.json b/css/properties/will-change.json
index 617595143d0897..314dc99ade91ad 100644
--- a/css/properties/will-change.json
+++ b/css/properties/will-change.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/word-break.json b/css/properties/word-break.json
index cbafba7c9de342..305386c372668f 100644
--- a/css/properties/word-break.json
+++ b/css/properties/word-break.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -104,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +178,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/word-spacing.json b/css/properties/word-spacing.json
index 403e41cde8f2c0..da4ee239bf7c8c 100644
--- a/css/properties/word-spacing.json
+++ b/css/properties/word-spacing.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/word-wrap.json b/css/properties/word-wrap.json
index d28aa221eb613d..2a62611f5fc3da 100644
--- a/css/properties/word-wrap.json
+++ b/css/properties/word-wrap.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/writing-mode.json b/css/properties/writing-mode.json
index 379c4b38f6e3cb..c72dd0be0708ef 100644
--- a/css/properties/writing-mode.json
+++ b/css/properties/writing-mode.json
@@ -63,7 +63,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -196,7 +200,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +235,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +268,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -294,7 +301,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -328,7 +336,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -362,7 +371,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -415,7 +425,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -447,7 +458,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -479,7 +491,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/x.json b/css/properties/x.json
index 084db7a0525563..b2226a1f5bf403 100644
--- a/css/properties/x.json
+++ b/css/properties/x.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/y.json b/css/properties/y.json
index cf43cbd63d7a46..be518fb8c3adc3 100644
--- a/css/properties/y.json
+++ b/css/properties/y.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/properties/z-index.json b/css/properties/z-index.json
index 974c8bd7e7218e..5407cd74b3f23e 100644
--- a/css/properties/z-index.json
+++ b/css/properties/z-index.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/z-index",
           "spec_url": "https://drafts.csswg.org/css2/#z-index",
+          "tags": [
+            "web-features:z-index"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -30,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -41,6 +45,9 @@
         "auto": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css2/#valdef-z-index-auto",
+            "tags": [
+              "web-features:z-index"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -64,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -76,6 +84,9 @@
         "negative_values": {
           "__compat": {
             "description": "Negative values",
+            "tags": [
+              "web-features:z-index"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -101,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/properties/zoom.json b/css/properties/zoom.json
index 2c6e6f8ecfb108..c49468d9660a0e 100644
--- a/css/properties/zoom.json
+++ b/css/properties/zoom.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/zoom",
           "spec_url": "https://drafts.csswg.org/css-viewport/#zoom-property",
+          "tags": [
+            "web-features:zoom"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -30,7 +33,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +70,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/-moz-broken.json b/css/selectors/-moz-broken.json
index 571db03b4cb73c..633525fd8f9c81 100644
--- a/css/selectors/-moz-broken.json
+++ b/css/selectors/-moz-broken.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-color-swatch.json b/css/selectors/-moz-color-swatch.json
index c70fcbeefddb8c..f362b41c18b6ba 100644
--- a/css/selectors/-moz-color-swatch.json
+++ b/css/selectors/-moz-color-swatch.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-first-node.json b/css/selectors/-moz-first-node.json
index 78612e564e8632..9f3b579191e456 100644
--- a/css/selectors/-moz-first-node.json
+++ b/css/selectors/-moz-first-node.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-focus-inner.json b/css/selectors/-moz-focus-inner.json
index 99b705425fcb36..afac118f389c0b 100644
--- a/css/selectors/-moz-focus-inner.json
+++ b/css/selectors/-moz-focus-inner.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-last-node.json b/css/selectors/-moz-last-node.json
index d07d02d2bdc20d..9f06e32176c519 100644
--- a/css/selectors/-moz-last-node.json
+++ b/css/selectors/-moz-last-node.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-list-bullet.json b/css/selectors/-moz-list-bullet.json
index e45a5500d57fbc..7ec66e1fbe5870 100644
--- a/css/selectors/-moz-list-bullet.json
+++ b/css/selectors/-moz-list-bullet.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-list-number.json b/css/selectors/-moz-list-number.json
index bd66dee9c679b9..afe26ca63a2088 100644
--- a/css/selectors/-moz-list-number.json
+++ b/css/selectors/-moz-list-number.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-only-whitespace.json b/css/selectors/-moz-only-whitespace.json
index 6c2e94a7a75e9f..1e1c7f606a8dcb 100644
--- a/css/selectors/-moz-only-whitespace.json
+++ b/css/selectors/-moz-only-whitespace.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-progress-bar.json b/css/selectors/-moz-progress-bar.json
index a0b0041843dff6..e8ef2dbd7a4ba1 100644
--- a/css/selectors/-moz-progress-bar.json
+++ b/css/selectors/-moz-progress-bar.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-moz-range-progress.json b/css/selectors/-moz-range-progress.json
index 3e2e09f1e3a234..ea5a0b504e67fe 100644
--- a/css/selectors/-moz-range-progress.json
+++ b/css/selectors/-moz-range-progress.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-range-thumb.json b/css/selectors/-moz-range-thumb.json
index 483f3b60ccff94..4dd9be92798db1 100644
--- a/css/selectors/-moz-range-thumb.json
+++ b/css/selectors/-moz-range-thumb.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-range-track.json b/css/selectors/-moz-range-track.json
index e9320fb0c2d2cf..ffd39825cd1434 100644
--- a/css/selectors/-moz-range-track.json
+++ b/css/selectors/-moz-range-track.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-submit-invalid.json b/css/selectors/-moz-submit-invalid.json
index e7ad9ac956fca3..4a50ab3c3b17bb 100644
--- a/css/selectors/-moz-submit-invalid.json
+++ b/css/selectors/-moz-submit-invalid.json
@@ -44,7 +44,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-moz-window-inactive.json b/css/selectors/-moz-window-inactive.json
index 8b5009a1e6c20d..1571cdaaea0785 100644
--- a/css/selectors/-moz-window-inactive.json
+++ b/css/selectors/-moz-window-inactive.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-inner-spin-button.json b/css/selectors/-webkit-inner-spin-button.json
index f22aa6ff70059d..62024ea4ee42b7 100644
--- a/css/selectors/-webkit-inner-spin-button.json
+++ b/css/selectors/-webkit-inner-spin-button.json
@@ -26,7 +26,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-meter-bar.json b/css/selectors/-webkit-meter-bar.json
index 36a2471058f754..3363e60049cde5 100644
--- a/css/selectors/-webkit-meter-bar.json
+++ b/css/selectors/-webkit-meter-bar.json
@@ -28,12 +28,15 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
             "experimental": false,
             "standard_track": false,
-            "deprecated": false
+            "deprecated": true
           }
         }
       }
diff --git a/css/selectors/-webkit-meter-even-less-good-value.json b/css/selectors/-webkit-meter-even-less-good-value.json
index 6c4a6d32293cf7..997162ee1c87aa 100644
--- a/css/selectors/-webkit-meter-even-less-good-value.json
+++ b/css/selectors/-webkit-meter-even-less-good-value.json
@@ -28,6 +28,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
diff --git a/css/selectors/-webkit-meter-inner-element.json b/css/selectors/-webkit-meter-inner-element.json
index f61cd8231cd9ef..7fb8a22e0b1697 100644
--- a/css/selectors/-webkit-meter-inner-element.json
+++ b/css/selectors/-webkit-meter-inner-element.json
@@ -26,7 +26,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-meter-optimum-value.json b/css/selectors/-webkit-meter-optimum-value.json
index 0a3304581fa3d9..e2b396de1c0b00 100644
--- a/css/selectors/-webkit-meter-optimum-value.json
+++ b/css/selectors/-webkit-meter-optimum-value.json
@@ -28,6 +28,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
diff --git a/css/selectors/-webkit-meter-suboptimum-value.json b/css/selectors/-webkit-meter-suboptimum-value.json
index be43487c800712..c7a044f36b69a7 100644
--- a/css/selectors/-webkit-meter-suboptimum-value.json
+++ b/css/selectors/-webkit-meter-suboptimum-value.json
@@ -28,6 +28,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
diff --git a/css/selectors/-webkit-progress-bar.json b/css/selectors/-webkit-progress-bar.json
index 1ccb684d6560cf..a6c5ebe0931c20 100644
--- a/css/selectors/-webkit-progress-bar.json
+++ b/css/selectors/-webkit-progress-bar.json
@@ -26,7 +26,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-progress-inner-element.json b/css/selectors/-webkit-progress-inner-element.json
index 5d5d278f86ddca..f9d7902f7e50c3 100644
--- a/css/selectors/-webkit-progress-inner-element.json
+++ b/css/selectors/-webkit-progress-inner-element.json
@@ -26,7 +26,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-progress-value.json b/css/selectors/-webkit-progress-value.json
index 91920b74da3bd5..a1db4dce4f513b 100644
--- a/css/selectors/-webkit-progress-value.json
+++ b/css/selectors/-webkit-progress-value.json
@@ -26,7 +26,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-resizer.json b/css/selectors/-webkit-resizer.json
index d468ae62a4d313..8f5d650563c8a2 100644
--- a/css/selectors/-webkit-resizer.json
+++ b/css/selectors/-webkit-resizer.json
@@ -29,7 +29,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar-button.json b/css/selectors/-webkit-scrollbar-button.json
index 2dd3fef3ffecd9..e8044869aaf327 100644
--- a/css/selectors/-webkit-scrollbar-button.json
+++ b/css/selectors/-webkit-scrollbar-button.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar-corner.json b/css/selectors/-webkit-scrollbar-corner.json
index 4af9a78a275d45..0b4775eb52ed7e 100644
--- a/css/selectors/-webkit-scrollbar-corner.json
+++ b/css/selectors/-webkit-scrollbar-corner.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar-thumb.json b/css/selectors/-webkit-scrollbar-thumb.json
index 6913503c5d131a..457381358c9e75 100644
--- a/css/selectors/-webkit-scrollbar-thumb.json
+++ b/css/selectors/-webkit-scrollbar-thumb.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar-track-piece.json b/css/selectors/-webkit-scrollbar-track-piece.json
index acaa932992f1af..2e98b0d5b740d8 100644
--- a/css/selectors/-webkit-scrollbar-track-piece.json
+++ b/css/selectors/-webkit-scrollbar-track-piece.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar-track.json b/css/selectors/-webkit-scrollbar-track.json
index 93c5d53130b625..edb66f4b47f35c 100644
--- a/css/selectors/-webkit-scrollbar-track.json
+++ b/css/selectors/-webkit-scrollbar-track.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-scrollbar.json b/css/selectors/-webkit-scrollbar.json
index 43193a4d96e583..57949ef3ea5146 100644
--- a/css/selectors/-webkit-scrollbar.json
+++ b/css/selectors/-webkit-scrollbar.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/-webkit-search-cancel-button.json b/css/selectors/-webkit-search-cancel-button.json
index fae29a9b17e494..417d07eae301c2 100644
--- a/css/selectors/-webkit-search-cancel-button.json
+++ b/css/selectors/-webkit-search-cancel-button.json
@@ -30,6 +30,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
diff --git a/css/selectors/-webkit-search-results-button.json b/css/selectors/-webkit-search-results-button.json
index 08829e9e0eb6cf..630e829a977cc1 100644
--- a/css/selectors/-webkit-search-results-button.json
+++ b/css/selectors/-webkit-search-results-button.json
@@ -30,6 +30,9 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
+            },
+            "webview_ios": {
+              "version_added": false
             }
           },
           "status": {
diff --git a/css/selectors/-webkit-slider-runnable-track.json b/css/selectors/-webkit-slider-runnable-track.json
index 841a5b63b43bae..a0e7421acb7a35 100644
--- a/css/selectors/-webkit-slider-runnable-track.json
+++ b/css/selectors/-webkit-slider-runnable-track.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/-webkit-slider-thumb.json b/css/selectors/-webkit-slider-thumb.json
index 1abc9794901724..7d48015e90cac5 100644
--- a/css/selectors/-webkit-slider-thumb.json
+++ b/css/selectors/-webkit-slider-thumb.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/active-view-transition-type.json b/css/selectors/active-view-transition-type.json
index 750b9f77315063..d3196a9c947136 100644
--- a/css/selectors/active-view-transition-type.json
+++ b/css/selectors/active-view-transition-type.json
@@ -23,11 +23,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/active-view-transition.json b/css/selectors/active-view-transition.json
index 5ec81d1e1d2c36..9780be327b5cee 100644
--- a/css/selectors/active-view-transition.json
+++ b/css/selectors/active-view-transition.json
@@ -23,14 +23,15 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false
+              "version_added": "18"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/css/selectors/active.json b/css/selectors/active.json
index 498c614d898ec0..65739702a06a3b 100644
--- a/css/selectors/active.json
+++ b/css/selectors/active.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
                 "notes": "By default, Safari on iOS does not use the <a href='https://developer.mozilla.org/docs/Web/CSS/:active'><code>:active</code></a> state unless there is a <a href='https://developer.mozilla.org/docs/Web/Reference/Events/touchstart'><code>touchstart</code></a> event handler on the relevant element or on the <a href='https://developer.mozilla.org/docs/Web/HTML/Element/body'><code>&lt;body&gt;</code></a> element."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/after.json b/css/selectors/after.json
index 67a3bcb6f93055..9363c3a6c4e204 100644
--- a/css/selectors/after.json
+++ b/css/selectors/after.json
@@ -87,7 +87,8 @@
                 "alternative_name": ":after",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -121,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/any-link.json b/css/selectors/any-link.json
index f806afd8c9337a..9846d9dda4421e 100644
--- a/css/selectors/any-link.json
+++ b/css/selectors/any-link.json
@@ -67,7 +67,8 @@
                 "prefix": "-webkit-",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -95,12 +96,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false,
-                "notes": "Safari currently matches <code>&lt;link&gt;</code> elements with link pseudo-classes. See <a href='https://webkit.org/b/220740'>bug 220740</a>."
+                "version_added": "15"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/attribute.json b/css/selectors/attribute.json
index 45dfbf3ebf370c..12419afeef0fca 100644
--- a/css/selectors/attribute.json
+++ b/css/selectors/attribute.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/autofill.json b/css/selectors/autofill.json
index 1ce8541a18dc8e..da31f73b929a2e 100644
--- a/css/selectors/autofill.json
+++ b/css/selectors/autofill.json
@@ -56,7 +56,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/backdrop.json b/css/selectors/backdrop.json
index df9ee0e8a1469d..863a74c13bcb2a 100644
--- a/css/selectors/backdrop.json
+++ b/css/selectors/backdrop.json
@@ -43,7 +43,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -116,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -188,7 +192,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/before.json b/css/selectors/before.json
index 387223def50fba..cfdc2ea4ca1c4e 100644
--- a/css/selectors/before.json
+++ b/css/selectors/before.json
@@ -104,7 +104,8 @@
                 "alternative_name": ":before",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -138,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/blank.json b/css/selectors/blank.json
index 2db10fd07e001a..b341446f34b0fa 100644
--- a/css/selectors/blank.json
+++ b/css/selectors/blank.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/buffering.json b/css/selectors/buffering.json
index 9c96b11f3fad32..74a59550da336c 100644
--- a/css/selectors/buffering.json
+++ b/css/selectors/buffering.json
@@ -4,7 +4,10 @@
       "buffering": {
         "__compat": {
           "description": "<code>:buffering</code>",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-buffering",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-buffering",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-buffering"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/checked.json b/css/selectors/checked.json
index 012940cf57b0d7..0f22a698632d63 100644
--- a/css/selectors/checked.json
+++ b/css/selectors/checked.json
@@ -51,7 +51,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/child.json b/css/selectors/child.json
index b0889b74cd71a4..cab289c6033e14 100644
--- a/css/selectors/child.json
+++ b/css/selectors/child.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/class.json b/css/selectors/class.json
index 639d2b3d54f2a6..dfd8956aec3dbf 100644
--- a/css/selectors/class.json
+++ b/css/selectors/class.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/closed.json b/css/selectors/closed.json
index d11352b5a98a38..1e080a887101d3 100644
--- a/css/selectors/closed.json
+++ b/css/selectors/closed.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/column.json b/css/selectors/column.json
index 357b27d25c514b..5af257aa892d37 100644
--- a/css/selectors/column.json
+++ b/css/selectors/column.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/cue.json b/css/selectors/cue.json
index 312b61bd224cc2..ba402ba1e8d203 100644
--- a/css/selectors/cue.json
+++ b/css/selectors/cue.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/default.json b/css/selectors/default.json
index f5410394d9ca82..b6bb9e75fcc062 100644
--- a/css/selectors/default.json
+++ b/css/selectors/default.json
@@ -41,7 +41,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/defined.json b/css/selectors/defined.json
index 580cbf11d6b8d5..9d492400ea9395 100644
--- a/css/selectors/defined.json
+++ b/css/selectors/defined.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/descendant.json b/css/selectors/descendant.json
index 80174cf02163ad..b0c306cd966788 100644
--- a/css/selectors/descendant.json
+++ b/css/selectors/descendant.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/dir.json b/css/selectors/dir.json
index c9d51ea1ceb90d..233f2ad75e96d8 100644
--- a/css/selectors/dir.json
+++ b/css/selectors/dir.json
@@ -40,7 +40,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/disabled.json b/css/selectors/disabled.json
index 4a1ccafb7f933a..92e9805fc6f7c8 100644
--- a/css/selectors/disabled.json
+++ b/css/selectors/disabled.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/empty.json b/css/selectors/empty.json
index ad505c5a3b0a18..d30ef2535e4c30 100644
--- a/css/selectors/empty.json
+++ b/css/selectors/empty.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/enabled.json b/css/selectors/enabled.json
index 0c1e1a4c91e071..a206c117319e73 100644
--- a/css/selectors/enabled.json
+++ b/css/selectors/enabled.json
@@ -38,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/file-selector-button.json b/css/selectors/file-selector-button.json
index 3b20e2a0cfbfd8..1461c3196a206d 100644
--- a/css/selectors/file-selector-button.json
+++ b/css/selectors/file-selector-button.json
@@ -61,7 +61,8 @@
               }
             ],
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/first-child.json b/css/selectors/first-child.json
index 5ddc8cca24dfe7..9c89526194da0c 100644
--- a/css/selectors/first-child.json
+++ b/css/selectors/first-child.json
@@ -41,7 +41,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/first-letter.json b/css/selectors/first-letter.json
index 7bf531b57ffa5f..76fe6b210da0ef 100644
--- a/css/selectors/first-letter.json
+++ b/css/selectors/first-letter.json
@@ -83,7 +83,8 @@
                 "alternative_name": ":first-letter",
                 "version_added": "37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -115,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,7 +150,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/first-line.json b/css/selectors/first-line.json
index 6fd5a5d92cd535..251b9e84458daa 100644
--- a/css/selectors/first-line.json
+++ b/css/selectors/first-line.json
@@ -93,7 +93,8 @@
                 "version_added": "≤37",
                 "notes": "Before WebView 62, the <a href='https://developer.mozilla.org/docs/Web/CSS/text-transform'><code>text-transform</code></a> property does not work on <code>::first-line</code> pseudo-elements. See <a href='https://crbug.com/129669'>bug 129669</a>."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -125,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/first-of-type.json b/css/selectors/first-of-type.json
index 27260c0642bc2f..364d63a232739b 100644
--- a/css/selectors/first-of-type.json
+++ b/css/selectors/first-of-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/first.json b/css/selectors/first.json
index 0082b8bfab85a1..7598a9773ea807 100644
--- a/css/selectors/first.json
+++ b/css/selectors/first.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/focus-visible.json b/css/selectors/focus-visible.json
index da9ed09523c44e..8cbad7747a39d5 100644
--- a/css/selectors/focus-visible.json
+++ b/css/selectors/focus-visible.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/focus-within.json b/css/selectors/focus-within.json
index c2b8bbff8f2059..99365d6e370a8b 100644
--- a/css/selectors/focus-within.json
+++ b/css/selectors/focus-within.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/focus.json b/css/selectors/focus.json
index ac909aceb3ee54..9acb7a678f1dc4 100644
--- a/css/selectors/focus.json
+++ b/css/selectors/focus.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/fullscreen.json b/css/selectors/fullscreen.json
index 4b1fe9f0848e8d..9aab996896031d 100644
--- a/css/selectors/fullscreen.json
+++ b/css/selectors/fullscreen.json
@@ -74,7 +74,8 @@
                 "alternative_name": ":-webkit-full-screen",
                 "version_added": "37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -112,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/future.json b/css/selectors/future.json
index 0f71827fbcfccb..f5846a20e7f21d 100644
--- a/css/selectors/future.json
+++ b/css/selectors/future.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/grammar-error.json b/css/selectors/grammar-error.json
index aed3604cf8a4b1..e56bea702b7351 100644
--- a/css/selectors/grammar-error.json
+++ b/css/selectors/grammar-error.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/has.json b/css/selectors/has.json
index 95b5868e2527e2..64c37432f8ec0e 100644
--- a/css/selectors/has.json
+++ b/css/selectors/has.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/highlight.json b/css/selectors/highlight.json
index 6cf852f60fcbcc..62b4c8dc2bead6 100644
--- a/css/selectors/highlight.json
+++ b/css/selectors/highlight.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/host-context.json b/css/selectors/host-context.json
index ee777cd9baa412..c54d3b3cf15b4f 100644
--- a/css/selectors/host-context.json
+++ b/css/selectors/host-context.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/host.json b/css/selectors/host.json
index 7e227daac412a9..b092c3bf05f176 100644
--- a/css/selectors/host.json
+++ b/css/selectors/host.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/hostfunction.json b/css/selectors/hostfunction.json
index dfe96bc7018cf4..1ab0207158a480 100644
--- a/css/selectors/hostfunction.json
+++ b/css/selectors/hostfunction.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/hover.json b/css/selectors/hover.json
index aad75578b23a11..6eec9d635e4a2c 100644
--- a/css/selectors/hover.json
+++ b/css/selectors/hover.json
@@ -39,7 +39,8 @@
               "notes": "As of Safari for iOS 7.1.2, tapping a <a href='https://developer.mozilla.org/docs/Web/Events/click#Safari_Mobile'>clickable element</a> causes the element to enter the <code>:hover</code> state. The element will remain in the <code>:hover</code> state until a different element has entered the <code>:hover</code> state."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -125,7 +127,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/id.json b/css/selectors/id.json
index 5057ddf6aa0606..a3af3d1704d93d 100644
--- a/css/selectors/id.json
+++ b/css/selectors/id.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/in-range.json b/css/selectors/in-range.json
index 02a60bdd93eafb..65937a7bb2c72d 100644
--- a/css/selectors/in-range.json
+++ b/css/selectors/in-range.json
@@ -49,7 +49,8 @@
             "webview_android": {
               "version_added": "2.2",
               "notes": "Before version 52, <code>:in-range</code> matched disabled and read-only inputs (see <a href='https://crbug.com/602568'>bug 602568</a>). In version 52, it was changed to only match enabled read-write inputs."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/indeterminate.json b/css/selectors/indeterminate.json
index 99fba6b219d976..ae7c5b76a8b33b 100644
--- a/css/selectors/indeterminate.json
+++ b/css/selectors/indeterminate.json
@@ -43,7 +43,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -88,7 +89,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +130,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -164,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/invalid.json b/css/selectors/invalid.json
index a23fb689accf10..6a8c304182981c 100644
--- a/css/selectors/invalid.json
+++ b/css/selectors/invalid.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/is.json b/css/selectors/is.json
index fb67d972d80c9b..4ad1bb598244b1 100644
--- a/css/selectors/is.json
+++ b/css/selectors/is.json
@@ -93,7 +93,8 @@
                 "version_added": "≤37",
                 "notes": "Doesn't support combinators."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -129,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/lang.json b/css/selectors/lang.json
index 61e9d64ae63976..7b9eb3aec6a429 100644
--- a/css/selectors/lang.json
+++ b/css/selectors/lang.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/last-child.json b/css/selectors/last-child.json
index 8ae39c2f4961e3..3b672635f562bd 100644
--- a/css/selectors/last-child.json
+++ b/css/selectors/last-child.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/last-of-type.json b/css/selectors/last-of-type.json
index ce525dd45ff6e2..6fef51148eda6a 100644
--- a/css/selectors/last-of-type.json
+++ b/css/selectors/last-of-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/left.json b/css/selectors/left.json
index cf124960d14d85..42b89ac0f2a69e 100644
--- a/css/selectors/left.json
+++ b/css/selectors/left.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/link.json b/css/selectors/link.json
index 9142bbaff85a42..54d0778a7c4b3f 100644
--- a/css/selectors/link.json
+++ b/css/selectors/link.json
@@ -38,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1.5"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "1.5"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/list.json b/css/selectors/list.json
index 127d0351eefc64..f3d598007697c3 100644
--- a/css/selectors/list.json
+++ b/css/selectors/list.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/marker.json b/css/selectors/marker.json
index 9448b4bc09aeac..966d152cb7e976 100644
--- a/css/selectors/marker.json
+++ b/css/selectors/marker.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/modal.json b/css/selectors/modal.json
index 621df5ce84bc48..e8324f56ef74b1 100644
--- a/css/selectors/modal.json
+++ b/css/selectors/modal.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/muted.json b/css/selectors/muted.json
index ef5639abbac10b..41fc081cb0393d 100644
--- a/css/selectors/muted.json
+++ b/css/selectors/muted.json
@@ -4,7 +4,10 @@
       "muted": {
         "__compat": {
           "description": "<code>:muted</code>",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-muted",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-muted",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-muted"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/namespace.json b/css/selectors/namespace.json
index b0bf2a463a9c93..c6787ead3eda3a 100644
--- a/css/selectors/namespace.json
+++ b/css/selectors/namespace.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/nesting.json b/css/selectors/nesting.json
index 1fdf10a11aad9b..17ce6e754c85bc 100644
--- a/css/selectors/nesting.json
+++ b/css/selectors/nesting.json
@@ -44,7 +44,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/next-sibling.json b/css/selectors/next-sibling.json
index bef7dfb208408f..ff958327853b4f 100644
--- a/css/selectors/next-sibling.json
+++ b/css/selectors/next-sibling.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/not.json b/css/selectors/not.json
index c4e0b66f341421..210c3bb65edc94 100644
--- a/css/selectors/not.json
+++ b/css/selectors/not.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/nth-child.json b/css/selectors/nth-child.json
index 205fa69a5deaff..cb23093ca705d2 100644
--- a/css/selectors/nth-child.json
+++ b/css/selectors/nth-child.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -108,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/nth-last-child.json b/css/selectors/nth-last-child.json
index 3ad1ddf77b2ac8..4eafc0162f1b02 100644
--- a/css/selectors/nth-last-child.json
+++ b/css/selectors/nth-last-child.json
@@ -38,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/nth-last-of-type.json b/css/selectors/nth-last-of-type.json
index 3937aea17a5f98..1d2262c6cef6e5 100644
--- a/css/selectors/nth-last-of-type.json
+++ b/css/selectors/nth-last-of-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/nth-of-type.json b/css/selectors/nth-of-type.json
index b5545c12bbd662..a39b9cfa3a66c1 100644
--- a/css/selectors/nth-of-type.json
+++ b/css/selectors/nth-of-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/only-child.json b/css/selectors/only-child.json
index b1c3d467531061..733a5db83b63f7 100644
--- a/css/selectors/only-child.json
+++ b/css/selectors/only-child.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/only-of-type.json b/css/selectors/only-of-type.json
index 3d3e338b1c854e..31e45c47ad0905 100644
--- a/css/selectors/only-of-type.json
+++ b/css/selectors/only-of-type.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/open.json b/css/selectors/open.json
index c6cb3e3cd3ca55..e3f823bf990fec 100644
--- a/css/selectors/open.json
+++ b/css/selectors/open.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/optional.json b/css/selectors/optional.json
index 86f3579766551c..4ae70b421d38bf 100644
--- a/css/selectors/optional.json
+++ b/css/selectors/optional.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/out-of-range.json b/css/selectors/out-of-range.json
index 7f85117cec1809..dddfc5596e1a08 100644
--- a/css/selectors/out-of-range.json
+++ b/css/selectors/out-of-range.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/part.json b/css/selectors/part.json
index cc3faf44b04654..09d4f788471fe8 100644
--- a/css/selectors/part.json
+++ b/css/selectors/part.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/past.json b/css/selectors/past.json
index 8479b9b0630db5..cac457354129be 100644
--- a/css/selectors/past.json
+++ b/css/selectors/past.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/paused.json b/css/selectors/paused.json
index 77d821f520c7bc..e22a1fa1ab1aed 100644
--- a/css/selectors/paused.json
+++ b/css/selectors/paused.json
@@ -5,7 +5,10 @@
         "__compat": {
           "description": "<code>:paused</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:paused",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-paused",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-paused",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-paused"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/picture-in-picture.json b/css/selectors/picture-in-picture.json
index eaeb63602a40f7..ad7f660038c1dc 100644
--- a/css/selectors/picture-in-picture.json
+++ b/css/selectors/picture-in-picture.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/placeholder-shown.json b/css/selectors/placeholder-shown.json
index f2425b13bb2964..f23183ff61025d 100644
--- a/css/selectors/placeholder-shown.json
+++ b/css/selectors/placeholder-shown.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/placeholder.json b/css/selectors/placeholder.json
index f7d71aeac5bd05..c2f68a781821c9 100644
--- a/css/selectors/placeholder.json
+++ b/css/selectors/placeholder.json
@@ -66,7 +66,8 @@
                 "prefix": "-webkit-input-",
                 "version_added": "2"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/playing.json b/css/selectors/playing.json
index 9097072e158819..9e9f0b318545b4 100644
--- a/css/selectors/playing.json
+++ b/css/selectors/playing.json
@@ -5,7 +5,10 @@
         "__compat": {
           "description": "<code>:playing</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:playing",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-playing",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-playing",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-playing"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/popover-open.json b/css/selectors/popover-open.json
index 40da05f04c46b0..4f28ce15582960 100644
--- a/css/selectors/popover-open.json
+++ b/css/selectors/popover-open.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/read-only.json b/css/selectors/read-only.json
index f35639b208676d..2ae8f32a7c3389 100644
--- a/css/selectors/read-only.json
+++ b/css/selectors/read-only.json
@@ -47,7 +47,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/read-write.json b/css/selectors/read-write.json
index 29f5324a257dd5..16c17b834eb133 100644
--- a/css/selectors/read-write.json
+++ b/css/selectors/read-write.json
@@ -47,7 +47,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/required.json b/css/selectors/required.json
index 480bf624430216..556ec582ebacd3 100644
--- a/css/selectors/required.json
+++ b/css/selectors/required.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4.3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/right.json b/css/selectors/right.json
index c438c5991d7d21..bac1a9981a576e 100644
--- a/css/selectors/right.json
+++ b/css/selectors/right.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/root.json b/css/selectors/root.json
index 57a9741abe31c5..9efbc41a661a8b 100644
--- a/css/selectors/root.json
+++ b/css/selectors/root.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/scope.json b/css/selectors/scope.json
index 95591699affbe2..81c0bff6352be5 100644
--- a/css/selectors/scope.json
+++ b/css/selectors/scope.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/seeking.json b/css/selectors/seeking.json
index 2a26c5e3396613..86b30591cf1505 100644
--- a/css/selectors/seeking.json
+++ b/css/selectors/seeking.json
@@ -4,7 +4,10 @@
       "seeking": {
         "__compat": {
           "description": "<code>:seeking</code>",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-seeking",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-seeking",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-seeking"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/selection.json b/css/selectors/selection.json
index 0d86bc6a09144e..6e9bdfb158599d 100644
--- a/css/selectors/selection.json
+++ b/css/selectors/selection.json
@@ -41,7 +41,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/slotted.json b/css/selectors/slotted.json
index 9f91b15d61a060..5fdb060099d660 100644
--- a/css/selectors/slotted.json
+++ b/css/selectors/slotted.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/spelling-error.json b/css/selectors/spelling-error.json
index 5154f7382371c8..47350bf256b294 100644
--- a/css/selectors/spelling-error.json
+++ b/css/selectors/spelling-error.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/stalled.json b/css/selectors/stalled.json
index 6a46684fbc12b4..04da0a99948532 100644
--- a/css/selectors/stalled.json
+++ b/css/selectors/stalled.json
@@ -4,7 +4,10 @@
       "stalled": {
         "__compat": {
           "description": "<code>:stalled</code>",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-stalled",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-stalled",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-stalled"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/state.json b/css/selectors/state.json
index fd0f33095d3b22..1c1977459ca830 100644
--- a/css/selectors/state.json
+++ b/css/selectors/state.json
@@ -6,6 +6,9 @@
           "description": "Custom state pseudo-class selector (<code>:state()</code>)",
           "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:state",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-custom",
+          "tags": [
+            "web-features:state"
+          ],
           "support": {
             "chrome": [
               {
@@ -34,7 +37,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/subsequent-sibling.json b/css/selectors/subsequent-sibling.json
index 1deaaf22b59c70..b516f653b25e9e 100644
--- a/css/selectors/subsequent-sibling.json
+++ b/css/selectors/subsequent-sibling.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/target-text.json b/css/selectors/target-text.json
index 01ce8b70c63f66..60159188cd81c7 100644
--- a/css/selectors/target-text.json
+++ b/css/selectors/target-text.json
@@ -16,8 +16,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1694053"
+              "version_added": "131"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -27,15 +26,15 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": false,
-              "impl_url": "https://webkit.org/b/236817"
+              "version_added": "preview"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/css/selectors/target-within.json b/css/selectors/target-within.json
index a5b0aca1a91c2e..7e8b333d1681e5 100644
--- a/css/selectors/target-within.json
+++ b/css/selectors/target-within.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/selectors/target.json b/css/selectors/target.json
index 81d1ef2b975fe1..c300aff88b61aa 100644
--- a/css/selectors/target.json
+++ b/css/selectors/target.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/type.json b/css/selectors/type.json
index 7d9de23777d3b8..a55517978f5609 100644
--- a/css/selectors/type.json
+++ b/css/selectors/type.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/universal.json b/css/selectors/universal.json
index 081c7fd585bcb6..27f451c85b4893 100644
--- a/css/selectors/universal.json
+++ b/css/selectors/universal.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/user-invalid.json b/css/selectors/user-invalid.json
index 990b96bfd345ec..5c25406f3e4c09 100644
--- a/css/selectors/user-invalid.json
+++ b/css/selectors/user-invalid.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/user-valid.json b/css/selectors/user-valid.json
index db0d15b39afad8..94ad20c7a073e4 100644
--- a/css/selectors/user-valid.json
+++ b/css/selectors/user-valid.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/valid.json b/css/selectors/valid.json
index 2d95ac351c632a..3adf6099573d23 100644
--- a/css/selectors/valid.json
+++ b/css/selectors/valid.json
@@ -40,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/view-transition-group.json b/css/selectors/view-transition-group.json
index 1c1418a249f29d..581c22fa186249 100644
--- a/css/selectors/view-transition-group.json
+++ b/css/selectors/view-transition-group.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/view-transition-image-pair.json b/css/selectors/view-transition-image-pair.json
index d4a82e7698b611..7cb41b951ebf1b 100644
--- a/css/selectors/view-transition-image-pair.json
+++ b/css/selectors/view-transition-image-pair.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/view-transition-new.json b/css/selectors/view-transition-new.json
index 39e88df42a86ec..4eb30470d7b0b0 100644
--- a/css/selectors/view-transition-new.json
+++ b/css/selectors/view-transition-new.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/view-transition-old.json b/css/selectors/view-transition-old.json
index 25a50ac1ee3555..4495197a48ade0 100644
--- a/css/selectors/view-transition-old.json
+++ b/css/selectors/view-transition-old.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/view-transition.json b/css/selectors/view-transition.json
index 54b752e4f38e5b..d073b8c2e03f0b 100644
--- a/css/selectors/view-transition.json
+++ b/css/selectors/view-transition.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/visited.json b/css/selectors/visited.json
index 1e25ccca5efb1c..70033d74617d93 100644
--- a/css/selectors/visited.json
+++ b/css/selectors/visited.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/selectors/volume-locked.json b/css/selectors/volume-locked.json
index 682950a3584aaf..891ee2ef6bb7df 100644
--- a/css/selectors/volume-locked.json
+++ b/css/selectors/volume-locked.json
@@ -4,7 +4,10 @@
       "volume-locked": {
         "__compat": {
           "description": "<code>:volume-locked</code>",
-          "spec_url": "https://drafts.csswg.org/selectors/#selectordef-volume-locked",
+          "spec_url": [
+            "https://drafts.csswg.org/selectors/#selectordef-volume-locked",
+            "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-volume-locked"
+          ],
           "tags": [
             "web-features:media-pseudos"
           ],
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/selectors/where.json b/css/selectors/where.json
index 8ea0654695482d..850cba815351ff 100644
--- a/css/selectors/where.json
+++ b/css/selectors/where.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/-moz-image-rect.json b/css/types/-moz-image-rect.json
index 475632525c45b8..9acf37020c46ab 100644
--- a/css/types/-moz-image-rect.json
+++ b/css/types/-moz-image-rect.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/abs.json b/css/types/abs.json
index 5e4b0696af539b..9e59ab11faa819 100644
--- a/css/types/abs.json
+++ b/css/types/abs.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/acos.json b/css/types/acos.json
index 989c25ac40029c..65cf6d86671670 100644
--- a/css/types/acos.json
+++ b/css/types/acos.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/anchor-size.json b/css/types/anchor-size.json
index cb92724dd8c6a6..587cbd803b5e0f 100644
--- a/css/types/anchor-size.json
+++ b/css/types/anchor-size.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/types/anchor.json b/css/types/anchor.json
index 8e832a47925f61..196774db1476d0 100644
--- a/css/types/anchor.json
+++ b/css/types/anchor.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/css/types/angle-percentage.json b/css/types/angle-percentage.json
index 518eb15c8188fc..2c344bc4cba9d9 100644
--- a/css/types/angle-percentage.json
+++ b/css/types/angle-percentage.json
@@ -31,7 +31,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/angle.json b/css/types/angle.json
index 800dfd25db9ce6..fa20e342f0a13b 100644
--- a/css/types/angle.json
+++ b/css/types/angle.json
@@ -31,7 +31,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +106,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,7 +144,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -178,7 +182,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/asin.json b/css/types/asin.json
index 50c502dbd2bf1f..65b161b87daa82 100644
--- a/css/types/asin.json
+++ b/css/types/asin.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/atan.json b/css/types/atan.json
index 4fb5173b540d16..027272742e0771 100644
--- a/css/types/atan.json
+++ b/css/types/atan.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/atan2.json b/css/types/atan2.json
index 3c3ec071d33966..9679dec8729ac2 100644
--- a/css/types/atan2.json
+++ b/css/types/atan2.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/attr.json b/css/types/attr.json
index c6ab0a30ba5949..5f522ac4f41b8e 100644
--- a/css/types/attr.json
+++ b/css/types/attr.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -137,7 +140,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -172,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -207,7 +212,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -242,7 +248,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -277,7 +284,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -312,7 +320,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -347,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -382,7 +392,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -417,7 +428,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/css/types/basic-shape.json b/css/types/basic-shape.json
index 22db8e5f347a34..132b17f05daf2b 100644
--- a/css/types/basic-shape.json
+++ b/css/types/basic-shape.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -130,7 +133,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -250,7 +255,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -301,7 +307,8 @@
                   }
                 ],
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -340,7 +347,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -375,7 +383,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -410,7 +419,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -446,7 +456,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -483,7 +494,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -526,11 +538,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -567,7 +580,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/blend-mode.json b/css/types/blend-mode.json
index 3f5182db2b30ef..cf5efe112a6bc4 100644
--- a/css/types/blend-mode.json
+++ b/css/types/blend-mode.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/calc-constant.json b/css/types/calc-constant.json
index 12de8f5cfaaea9..a0070b86ed9dac 100644
--- a/css/types/calc-constant.json
+++ b/css/types/calc-constant.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/calc-size.json b/css/types/calc-size.json
new file mode 100644
index 00000000000000..ce4b096048eeea
--- /dev/null
+++ b/css/types/calc-size.json
@@ -0,0 +1,43 @@
+{
+  "css": {
+    "types": {
+      "calc-size": {
+        "__compat": {
+          "description": "<code>calc-size()</code>",
+          "spec_url": "https://drafts.csswg.org/css-values-5/#calc-size",
+          "support": {
+            "chrome": {
+              "version_added": "129"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false,
+              "impl_url": "https://bugzil.la/1896734"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false,
+              "impl_url": "https://webkit.org/b/274177"
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/types/calc.json b/css/types/calc.json
index 6d98552e083aae..7c6c61a09aee4a 100644
--- a/css/types/calc.json
+++ b/css/types/calc.json
@@ -70,7 +70,8 @@
                 "prefix": "-webkit-",
                 "version_added": "≤37"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -105,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -147,7 +149,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -223,7 +227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/clamp.json b/css/types/clamp.json
index 97042b8b378ba3..1defcefdf95ed0 100644
--- a/css/types/clamp.json
+++ b/css/types/clamp.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/color.json b/css/types/color.json
index 7ca851561b4b8b..e8fa95bbb3843e 100644
--- a/css/types/color.json
+++ b/css/types/color.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,7 +115,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -152,7 +155,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -194,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -232,7 +237,10 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": {
+                "version_added": false
+              }
             },
             "status": {
               "experimental": false,
@@ -246,6 +254,9 @@
             "description": "<code>currentcolor</code> keyword",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/color_value#currentcolor",
             "spec_url": "https://drafts.csswg.org/css-color/#currentcolor-color",
+            "tags": [
+              "web-features:currentcolor"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -273,7 +284,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,6 +299,9 @@
             "description": "<code>hsl()</code> (HSL color model)",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/color_value/hsl",
             "spec_url": "https://drafts.csswg.org/css-color/#the-hsl-notation",
+            "tags": [
+              "web-features:hsl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -316,7 +331,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -327,6 +343,9 @@
           "alpha_parameter": {
             "__compat": {
               "description": "Alpha parameter",
+              "tags": [
+                "web-features:hsl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "65"
@@ -348,7 +367,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -360,6 +380,9 @@
           "mixed_type_parameters": {
             "__compat": {
               "description": "Mix <code>&lt;percentage&gt;</code> and <code>&lt;number&gt;</code> in parameters",
+              "tags": [
+                "web-features:hsl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "121"
@@ -381,7 +404,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -422,7 +446,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -434,6 +459,9 @@
           "space_separated_parameters": {
             "__compat": {
               "description": "Space-separated parameters",
+              "tags": [
+                "web-features:hsl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "65"
@@ -455,7 +483,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -470,6 +499,9 @@
             "description": "<code>hwb()</code> (HWB color model)",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/color_value/hwb",
             "spec_url": "https://drafts.csswg.org/css-color/#the-hwb-notation",
+            "tags": [
+              "web-features:hwb"
+            ],
             "support": {
               "chrome": {
                 "version_added": "101"
@@ -491,7 +523,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -502,6 +535,9 @@
           "mixed_type_parameters": {
             "__compat": {
               "description": "Mix <code>&lt;percentage&gt;</code> and <code>&lt;number&gt;</code> in parameters",
+              "tags": [
+                "web-features:hwb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "121"
@@ -523,7 +559,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -564,7 +601,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -603,7 +641,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -638,7 +677,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -675,7 +715,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -714,7 +755,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -749,7 +791,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -788,7 +831,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -829,7 +873,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -843,6 +888,9 @@
             "description": "Named colors",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/named-color",
             "spec_url": "https://drafts.csswg.org/css-color/#named-colors",
+            "tags": [
+              "web-features:named-color"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -873,7 +921,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -883,6 +932,9 @@
           },
           "rebeccapurple": {
             "__compat": {
+              "tags": [
+                "web-features:named-color"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "38"
@@ -908,7 +960,54 @@
                   "version_added": "8"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
+              },
+              "status": {
+                "experimental": false,
+                "standard_track": true,
+                "deprecated": false
+              }
+            }
+          },
+          "transparent": {
+            "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/named-color#transparent",
+              "spec_url": "https://drafts.csswg.org/css-color/#transparent-color",
+              "tags": [
+                "web-features:named-color"
+              ],
+              "support": {
+                "chrome": {
+                  "version_added": "1"
+                },
+                "chrome_android": "mirror",
+                "edge": {
+                  "version_added": "12"
+                },
+                "firefox": {
+                  "version_added": "3"
+                },
+                "firefox_android": "mirror",
+                "ie": {
+                  "version_added": "9"
+                },
+                "oculus": "mirror",
+                "opera": {
+                  "version_added": "10"
+                },
+                "opera_android": {
+                  "version_added": "10.1"
+                },
+                "safari": {
+                  "version_added": "3.1"
+                },
+                "safari_ios": "mirror",
+                "samsunginternet_android": "mirror",
+                "webview_android": {
+                  "version_added": "37"
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -947,7 +1046,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -982,7 +1082,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1019,7 +1120,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1058,7 +1160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1093,7 +1196,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1132,7 +1236,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1147,6 +1252,9 @@
             "description": "<code>rgb()</code> (RGB color model)",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/color_value/rgb",
             "spec_url": "https://drafts.csswg.org/css-color/#rgb-functions",
+            "tags": [
+              "web-features:rgb"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1176,7 +1284,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1187,6 +1296,9 @@
           "alpha_parameter": {
             "__compat": {
               "description": "Alpha parameter",
+              "tags": [
+                "web-features:rgb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "65"
@@ -1208,7 +1320,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1220,6 +1333,9 @@
           "float_values": {
             "__compat": {
               "description": "Float values in parameters",
+              "tags": [
+                "web-features:rgb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "66"
@@ -1241,7 +1357,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1253,6 +1370,9 @@
           "mixed_type_parameters": {
             "__compat": {
               "description": "Mix <code>&lt;percentage&gt;</code> and <code>&lt;number&gt;</code> in parameters",
+              "tags": [
+                "web-features:rgb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "122"
@@ -1274,7 +1394,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1320,7 +1441,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1332,6 +1454,9 @@
           "space_separated_parameters": {
             "__compat": {
               "description": "Space-separated rgb() parameters",
+              "tags": [
+                "web-features:rgb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "65"
@@ -1353,7 +1478,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1368,6 +1494,9 @@
             "description": "RGB hexadecimal notation (<code>#RRGGBB</code>, <code>#RGB</code>, …)",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/hex-color",
             "spec_url": "https://drafts.csswg.org/css-color/#hex-notation",
+            "tags": [
+              "web-features:rgb"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1397,7 +1526,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1408,6 +1538,9 @@
           "alpha_hexadecimal_notation": {
             "__compat": {
               "description": "RGBA hexadecimal notation (<code>#RRGGBBAA</code>, <code>#RGBA</code>)",
+              "tags": [
+                "web-features:rgb"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "62"
@@ -1433,7 +1566,8 @@
                   "version_added": "9.3"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1448,6 +1582,9 @@
             "description": "System colors",
             "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/system-color",
             "spec_url": "https://drafts.csswg.org/css-color/#css-system-colors",
+            "tags": [
+              "web-features:system-color"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1477,7 +1614,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1492,6 +1630,9 @@
                 "https://drafts.csswg.org/css-color/#valdef-color-accentcolor",
                 "https://drafts.csswg.org/css-color/#valdef-color-accentcolortext"
               ],
+              "tags": [
+                "web-features:system-color"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "115",
@@ -1521,7 +1662,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1538,6 +1680,9 @@
                 "https://drafts.csswg.org/css-color/#valdef-color-marktext",
                 "https://drafts.csswg.org/css-color/#valdef-color-buttonborder"
               ],
+              "tags": [
+                "web-features:system-color"
+              ],
               "support": {
                 "chrome": {
                   "version_added": false
@@ -1559,7 +1704,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1568,49 +1714,6 @@
               }
             }
           }
-        },
-        "transparent": {
-          "__compat": {
-            "description": "<code>transparent</code> keyword",
-            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/named-color#transparent",
-            "spec_url": "https://drafts.csswg.org/css-color/#transparent-color",
-            "support": {
-              "chrome": {
-                "version_added": "1"
-              },
-              "chrome_android": "mirror",
-              "edge": {
-                "version_added": "12"
-              },
-              "firefox": {
-                "version_added": "3"
-              },
-              "firefox_android": "mirror",
-              "ie": {
-                "version_added": "9"
-              },
-              "oculus": "mirror",
-              "opera": {
-                "version_added": "10"
-              },
-              "opera_android": {
-                "version_added": "10.1"
-              },
-              "safari": {
-                "version_added": "3.1"
-              },
-              "safari_ios": "mirror",
-              "samsunginternet_android": "mirror",
-              "webview_android": {
-                "version_added": "37"
-              }
-            },
-            "status": {
-              "experimental": false,
-              "standard_track": true,
-              "deprecated": false
-            }
-          }
         }
       }
     }
diff --git a/css/types/cos.json b/css/types/cos.json
index 323f685e4ec57c..e42ac5686afbb0 100644
--- a/css/types/cos.json
+++ b/css/types/cos.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/counter.json b/css/types/counter.json
index 7c9b9a99214e68..6ffc95fc7ada03 100644
--- a/css/types/counter.json
+++ b/css/types/counter.json
@@ -35,7 +35,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/counters.json b/css/types/counters.json
index 62db557bf65bca..66c33111104d82 100644
--- a/css/types/counters.json
+++ b/css/types/counters.json
@@ -35,7 +35,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/dimension.json b/css/types/dimension.json
index 18f0d4cf93172a..11818c6ff9510d 100644
--- a/css/types/dimension.json
+++ b/css/types/dimension.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/easing-function.json b/css/types/easing-function.json
index b9275784d99907..fc58f4dce8fa04 100644
--- a/css/types/easing-function.json
+++ b/css/types/easing-function.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -146,7 +149,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -178,7 +182,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/types/exp.json b/css/types/exp.json
index 9d3eaca02405aa..a646ab810a24c4 100644
--- a/css/types/exp.json
+++ b/css/types/exp.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/filter-function.json b/css/types/filter-function.json
index c6fe004228e553..1fdd3025990353 100644
--- a/css/types/filter-function.json
+++ b/css/types/filter-function.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4.4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -120,7 +122,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +166,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +210,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,7 +254,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -292,7 +298,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -335,7 +342,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -378,7 +386,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -421,7 +430,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -464,7 +474,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/flex.json b/css/types/flex.json
index 275e1f397becee..c3147483932895 100644
--- a/css/types/flex.json
+++ b/css/types/flex.json
@@ -38,7 +38,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "57"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/frequency-percentage.json b/css/types/frequency-percentage.json
index fb8a3feb11e454..986f801733204b 100644
--- a/css/types/frequency-percentage.json
+++ b/css/types/frequency-percentage.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/frequency.json b/css/types/frequency.json
index c27d4b3024474c..b5c6bef899cf75 100644
--- a/css/types/frequency.json
+++ b/css/types/frequency.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/global_keywords.json b/css/types/global_keywords.json
index 7fef984d7d9de2..40bf52b7531446 100644
--- a/css/types/global_keywords.json
+++ b/css/types/global_keywords.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +183,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -215,7 +220,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/hypot.json b/css/types/hypot.json
index 530373888c6366..9dec46caf67881 100644
--- a/css/types/hypot.json
+++ b/css/types/hypot.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/image.json b/css/types/image.json
index 73df91dacc0878..92a703485fc28c 100644
--- a/css/types/image.json
+++ b/css/types/image.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +92,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -247,7 +250,8 @@
                   "prefix": "-webkit-",
                   "version_added": "≤37"
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,7 +288,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -319,7 +324,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -331,6 +337,9 @@
             "hue_interpolation_method": {
               "__compat": {
                 "description": "Hue interpolation method",
+                "tags": [
+                  "web-features:conic-gradients"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "111"
@@ -366,7 +375,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -378,6 +388,9 @@
             "interpolation_color_space": {
               "__compat": {
                 "description": "Interpolation color space",
+                "tags": [
+                  "web-features:conic-gradients"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "111"
@@ -413,7 +426,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -520,7 +534,8 @@
                     "prefix": "-webkit-",
                     "version_added": "≤37"
                   }
-                ]
+                ],
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -552,7 +567,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -599,7 +615,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -646,7 +663,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -679,7 +697,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -712,7 +731,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -749,7 +769,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -793,7 +814,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -890,7 +912,8 @@
                     "prefix": "-webkit-",
                     "version_added": "≤37"
                   }
-                ]
+                ],
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -928,7 +951,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -961,7 +985,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1008,7 +1033,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1055,7 +1081,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1088,7 +1115,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1121,7 +1149,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1160,7 +1189,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1171,6 +1201,9 @@
             "hue_interpolation_method": {
               "__compat": {
                 "description": "Hue interpolation method",
+                "tags": [
+                  "web-features:conic-gradients"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "111"
@@ -1206,7 +1239,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1218,6 +1252,9 @@
             "interpolation_color_space": {
               "__compat": {
                 "description": "Interpolation color space",
+                "tags": [
+                  "web-features:conic-gradients"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "111"
@@ -1253,7 +1290,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1361,7 +1399,8 @@
                     "prefix": "-webkit-",
                     "version_added": "≤37"
                   }
-                ]
+                ],
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1393,7 +1432,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1440,7 +1480,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1487,7 +1528,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1520,7 +1562,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1557,7 +1600,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1601,7 +1645,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1712,7 +1757,8 @@
                     "prefix": "-webkit-",
                     "version_added": "≤37"
                   }
-                ]
+                ],
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1776,7 +1822,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1809,7 +1856,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1856,7 +1904,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1903,7 +1952,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1938,7 +1988,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1976,7 +2027,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2071,7 +2123,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2113,7 +2166,8 @@
               "samsunginternet_android": {
                 "version_added": "9.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2147,7 +2201,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/css/types/integer.json b/css/types/integer.json
index 6d3a79a156ded1..f4f8d269a75ff4 100644
--- a/css/types/integer.json
+++ b/css/types/integer.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/length-percentage.json b/css/types/length-percentage.json
index d7c7ba829e40f4..698471157f06be 100644
--- a/css/types/length-percentage.json
+++ b/css/types/length-percentage.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/length.json b/css/types/length.json
index 9deb63a5644a0c..d19ab068397a9d 100644
--- a/css/types/length.json
+++ b/css/types/length.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +147,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +184,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +226,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "1"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -260,7 +266,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -333,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -367,7 +376,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -401,7 +411,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -444,7 +455,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -478,7 +490,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -512,7 +525,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -546,7 +560,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -582,7 +597,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -623,7 +639,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -659,7 +676,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -695,7 +713,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -731,7 +750,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -767,7 +787,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -808,7 +829,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "1.5"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -859,7 +881,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -900,7 +923,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/line-style.json b/css/types/line-style.json
index e07f99dce8aeba..aeffeb34e8120f 100644
--- a/css/types/line-style.json
+++ b/css/types/line-style.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/log.json b/css/types/log.json
index 620f0538cffc40..1ee21807bfb41d 100644
--- a/css/types/log.json
+++ b/css/types/log.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/max.json b/css/types/max.json
index 3bb46cf5b9ce4c..6f5a26d333cada 100644
--- a/css/types/max.json
+++ b/css/types/max.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/min.json b/css/types/min.json
index 80d6bfa5ae08de..2d72b0a197fcb3 100644
--- a/css/types/min.json
+++ b/css/types/min.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/mod.json b/css/types/mod.json
index 815ec5624b1616..b96d0885f7ef13 100644
--- a/css/types/mod.json
+++ b/css/types/mod.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/number.json b/css/types/number.json
index fca41964f9cd14..b19a61c6c6cd21 100644
--- a/css/types/number.json
+++ b/css/types/number.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/overflow.json b/css/types/overflow.json
index 880bce1014338a..0179aad57aa066 100644
--- a/css/types/overflow.json
+++ b/css/types/overflow.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -117,7 +119,8 @@
               "samsunginternet_android": {
                 "version_added": "4.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/percentage.json b/css/types/percentage.json
index 8277aa9783bf35..f3980580d93a54 100644
--- a/css/types/percentage.json
+++ b/css/types/percentage.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/position.json b/css/types/position.json
index a0948bb0f51ae5..e95d229a2a7c07 100644
--- a/css/types/position.json
+++ b/css/types/position.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -108,7 +110,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/pow.json b/css/types/pow.json
index 85ddf549821cea..3c742f02e6d128 100644
--- a/css/types/pow.json
+++ b/css/types/pow.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/ratio.json b/css/types/ratio.json
index 72ac676cfb5341..b6568c43e2d065 100644
--- a/css/types/ratio.json
+++ b/css/types/ratio.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/css/types/ray.json b/css/types/ray.json
index d51c37eb731b9d..73453524cec0a1 100644
--- a/css/types/ray.json
+++ b/css/types/ray.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +94,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/rem.json b/css/types/rem.json
index a667780c9102f5..647fbc68d6ba13 100644
--- a/css/types/rem.json
+++ b/css/types/rem.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/resolution.json b/css/types/resolution.json
index 19007a6f2e3e20..78db527fe99102 100644
--- a/css/types/resolution.json
+++ b/css/types/resolution.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +184,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/round.json b/css/types/round.json
index 064152ae9b08f1..ca68257ae7fb84 100644
--- a/css/types/round.json
+++ b/css/types/round.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/shape.json b/css/types/shape.json
index 1ca88f4bba6ce5..a29357a378c1a7 100644
--- a/css/types/shape.json
+++ b/css/types/shape.json
@@ -33,7 +33,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/sign.json b/css/types/sign.json
index c48d745335605e..eef6b9f8c08480 100644
--- a/css/types/sign.json
+++ b/css/types/sign.json
@@ -31,7 +31,10 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": {
+              "version_added": false
+            }
           },
           "status": {
             "experimental": false,
diff --git a/css/types/sin.json b/css/types/sin.json
index 4db191d7177e59..5cb86de193048b 100644
--- a/css/types/sin.json
+++ b/css/types/sin.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/sqrt.json b/css/types/sqrt.json
index d5397683788f4b..a0e986c05ab687 100644
--- a/css/types/sqrt.json
+++ b/css/types/sqrt.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/string.json b/css/types/string.json
index 4a1852710d610a..dc89f739c206aa 100644
--- a/css/types/string.json
+++ b/css/types/string.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/tan.json b/css/types/tan.json
index 4fcf9d5e6f5939..1d38ebb0c3f76a 100644
--- a/css/types/tan.json
+++ b/css/types/tan.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/time-percentage.json b/css/types/time-percentage.json
index a4807da7523145..8cfe3bf798c13f 100644
--- a/css/types/time-percentage.json
+++ b/css/types/time-percentage.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/time.json b/css/types/time.json
index 52af3776c1f5b9..a0a81d9eb0fd0a 100644
--- a/css/types/time.json
+++ b/css/types/time.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/css/types/transform-function.json b/css/types/transform-function.json
index c7814a0f649af5..660de26fdf4ba9 100644
--- a/css/types/transform-function.json
+++ b/css/types/transform-function.json
@@ -44,7 +44,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +95,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +141,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +184,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +233,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -271,7 +276,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -313,7 +319,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -355,7 +362,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -397,7 +405,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -445,7 +454,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -487,7 +497,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -535,7 +546,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -583,7 +595,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -625,7 +638,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -676,7 +690,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -724,7 +739,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -772,7 +788,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -820,7 +837,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -862,7 +880,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -910,7 +929,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -958,7 +978,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "2"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1000,7 +1021,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/css/types/url.json b/css/types/url.json
index 9a5032bfdc3339..f7a0d2242148e3 100644
--- a/css/types/url.json
+++ b/css/types/url.json
@@ -4,7 +4,7 @@
       "url": {
         "__compat": {
           "description": "<code>&lt;url&gt;</code>",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/url",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/url_value",
           "spec_url": "https://drafts.csswg.org/css-values/#urls",
           "support": {
             "chrome": {
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/a.json b/html/elements/a.json
index fc5554e51dcffb..0914ba78e0d663 100644
--- a/html/elements/a.json
+++ b/html/elements/a.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/a",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-a-element",
+          "tags": [
+            "web-features:a"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -94,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -129,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -164,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +221,8 @@
                 "version_added": "13"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -225,6 +234,9 @@
         "href": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-href",
+            "tags": [
+              "web-features:a"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -248,7 +260,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -280,7 +293,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -315,7 +329,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -328,6 +343,9 @@
         "hreflang": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-hreflang",
+            "tags": [
+              "web-features:a"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -351,7 +369,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -384,7 +403,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -419,7 +439,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -458,7 +479,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -470,6 +492,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "51"
@@ -493,7 +518,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -528,7 +554,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -564,7 +591,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -600,7 +628,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -613,6 +642,9 @@
         "rel": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-rel",
+            "tags": [
+              "web-features:a"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -636,7 +668,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -648,6 +681,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/rel/noopener",
               "spec_url": "https://html.spec.whatwg.org/multipage/links.html#link-type-noopener",
+              "tags": [
+                "web-features:a"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "49"
@@ -670,7 +706,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -683,6 +720,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/rel/noreferrer",
               "spec_url": "https://html.spec.whatwg.org/multipage/links.html#link-type-noreferrer",
+              "tags": [
+                "web-features:a"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "16"
@@ -710,7 +750,8 @@
                 "samsunginternet_android": {
                   "version_added": "1.5"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -746,7 +787,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -781,7 +823,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -793,6 +836,9 @@
         "target": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-target",
+            "tags": [
+              "web-features:a"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -816,7 +862,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -848,7 +895,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -868,8 +916,7 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1753933"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -883,7 +930,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -895,6 +943,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-type",
+            "tags": [
+              "web-features:a"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -918,7 +969,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/abbr.json b/html/elements/abbr.json
index b70d3e2e133271..3ac9532b0b2a51 100644
--- a/html/elements/abbr.json
+++ b/html/elements/abbr.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/abbr",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-abbr-element",
+          "tags": [
+            "web-features:abbr"
+          ],
           "support": {
             "chrome": {
               "version_added": "2"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/acronym.json b/html/elements/acronym.json
index a82ba595143820..602d70461930c0 100644
--- a/html/elements/acronym.json
+++ b/html/elements/acronym.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/address.json b/html/elements/address.json
index da57926e9a819f..4a5d18179a2fba 100644
--- a/html/elements/address.json
+++ b/html/elements/address.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/address",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-address-element",
+          "tags": [
+            "web-features:address"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/area.json b/html/elements/area.json
index 2d710d86cc7ff3..85a55bd5861c80 100644
--- a/html/elements/area.json
+++ b/html/elements/area.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/area",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#the-area-element",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,6 +43,9 @@
         "alt": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#attr-area-alt",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -62,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -74,6 +82,9 @@
         "coords": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#attr-area-coords",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -97,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -132,7 +144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,6 +157,9 @@
         "href": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-href",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -167,7 +183,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,6 +196,9 @@
         "implicit_noopener": {
           "__compat": {
             "description": "<code>target=\"_blank\"</code> implies <code>rel=\"noopener\"</code> behavior",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "88"
@@ -202,7 +222,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +258,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -276,7 +298,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -288,6 +311,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "51"
@@ -311,7 +337,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -346,7 +373,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -382,7 +410,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -418,7 +447,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -431,6 +461,9 @@
         "rel": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-rel",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "16"
@@ -454,7 +487,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -466,6 +500,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/rel/noopener",
               "spec_url": "https://html.spec.whatwg.org/multipage/links.html#link-type-noopener",
+              "tags": [
+                "web-features:image-maps"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "49"
@@ -488,7 +525,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -501,6 +539,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/rel/noreferrer",
               "spec_url": "https://html.spec.whatwg.org/multipage/links.html#link-type-noreferrer",
+              "tags": [
+                "web-features:image-maps"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "16"
@@ -528,7 +569,8 @@
                 "samsunginternet_android": {
                   "version_added": "1.5"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -541,6 +583,9 @@
         "shape": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#attr-area-shape",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -564,7 +609,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -598,7 +644,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -610,6 +657,9 @@
         "target": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-target",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -633,7 +683,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/article.json b/html/elements/article.json
index ea0ecbc55a5e50..61d20db9043359 100644
--- a/html/elements/article.json
+++ b/html/elements/article.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/article",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-article-element",
+          "tags": [
+            "web-features:article"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/aside.json b/html/elements/aside.json
index 2c02320f3e328a..79a0c60fd65963 100644
--- a/html/elements/aside.json
+++ b/html/elements/aside.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/aside",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-aside-element",
+          "tags": [
+            "web-features:aside"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/audio.json b/html/elements/audio.json
index 754317c7e57aac..f7451ec728a01b 100644
--- a/html/elements/audio.json
+++ b/html/elements/audio.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/audio",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#the-audio-element",
+          "tags": [
+            "web-features:audio"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -37,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -48,6 +52,9 @@
         "autoplay": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-autoplay",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -79,7 +86,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,6 +99,9 @@
         "controls": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-controls",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -122,7 +133,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -158,7 +170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,6 +183,9 @@
         "crossorigin": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-crossorigin",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "33"
@@ -201,7 +217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -241,7 +258,8 @@
               "webview_android": {
                 "version_added": false,
                 "impl_url": "https://crbug.com/521319"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -253,6 +271,9 @@
         "loop": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-loop",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -284,7 +305,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,6 +318,9 @@
         "muted": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-muted",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "15"
@@ -319,7 +344,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -331,6 +357,9 @@
         "preload": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-preload",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3",
@@ -387,7 +416,8 @@
               "webview_android": {
                 "version_added": "3",
                 "notes": "Defaults to <code>metadata</code> in Chrome 64."
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -399,6 +429,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-src",
+            "tags": [
+              "web-features:audio"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -430,7 +463,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/b.json b/html/elements/b.json
index 9fd3f6feafbc33..9c0f4dd0ea5178 100644
--- a/html/elements/b.json
+++ b/html/elements/b.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/b",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-b-element",
+          "tags": [
+            "web-features:b"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/base.json b/html/elements/base.json
index c7d92d747a231b..10a0be8f5de0bc 100644
--- a/html/elements/base.json
+++ b/html/elements/base.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/base",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-base-element",
+          "tags": [
+            "web-features:base"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
         "href": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-base-href",
+            "tags": [
+              "web-features:base"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -63,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -74,6 +82,9 @@
           "forbid_data_javascript_urls": {
             "__compat": {
               "description": "<code>data:</code> and <code>javascript:</code> urls are not allowed",
+              "tags": [
+                "web-features:base"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "58"
@@ -95,7 +106,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -107,6 +119,9 @@
           "relative_url": {
             "__compat": {
               "description": "Relative URIs.",
+              "tags": [
+                "web-features:base"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "1"
@@ -130,7 +145,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -143,6 +159,9 @@
         "target": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-base-target",
+            "tags": [
+              "web-features:base"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -166,7 +185,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/bdi.json b/html/elements/bdi.json
index 2117bf0d1a585a..0a8b4f96ba2bcd 100644
--- a/html/elements/bdi.json
+++ b/html/elements/bdi.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/bdi",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-bdi-element",
+          "tags": [
+            "web-features:bdi"
+          ],
           "support": {
             "chrome": {
               "version_added": "16"
@@ -28,7 +31,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/bdo.json b/html/elements/bdo.json
index c8a166c4e80641..c10e4e46665588 100644
--- a/html/elements/bdo.json
+++ b/html/elements/bdo.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/bdo",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-bdo-element",
+          "tags": [
+            "web-features:bdo"
+          ],
           "support": {
             "chrome": {
               "version_added": "≤15"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/big.json b/html/elements/big.json
index 50f34fbd558162..2507e3542410b6 100644
--- a/html/elements/big.json
+++ b/html/elements/big.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/blockquote.json b/html/elements/blockquote.json
index a93a7f5f0b67a1..794b4916112a77 100644
--- a/html/elements/blockquote.json
+++ b/html/elements/blockquote.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/blockquote",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-blockquote-element",
+          "tags": [
+            "web-features:blockquote"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -38,6 +42,9 @@
         },
         "cite": {
           "__compat": {
+            "tags": [
+              "web-features:blockquote"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -61,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/body.json b/html/elements/body.json
index 11dde5a09e6eb4..1efa06fb2e55dd 100644
--- a/html/elements/body.json
+++ b/html/elements/body.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/body",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-body-element",
+          "tags": [
+            "web-features:body"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +307,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -329,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -363,7 +376,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/br.json b/html/elements/br.json
index 2bc0018cc21272..eba9195602631d 100644
--- a/html/elements/br.json
+++ b/html/elements/br.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/br",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-br-element",
+          "tags": [
+            "web-features:br"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/button.json b/html/elements/button.json
index 2012778a4d31f5..c338eca6078e7f 100644
--- a/html/elements/button.json
+++ b/html/elements/button.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/button",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element",
+          "tags": [
+            "web-features:button"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -44,6 +48,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-disabled",
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -67,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -78,6 +86,9 @@
         },
         "form": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -101,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -112,6 +124,9 @@
         },
         "formaction": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -137,7 +152,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -148,6 +164,9 @@
         },
         "formenctype": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -177,7 +196,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -188,6 +208,9 @@
         },
         "formmethod": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -213,7 +236,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -224,6 +248,9 @@
         },
         "formnovalidate": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -247,7 +274,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -258,6 +286,9 @@
         },
         "formtarget": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -281,7 +312,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -292,6 +324,9 @@
         },
         "name": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -315,7 +350,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -352,7 +388,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -389,7 +426,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -400,6 +438,9 @@
         },
         "type": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -423,7 +464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -434,6 +476,9 @@
         },
         "value": {
           "__compat": {
+            "tags": [
+              "web-features:button"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -457,7 +502,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/canvas.json b/html/elements/canvas.json
index 864b129d4de61f..4abb7f303d933c 100644
--- a/html/elements/canvas.json
+++ b/html/elements/canvas.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/canvas",
           "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#the-canvas-element",
+          "tags": [
+            "web-features:canvas"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -42,7 +45,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -53,6 +57,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#attr-canvas-height",
+            "tags": [
+              "web-features:canvas"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -90,7 +97,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -122,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,6 +143,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/canvas.html#attr-canvas-width",
+            "tags": [
+              "web-features:canvas"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -171,7 +183,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/caption.json b/html/elements/caption.json
index 52de01aa7a5750..618801a8541ed2 100644
--- a/html/elements/caption.json
+++ b/html/elements/caption.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/caption",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-caption-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/center.json b/html/elements/center.json
index e50434095e5743..987341bbdab7e6 100644
--- a/html/elements/center.json
+++ b/html/elements/center.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/cite.json b/html/elements/cite.json
index 125d09ed3e6b13..1ecca442f94c86 100644
--- a/html/elements/cite.json
+++ b/html/elements/cite.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/cite",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-cite-element",
+          "tags": [
+            "web-features:cite"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/code.json b/html/elements/code.json
index 093e20fb9a7f9b..67d5df732334ac 100644
--- a/html/elements/code.json
+++ b/html/elements/code.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/code",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-code-element",
+          "tags": [
+            "web-features:code"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/col.json b/html/elements/col.json
index ede13a048db61e..b9dedb0780c402 100644
--- a/html/elements/col.json
+++ b/html/elements/col.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/col",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-col-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -146,6 +150,9 @@
         "span": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#attr-col-span",
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -169,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -239,7 +247,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/colgroup.json b/html/elements/colgroup.json
index c0bf7aedeb34d7..3e85baa07795f1 100644
--- a/html/elements/colgroup.json
+++ b/html/elements/colgroup.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/colgroup",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-colgroup-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -147,6 +151,9 @@
         "span": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#attr-colgroup-span",
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -170,7 +177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -241,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/data.json b/html/elements/data.json
index 268e5d61793cec..49b358b330e0c9 100644
--- a/html/elements/data.json
+++ b/html/elements/data.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/data",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-data-element",
+          "tags": [
+            "web-features:data"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,6 +43,9 @@
         "value": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#attr-data-value",
+            "tags": [
+              "web-features:data"
+            ],
             "support": {
               "chrome": {
                 "version_added": "62"
@@ -62,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/datalist.json b/html/elements/datalist.json
index 6c896194a063e1..31ade8217f1382 100644
--- a/html/elements/datalist.json
+++ b/html/elements/datalist.json
@@ -18,11 +18,19 @@
             "edge": {
               "version_added": "12"
             },
-            "firefox": {
-              "version_added": "4",
-              "partial_implementation": true,
-              "notes": "The <code>&lt;datalist&gt;</code> element will only create a dropdown for textual types, such as <code>text</code>, <code>search</code>, <code>url</code>, <code>tel</code>, <code>email</code> and <code>number</code>. The <code>date</code>, <code>time</code>, <code>range</code> and <code>color</code> types are not supported."
-            },
+            "firefox": [
+              {
+                "version_added": "110",
+                "partial_implementation": true,
+                "notes": "The <code>date</code> and <code>time</code> input types are not supported."
+              },
+              {
+                "version_added": "4",
+                "version_removed": "110",
+                "partial_implementation": true,
+                "notes": "The <code>&lt;datalist&gt;</code> element will only create a dropdown for textual types, such as <code>text</code>, <code>search</code>, <code>url</code>, <code>tel</code>, <code>email</code> and <code>number</code>. The <code>date</code>, <code>time</code>, <code>range</code> and <code>color</code> types are not supported."
+              }
+            ],
             "firefox_android": [
               {
                 "version_added": "79",
@@ -47,7 +55,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/dd.json b/html/elements/dd.json
index 489d7c4eb4980e..b2df877df229aa 100644
--- a/html/elements/dd.json
+++ b/html/elements/dd.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/del.json b/html/elements/del.json
index 0d911a824cc328..58e53b18e2bc43 100644
--- a/html/elements/del.json
+++ b/html/elements/del.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/del",
           "spec_url": "https://html.spec.whatwg.org/multipage/edits.html#the-del-element",
+          "tags": [
+            "web-features:del"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -38,6 +42,9 @@
         },
         "cite": {
           "__compat": {
+            "tags": [
+              "web-features:del"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -72,6 +79,9 @@
         },
         "datetime": {
           "__compat": {
+            "tags": [
+              "web-features:del"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
diff --git a/html/elements/details.json b/html/elements/details.json
index 344a45b3249b72..e884092321f45d 100644
--- a/html/elements/details.json
+++ b/html/elements/details.json
@@ -33,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/dfn.json b/html/elements/dfn.json
index ad8f79b6d5ab15..71b225795118d1 100644
--- a/html/elements/dfn.json
+++ b/html/elements/dfn.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/dfn",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-dfn-element",
+          "tags": [
+            "web-features:dfn"
+          ],
           "support": {
             "chrome": {
               "version_added": "15"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/dialog.json b/html/elements/dialog.json
index a0c090eb055e25..2663c5d547970b 100644
--- a/html/elements/dialog.json
+++ b/html/elements/dialog.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/dir.json b/html/elements/dir.json
index c09dd3357e6b10..4dd58913d1603b 100644
--- a/html/elements/dir.json
+++ b/html/elements/dir.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/div.json b/html/elements/div.json
index 391f8a3e7a6a9f..ee239ead24d584 100644
--- a/html/elements/div.json
+++ b/html/elements/div.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/div",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-div-element",
+          "tags": [
+            "web-features:div"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/dl.json b/html/elements/dl.json
index c32aca5f851708..180c093b314422 100644
--- a/html/elements/dl.json
+++ b/html/elements/dl.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/dt.json b/html/elements/dt.json
index f50259472f3de0..ac291a1b9a7958 100644
--- a/html/elements/dt.json
+++ b/html/elements/dt.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/em.json b/html/elements/em.json
index a0b78321942ca4..2b542502256202 100644
--- a/html/elements/em.json
+++ b/html/elements/em.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/em",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-em-element",
+          "tags": [
+            "web-features:em"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/embed.json b/html/elements/embed.json
index 7b04ea10545d5d..320de29f76c94f 100644
--- a/html/elements/embed.json
+++ b/html/elements/embed.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/embed",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-embed-element",
+          "tags": [
+            "web-features:embed"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -80,6 +85,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:embed"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -107,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -146,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -158,6 +168,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-embed-src",
+            "tags": [
+              "web-features:embed"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -185,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,6 +211,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-embed-type",
+            "tags": [
+              "web-features:embed"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -222,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,6 +252,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:embed"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -261,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/fencedframe.json b/html/elements/fencedframe.json
index cf80219660447d..ab44415098da6a 100644
--- a/html/elements/fencedframe.json
+++ b/html/elements/fencedframe.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/elements/fieldset.json b/html/elements/fieldset.json
index 8f291c652181ca..467c5b4684b2ff 100644
--- a/html/elements/fieldset.json
+++ b/html/elements/fieldset.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/fieldset",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-fieldset-element",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "1",
@@ -34,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -46,6 +50,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-disabled",
+            "tags": [
+              "web-features:fieldset"
+            ],
             "support": {
               "chrome": {
                 "version_added": "20"
@@ -76,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -88,6 +96,9 @@
         "form": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fae-form",
+            "tags": [
+              "web-features:fieldset"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -123,6 +134,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-name",
+            "tags": [
+              "web-features:fieldset"
+            ],
             "support": {
               "chrome": {
                 "version_added": "19"
@@ -146,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/figcaption.json b/html/elements/figcaption.json
index bac84839a52137..3f27331802065c 100644
--- a/html/elements/figcaption.json
+++ b/html/elements/figcaption.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/figcaption",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-figcaption-element",
+          "tags": [
+            "web-features:figure"
+          ],
           "support": {
             "chrome": {
               "version_added": "8"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/figure.json b/html/elements/figure.json
index 8372f284430c48..a2b985687bd436 100644
--- a/html/elements/figure.json
+++ b/html/elements/figure.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/figure",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-figure-element",
+          "tags": [
+            "web-features:figure"
+          ],
           "support": {
             "chrome": {
               "version_added": "8"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/font.json b/html/elements/font.json
index fcb05a32cb2250..eba4d162e24fdf 100644
--- a/html/elements/font.json
+++ b/html/elements/font.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/footer.json b/html/elements/footer.json
index 4e97f971bbae5b..6db4df285a0f4d 100644
--- a/html/elements/footer.json
+++ b/html/elements/footer.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/footer",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-footer-element",
+          "tags": [
+            "web-features:header-footer"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/form.json b/html/elements/form.json
index 7e8663ee8ef06b..152686093bb072 100644
--- a/html/elements/form.json
+++ b/html/elements/form.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/form",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#the-form-element",
+          "tags": [
+            "web-features:form"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -24,11 +27,12 @@
             "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
-              "version_added": "≤4"
+              "version_added": "3"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,6 +43,9 @@
         "accept-charset": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#attr-form-accept-charset",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -62,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -74,6 +82,9 @@
         "action": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fs-action",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -93,11 +104,12 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "≤4"
+                "version_added": "3"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,6 +121,9 @@
         "autocomplete": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#attr-form-autocomplete",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "14",
@@ -133,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +181,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -202,7 +219,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -236,7 +254,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -249,6 +268,9 @@
         "enctype": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fs-enctype",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -272,7 +294,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,6 +307,9 @@
         "method": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fs-method",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -307,7 +333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -319,6 +346,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#attr-form-name",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -342,7 +372,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -354,6 +385,9 @@
         "novalidate": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fs-novalidate",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "10"
@@ -379,7 +413,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -391,6 +426,9 @@
         "rel": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#attr-form-rel",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "108"
@@ -412,7 +450,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -424,6 +463,9 @@
         "target": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fs-target",
+            "tags": [
+              "web-features:form"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -447,7 +489,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/frame.json b/html/elements/frame.json
index 4a999363cd255b..33983da6ddbcb3 100644
--- a/html/elements/frame.json
+++ b/html/elements/frame.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +202,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -231,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -265,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/frameset.json b/html/elements/frameset.json
index 713eedc68a1664..3f73f5d49de195 100644
--- a/html/elements/frameset.json
+++ b/html/elements/frameset.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/h1.json b/html/elements/h1.json
index d4c8f199086e2e..081d3f6d665927 100644
--- a/html/elements/h1.json
+++ b/html/elements/h1.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/h2.json b/html/elements/h2.json
index 44e5f206de9b29..ff7f511c11b76e 100644
--- a/html/elements/h2.json
+++ b/html/elements/h2.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/h3.json b/html/elements/h3.json
index 54fcec7046ee85..967e3a7fe0b2a7 100644
--- a/html/elements/h3.json
+++ b/html/elements/h3.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/h4.json b/html/elements/h4.json
index b58dd1eb228f34..8c0aeed736fb5a 100644
--- a/html/elements/h4.json
+++ b/html/elements/h4.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/h5.json b/html/elements/h5.json
index 72b42354492f5e..415e49f2b1ca64 100644
--- a/html/elements/h5.json
+++ b/html/elements/h5.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/h6.json b/html/elements/h6.json
index 3df76dabf3d840..fddbd8f2bd618f 100644
--- a/html/elements/h6.json
+++ b/html/elements/h6.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/Heading_Elements",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements",
+          "tags": [
+            "web-features:headings"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/head.json b/html/elements/head.json
index 8502b261b1807f..08f686b7bf226d 100644
--- a/html/elements/head.json
+++ b/html/elements/head.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/head",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-head-element",
+          "tags": [
+            "web-features:head"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/header.json b/html/elements/header.json
index 52dd044be03ca8..1263cea95e1dd3 100644
--- a/html/elements/header.json
+++ b/html/elements/header.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/header",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-header-element",
+          "tags": [
+            "web-features:header-footer"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/hgroup.json b/html/elements/hgroup.json
index 7d811d84d565c6..9380a70f5bf4ec 100644
--- a/html/elements/hgroup.json
+++ b/html/elements/hgroup.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/hgroup",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-hgroup-element",
+          "tags": [
+            "web-features:hgroup"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -34,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2.2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/hr.json b/html/elements/hr.json
index 3264e8fdb63e09..145f36d543cbaf 100644
--- a/html/elements/hr.json
+++ b/html/elements/hr.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/hr",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-hr-element",
+          "tags": [
+            "web-features:hr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +159,8 @@
                 "notes": "Does not expose the <code>&lt;hr&gt;</code> within the accessibility tree."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -191,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -267,7 +276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/html.json b/html/elements/html.json
index 7e7a347208d2ae..4a56ae33726b9b 100644
--- a/html/elements/html.json
+++ b/html/elements/html.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/html",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-html-element",
+          "tags": [
+            "web-features:html"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/i.json b/html/elements/i.json
index b20c8d2d159ed5..b5ebfaac858c27 100644
--- a/html/elements/i.json
+++ b/html/elements/i.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/i",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-i-element",
+          "tags": [
+            "web-features:i"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/iframe.json b/html/elements/iframe.json
index daf6b105e81ce7..e2a09a90ada2bb 100644
--- a/html/elements/iframe.json
+++ b/html/elements/iframe.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/iframe",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element",
+          "tags": [
+            "web-features:iframe"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -80,6 +84,9 @@
         "allow": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-allow",
+            "tags": [
+              "web-features:iframe"
+            ],
             "support": {
               "chrome": {
                 "version_added": "60"
@@ -101,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +175,8 @@
                 ]
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -200,7 +209,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,7 +242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -244,6 +255,9 @@
         "credentialless": {
           "__compat": {
             "spec_url": "https://wicg.github.io/anonymous-iframe/#attr-iframe-credentialless",
+            "tags": [
+              "web-features:iframe-credentialless"
+            ],
             "support": {
               "chrome": {
                 "version_added": "110"
@@ -265,7 +279,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -298,7 +313,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -345,6 +361,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:iframe"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -404,7 +423,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -521,6 +541,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-name",
+            "tags": [
+              "web-features:iframe"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -556,6 +579,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "51"
@@ -579,7 +605,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -614,7 +641,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -650,7 +678,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -686,7 +715,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -724,7 +754,8 @@
                 "version_added": "4"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -757,7 +788,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -793,7 +825,8 @@
                   "version_added": "4"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -827,7 +860,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -861,7 +895,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -900,7 +935,8 @@
                   "version_added": false
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -938,7 +974,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -972,7 +1009,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -985,6 +1023,9 @@
             "__compat": {
               "description": "<code>sandbox=\"allow-presentation\"</code>",
               "spec_url": "https://html.spec.whatwg.org/multipage/browsers.html#attr-iframe-sandbox-allow-presentation",
+              "tags": [
+                "web-features:presentation-api"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "53"
@@ -1008,7 +1049,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1047,7 +1089,8 @@
                   "notes": "Safari blocks script execution without <code>allow-scripts</code> even if <code>allow-same-origin</code> is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution."
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1083,7 +1126,8 @@
                   "version_added": "4"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1116,7 +1160,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1150,7 +1195,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1184,7 +1230,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1218,7 +1265,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1266,6 +1314,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-src",
+            "tags": [
+              "web-features:iframe"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1289,7 +1340,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1301,6 +1353,9 @@
         "srcdoc": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-srcdoc",
+            "tags": [
+              "web-features:iframe-srcdoc"
+            ],
             "support": {
               "chrome": {
                 "version_added": "20"
@@ -1324,7 +1379,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1336,6 +1392,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:iframe"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
diff --git a/html/elements/img.json b/html/elements/img.json
index ff9f86f62bc1e9..dfa93a6898c159 100644
--- a/html/elements/img.json
+++ b/html/elements/img.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/img",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-img-element",
+          "tags": [
+            "web-features:img"
+          ],
           "support": {
             "chrome": [
               {
@@ -52,7 +55,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,7 +90,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,6 +103,9 @@
         "alt": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-alt",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -121,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +174,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -198,7 +208,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -233,7 +244,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,6 +257,9 @@
         "crossorigin": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-crossorigin",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "13"
@@ -268,7 +283,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -281,6 +297,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/img#decoding",
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-decoding",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "65"
@@ -304,7 +323,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -326,23 +346,30 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false
+                "version_added": "127",
+                "flags": [
+                  {
+                    "type": "preference",
+                    "name": "network.fetchpriority.enabled",
+                    "value_to_set": "true"
+                  }
+                ],
+                "impl_url": "https://bugzil.la/1797715"
               },
               "firefox_android": "mirror",
               "ie": {
                 "version_added": false
               },
               "oculus": "mirror",
-              "opera": {
-                "version_added": false
-              },
+              "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
                 "version_added": "17.2"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -354,6 +381,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -377,7 +407,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -412,7 +443,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -424,6 +456,9 @@
         "ismap": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-ismap",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -447,7 +482,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -483,7 +519,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -518,7 +555,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -553,7 +591,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -565,6 +604,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "51"
@@ -588,7 +630,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -623,7 +666,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -659,7 +703,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -695,7 +740,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -731,7 +777,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -767,7 +814,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -780,6 +828,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-src",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -803,7 +854,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -838,7 +890,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -850,6 +903,9 @@
         "usemap": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#attr-hyperlink-usemap",
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -873,7 +929,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -907,7 +964,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -943,7 +1001,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -955,6 +1014,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:img"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -978,7 +1040,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input.json b/html/elements/input.json
index 36f16bada3008f..a0d7ee3c8656e4 100644
--- a/html/elements/input.json
+++ b/html/elements/input.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -74,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,7 +115,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +156,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,7 +197,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +241,8 @@
                 "version_added": "10"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -276,7 +282,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -317,7 +324,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -357,7 +365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -397,7 +406,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -439,7 +449,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -481,7 +492,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -523,7 +535,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -567,7 +580,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -609,7 +623,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -651,7 +666,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4.4.3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -695,7 +711,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -735,7 +752,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -779,7 +797,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -815,7 +834,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -849,7 +869,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -891,7 +912,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -931,7 +953,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -975,7 +998,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1017,7 +1041,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1054,7 +1079,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1091,7 +1117,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1131,7 +1158,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1175,7 +1203,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1216,7 +1245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1256,7 +1286,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1300,7 +1331,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1339,7 +1371,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/button.json b/html/elements/input/button.json
index a5f25f3f7413f3..e079bb84b627df 100644
--- a/html/elements/input/button.json
+++ b/html/elements/input/button.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/checkbox.json b/html/elements/input/checkbox.json
index a55d81498672fe..15f40d636c1621 100644
--- a/html/elements/input/checkbox.json
+++ b/html/elements/input/checkbox.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/color.json b/html/elements/input/color.json
index 9942e977f71f5b..af69b95b301c8f 100644
--- a/html/elements/input/color.json
+++ b/html/elements/input/color.json
@@ -38,7 +38,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/date.json b/html/elements/input/date.json
index 807bd050acd145..ce6ed3b2936e92 100644
--- a/html/elements/input/date.json
+++ b/html/elements/input/date.json
@@ -36,7 +36,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/datetime-local.json b/html/elements/input/datetime-local.json
index 255e52ae61a080..be37e359a1ad36 100644
--- a/html/elements/input/datetime-local.json
+++ b/html/elements/input/datetime-local.json
@@ -40,7 +40,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/email.json b/html/elements/input/email.json
index df0f4f4a04c8a1..ee82f66a96f1ec 100644
--- a/html/elements/input/email.json
+++ b/html/elements/input/email.json
@@ -41,7 +41,8 @@
                 ]
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/file.json b/html/elements/input/file.json
index 8c27b00b0a8028..a89408097aa2a7 100644
--- a/html/elements/input/file.json
+++ b/html/elements/input/file.json
@@ -37,7 +37,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/hidden.json b/html/elements/input/hidden.json
index f204b8a68c6345..c324add6f1dba1 100644
--- a/html/elements/input/hidden.json
+++ b/html/elements/input/hidden.json
@@ -32,7 +32,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/image.json b/html/elements/input/image.json
index 18230d75c3a311..1bf538aa393562 100644
--- a/html/elements/input/image.json
+++ b/html/elements/input/image.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/month.json b/html/elements/input/month.json
index 9a863b31f4a3e7..1fddd018141f18 100644
--- a/html/elements/input/month.json
+++ b/html/elements/input/month.json
@@ -38,7 +38,8 @@
                 "version_added": "≤11.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/number.json b/html/elements/input/number.json
index ca944ca0d0ec86..8fea30245daec3 100644
--- a/html/elements/input/number.json
+++ b/html/elements/input/number.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/password.json b/html/elements/input/password.json
index 87b54669c6af3a..e3f9fb313239d5 100644
--- a/html/elements/input/password.json
+++ b/html/elements/input/password.json
@@ -32,7 +32,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -64,7 +65,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/html/elements/input/radio.json b/html/elements/input/radio.json
index 1e8301c702992b..d551e671357e17 100644
--- a/html/elements/input/radio.json
+++ b/html/elements/input/radio.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/range.json b/html/elements/input/range.json
index e74137d412f80d..dbf666169d3986 100644
--- a/html/elements/input/range.json
+++ b/html/elements/input/range.json
@@ -50,7 +50,8 @@
                   "partial_implementation": true,
                   "notes": "Pre-Chromium Android WebView recognizes the <code>range</code> type, but doesn't implement a range-specific control."
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -84,7 +85,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -159,7 +161,8 @@
                   }
                 ],
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/html/elements/input/reset.json b/html/elements/input/reset.json
index 049adfb6e1319f..b01b1ca98cc5d7 100644
--- a/html/elements/input/reset.json
+++ b/html/elements/input/reset.json
@@ -31,7 +31,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/search.json b/html/elements/input/search.json
index 72f741241d7646..a9377d13842cd2 100644
--- a/html/elements/input/search.json
+++ b/html/elements/input/search.json
@@ -35,7 +35,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/submit.json b/html/elements/input/submit.json
index 8aa161d40faf5a..b6d3fd625a2184 100644
--- a/html/elements/input/submit.json
+++ b/html/elements/input/submit.json
@@ -31,7 +31,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/tel.json b/html/elements/input/tel.json
index ff1101fab5f055..f7860dc199bf92 100644
--- a/html/elements/input/tel.json
+++ b/html/elements/input/tel.json
@@ -42,7 +42,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/text.json b/html/elements/input/text.json
index 7d3d1c9fd96cd9..e0853fa97f3609 100644
--- a/html/elements/input/text.json
+++ b/html/elements/input/text.json
@@ -30,7 +30,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/time.json b/html/elements/input/time.json
index bc47bb23af7e6b..a945d1fa6032a2 100644
--- a/html/elements/input/time.json
+++ b/html/elements/input/time.json
@@ -36,7 +36,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/url.json b/html/elements/input/url.json
index 8cd19db47e0fbe..41432a947cac5f 100644
--- a/html/elements/input/url.json
+++ b/html/elements/input/url.json
@@ -32,7 +32,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/input/week.json b/html/elements/input/week.json
index a57de8b661964e..c0a5fd6318593e 100644
--- a/html/elements/input/week.json
+++ b/html/elements/input/week.json
@@ -36,7 +36,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/ins.json b/html/elements/ins.json
index 2100b37b09413a..bdb29d5c4c9e2a 100644
--- a/html/elements/ins.json
+++ b/html/elements/ins.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/ins",
           "spec_url": "https://html.spec.whatwg.org/multipage/edits.html#the-ins-element",
+          "tags": [
+            "web-features:ins"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -38,6 +42,9 @@
         },
         "cite": {
           "__compat": {
+            "tags": [
+              "web-features:ins"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -72,6 +79,9 @@
         },
         "datetime": {
           "__compat": {
+            "tags": [
+              "web-features:ins"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
diff --git a/html/elements/kbd.json b/html/elements/kbd.json
index cc0a049e8e6e8e..a89515908a738a 100644
--- a/html/elements/kbd.json
+++ b/html/elements/kbd.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/kbd",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-kbd-element",
+          "tags": [
+            "web-features:kbd"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/label.json b/html/elements/label.json
index 3cf531217ec49e..31458aa4031a21 100644
--- a/html/elements/label.json
+++ b/html/elements/label.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/label",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#the-label-element",
+          "tags": [
+            "web-features:label"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/for",
             "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#attr-label-for",
+            "tags": [
+              "web-features:label"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -63,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/legend.json b/html/elements/legend.json
index 487fa387b3be1f..d10a766a30e435 100644
--- a/html/elements/legend.json
+++ b/html/elements/legend.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/legend",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-legend-element",
+          "tags": [
+            "web-features:fieldset"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/li.json b/html/elements/li.json
index 4bccce2a5c3aa8..7784986c777b71 100644
--- a/html/elements/li.json
+++ b/html/elements/li.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/li",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-li-element",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +75,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -83,6 +88,9 @@
         "value": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#attr-li-value",
+            "tags": [
+              "web-features:list-elements"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -110,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/link.json b/html/elements/link.json
index 54ddbfb8db81d3..3106be3b39c218 100644
--- a/html/elements/link.json
+++ b/html/elements/link.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/link",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-link-element",
+          "tags": [
+            "web-features:link"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -43,6 +47,9 @@
         "as": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-as",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "50"
@@ -66,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -143,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -155,6 +165,9 @@
         "crossorigin": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-crossorigin",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "34"
@@ -179,7 +192,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -191,6 +205,9 @@
         "disabled": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-disabled",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1",
@@ -222,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -244,23 +262,30 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false
+                "version_added": "127",
+                "flags": [
+                  {
+                    "type": "preference",
+                    "name": "network.fetchpriority.enabled",
+                    "value_to_set": "true"
+                  }
+                ],
+                "impl_url": "https://bugzil.la/1797715"
               },
               "firefox_android": "mirror",
               "ie": {
                 "version_added": false
               },
               "oculus": "mirror",
-              "opera": {
-                "version_added": false
-              },
+              "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
                 "version_added": "17.2"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -272,6 +297,9 @@
         "href": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-href",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -299,7 +327,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -311,6 +340,9 @@
         "hreflang": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-hreflang",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -338,7 +370,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -374,7 +407,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -410,7 +444,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -426,6 +461,9 @@
               "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-integrity",
               "https://w3c.github.io/webappsec-subresource-integrity/#the-integrity-attribute"
             ],
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "45"
@@ -449,7 +487,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -461,6 +500,9 @@
         "media": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-media",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -488,7 +530,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -500,6 +543,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "51"
@@ -523,7 +569,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -558,7 +605,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -594,7 +642,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -630,7 +679,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -644,6 +694,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/rel",
             "spec_url": "https://html.spec.whatwg.org/multipage/links.html#linkTypes",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -712,7 +765,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -749,7 +803,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -784,7 +839,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -810,7 +866,10 @@
                 },
                 "firefox": {
                   "version_added": "2",
-                  "notes": "Before Firefox 83, the <code>crossorigin</code> attribute is not supported for <code>rel=\"icon\"</code>."
+                  "notes": [
+                    "Before Firefox 83, the <code>crossorigin</code> attribute is not supported for <code>rel=\"icon\"</code>.",
+                    "The <code>media</code> attribute is not supported for <code>rel=\"icon\"</code>, see <a href='https://bugzil.la/1603885'>bug 1603885</a>."
+                  ]
                 },
                 "firefox_android": {
                   "version_added": "4"
@@ -839,7 +898,8 @@
                 },
                 "webview_android": {
                   "version_added": "38"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -878,7 +938,8 @@
                   "version_added": "11.3"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -918,7 +979,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -956,7 +1018,8 @@
                 "samsunginternet_android": {
                   "version_added": "4.0"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1005,7 +1068,8 @@
                   "version_added": "1.5",
                   "notes": "Requires secure context"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1050,7 +1114,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1092,7 +1157,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1135,7 +1201,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1178,7 +1245,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1221,7 +1289,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1264,7 +1333,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1299,7 +1369,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1336,7 +1407,8 @@
                 "samsunginternet_android": {
                   "version_added": "1.5"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1376,7 +1448,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1388,6 +1461,9 @@
         "sizes": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-sizes",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "≤80"
@@ -1410,7 +1486,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1449,7 +1526,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1461,6 +1539,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-link-type",
+            "tags": [
+              "web-features:link"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -1488,7 +1569,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/main.json b/html/elements/main.json
index a4b92d80aa4056..55ddcb311b921e 100644
--- a/html/elements/main.json
+++ b/html/elements/main.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/main",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-main-element",
+          "tags": [
+            "web-features:main"
+          ],
           "support": {
             "chrome": {
               "version_added": "26"
@@ -30,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/map.json b/html/elements/map.json
index 8eff2c6d11bce6..2e9d1b5a96f93d 100644
--- a/html/elements/map.json
+++ b/html/elements/map.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/map",
           "spec_url": "https://html.spec.whatwg.org/multipage/image-maps.html#the-map-element",
+          "tags": [
+            "web-features:image-maps"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -44,6 +48,9 @@
         },
         "name": {
           "__compat": {
+            "tags": [
+              "web-features:image-maps"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -67,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/mark.json b/html/elements/mark.json
index e32b6df42448c0..5e9b3d1794fd7f 100644
--- a/html/elements/mark.json
+++ b/html/elements/mark.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/mark",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-mark-element",
+          "tags": [
+            "web-features:mark"
+          ],
           "support": {
             "chrome": {
               "version_added": "7"
@@ -30,7 +33,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/marquee.json b/html/elements/marquee.json
index 34a06b99771383..904e6ee7bc3550 100644
--- a/html/elements/marquee.json
+++ b/html/elements/marquee.json
@@ -39,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -114,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -190,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -224,7 +229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -258,7 +264,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +303,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -334,7 +342,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -368,7 +377,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -402,7 +412,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -440,7 +451,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/menu.json b/html/elements/menu.json
index 15d6b2fe6ec99b..277d0a1f46df3f 100644
--- a/html/elements/menu.json
+++ b/html/elements/menu.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/menu",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-menu-element",
+          "tags": [
+            "web-features:menu"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -34,7 +37,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/meta.json b/html/elements/meta.json
index 0e126d26219bb2..4ec92941d1bcd3 100644
--- a/html/elements/meta.json
+++ b/html/elements/meta.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/meta",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-meta-element",
+          "tags": [
+            "web-features:meta"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -43,6 +47,9 @@
         "charset": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-charset",
+            "tags": [
+              "web-features:meta"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -66,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -78,6 +86,9 @@
         "content": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-content",
+            "tags": [
+              "web-features:meta"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -105,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -117,6 +129,9 @@
         "http-equiv": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv",
+            "tags": [
+              "web-features:meta"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -144,7 +159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -154,6 +170,7 @@
           },
           "content-language": {
             "__compat": {
+              "description": "http-equiv=\"content-language\"",
               "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-keyword-content-language",
               "support": {
                 "chrome": {
@@ -178,7 +195,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -189,6 +207,7 @@
           },
           "content-security-policy": {
             "__compat": {
+              "description": "http-equiv=\"content-security-policy\"",
               "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-keyword-content-security-policy",
               "support": {
                 "chrome": {
@@ -213,7 +232,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -224,6 +244,7 @@
           },
           "content-type": {
             "__compat": {
+              "description": "http-equiv=\"content-type\"",
               "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-keyword-content-type",
               "support": {
                 "chrome": {
@@ -248,7 +269,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -259,7 +281,11 @@
           },
           "refresh": {
             "__compat": {
+              "description": "http-equiv=\"refresh\"",
               "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-keyword-refresh",
+              "tags": [
+                "web-features:meta"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "1"
@@ -304,6 +330,9 @@
               "https://html.spec.whatwg.org/multipage/semantics.html#standard-metadata-names",
               "https://w3c.github.io/webappsec-referrer-policy/#referrer-policy-delivery-meta"
             ],
+            "tags": [
+              "web-features:meta"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -331,7 +360,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -368,7 +398,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -380,6 +411,9 @@
           "referrer": {
             "__compat": {
               "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#meta-referrer",
+              "tags": [
+                "web-features:meta"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "17",
@@ -409,7 +443,8 @@
                   "version_added": "12"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -464,7 +499,8 @@
                 },
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -504,7 +540,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/meter.json b/html/elements/meter.json
index 72949c8196dbb6..9fbf202045785a 100644
--- a/html/elements/meter.json
+++ b/html/elements/meter.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,7 +123,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +168,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +213,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -252,7 +257,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -295,7 +301,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/nav.json b/html/elements/nav.json
index 387f576f6b4d63..143c63bf11499f 100644
--- a/html/elements/nav.json
+++ b/html/elements/nav.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/nav",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-nav-element",
+          "tags": [
+            "web-features:nav"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/nobr.json b/html/elements/nobr.json
index ccdc8094ac37be..559849d17e92f0 100644
--- a/html/elements/nobr.json
+++ b/html/elements/nobr.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/noembed.json b/html/elements/noembed.json
index 6330093e415f04..17f18932b2ef1f 100644
--- a/html/elements/noembed.json
+++ b/html/elements/noembed.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/noframes.json b/html/elements/noframes.json
index 4af956b112cfe7..c4ae0eff6ef5d0 100644
--- a/html/elements/noframes.json
+++ b/html/elements/noframes.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/noscript.json b/html/elements/noscript.json
index 41bb6f20ecc421..990d749ae9addf 100644
--- a/html/elements/noscript.json
+++ b/html/elements/noscript.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/noscript",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#the-noscript-element",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/object.json b/html/elements/object.json
index 76dd163c323811..d81f96b672e354 100644
--- a/html/elements/object.json
+++ b/html/elements/object.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/object",
           "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element",
+          "tags": [
+            "web-features:object"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -132,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -202,7 +210,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -214,6 +223,9 @@
         "data": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-object-data",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -237,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -272,7 +285,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,6 +298,9 @@
         "form": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fae-form",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -307,7 +324,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -319,6 +337,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -342,7 +363,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -354,6 +376,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-object-name",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -377,7 +402,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -412,7 +438,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -446,7 +473,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -458,6 +486,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-object-type",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -481,7 +512,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -516,7 +548,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -528,6 +561,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:object"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -551,7 +587,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/ol.json b/html/elements/ol.json
index b8777adc00a302..bc836678ba108b 100644
--- a/html/elements/ol.json
+++ b/html/elements/ol.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/ol",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-ol-element",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,6 +77,9 @@
         "reversed": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#attr-ol-reversed",
+            "tags": [
+              "web-features:list-elements"
+            ],
             "support": {
               "chrome": {
                 "version_added": "18"
@@ -96,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -108,6 +116,9 @@
         "start": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#attr-ol-start",
+            "tags": [
+              "web-features:list-elements"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -131,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,6 +155,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#attr-ol-type",
+            "tags": [
+              "web-features:list-elements"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -166,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/optgroup.json b/html/elements/optgroup.json
index 4617a39989d10b..9d8bcb687b4d21 100644
--- a/html/elements/optgroup.json
+++ b/html/elements/optgroup.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/optgroup",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-optgroup-element",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-optgroup-disabled",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -63,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -75,6 +83,9 @@
         "label": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-optgroup-label",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -98,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/option.json b/html/elements/option.json
index cbbdaa166e25b3..b36edac8613070 100644
--- a/html/elements/option.json
+++ b/html/elements/option.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/option",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-option-element",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-option-disabled",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -63,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -75,6 +83,9 @@
         "label": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-option-label",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -106,7 +117,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,6 +130,9 @@
         "selected": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-option-selected",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -141,7 +156,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,6 +169,9 @@
         "value": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-option-value",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -176,7 +195,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/output.json b/html/elements/output.json
index e5abbe8065ca8a..ec9167724a5d66 100644
--- a/html/elements/output.json
+++ b/html/elements/output.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/output",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-output-element",
+          "tags": [
+            "web-features:output"
+          ],
           "support": {
             "chrome": {
               "version_added": "10"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -44,6 +48,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/for",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-output-for",
+            "tags": [
+              "web-features:output"
+            ],
             "support": {
               "chrome": {
                 "version_added": "10"
@@ -71,7 +78,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -83,6 +91,9 @@
         "form": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fae-form",
+            "tags": [
+              "web-features:output"
+            ],
             "support": {
               "chrome": {
                 "version_added": "10"
@@ -110,7 +121,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -122,6 +134,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-name",
+            "tags": [
+              "web-features:output"
+            ],
             "support": {
               "chrome": {
                 "version_added": "10"
@@ -149,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/p.json b/html/elements/p.json
index 7fe6fd59d86fc3..8e7dd0442b546f 100644
--- a/html/elements/p.json
+++ b/html/elements/p.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/p",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-p-element",
+          "tags": [
+            "web-features:p"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/param.json b/html/elements/param.json
index 68084781eb2eec..854363e9bdd89a 100644
--- a/html/elements/param.json
+++ b/html/elements/param.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/picture.json b/html/elements/picture.json
index 496a741ed96a68..462f1e0ed06a59 100644
--- a/html/elements/picture.json
+++ b/html/elements/picture.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/picture",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-picture-element",
+          "tags": [
+            "web-features:picture"
+          ],
           "support": {
             "chrome": {
               "version_added": "38"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/plaintext.json b/html/elements/plaintext.json
index 79b62f08d37f2e..ca25e1ab80d1c9 100644
--- a/html/elements/plaintext.json
+++ b/html/elements/plaintext.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/portal.json b/html/elements/portal.json
index 570ce50f1e3319..bcf11ac9cc0f01 100644
--- a/html/elements/portal.json
+++ b/html/elements/portal.json
@@ -51,7 +51,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/html/elements/pre.json b/html/elements/pre.json
index f3cb43ecb2cbea..5006df18114d4e 100644
--- a/html/elements/pre.json
+++ b/html/elements/pre.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/pre",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element",
+          "tags": [
+            "web-features:pre"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/progress.json b/html/elements/progress.json
index bee1b241c44e7b..9093003e6fe723 100644
--- a/html/elements/progress.json
+++ b/html/elements/progress.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/progress",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-progress-element",
+          "tags": [
+            "web-features:progress"
+          ],
           "support": {
             "chrome": {
               "version_added": "6"
@@ -39,7 +42,8 @@
               "notes": "Safari on iOS does not support indeterminate progress bars (they are rendered like 0%-completed progress bars)."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -51,6 +55,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/max",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-progress-max",
+            "tags": [
+              "web-features:progress"
+            ],
             "support": {
               "chrome": {
                 "version_added": "6"
@@ -80,7 +87,8 @@
                 "version_added": "7"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,6 +100,9 @@
         "value": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-progress-value",
+            "tags": [
+              "web-features:progress"
+            ],
             "support": {
               "chrome": {
                 "version_added": "6"
@@ -121,7 +132,8 @@
                 "version_added": "7"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/q.json b/html/elements/q.json
index 28f415ef0c4d17..738178a797e3b9 100644
--- a/html/elements/q.json
+++ b/html/elements/q.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/q",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-q-element",
+          "tags": [
+            "web-features:q"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -39,6 +43,9 @@
         "cite": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#attr-q-cite",
+            "tags": [
+              "web-features:q"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -62,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/rb.json b/html/elements/rb.json
index 4332ac7a13ab67..7f76f3a67c3e70 100644
--- a/html/elements/rb.json
+++ b/html/elements/rb.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/rp.json b/html/elements/rp.json
index 7121c76843ffd4..ad65ee46c369d8 100644
--- a/html/elements/rp.json
+++ b/html/elements/rp.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/rp",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-rp-element",
+          "tags": [
+            "web-features:ruby"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/rt.json b/html/elements/rt.json
index d7137319ba6b31..a3ad715836a2fb 100644
--- a/html/elements/rt.json
+++ b/html/elements/rt.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/rt",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-rt-element",
+          "tags": [
+            "web-features:ruby"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/rtc.json b/html/elements/rtc.json
index ae18b8546b74c4..3cadd3f6d1821a 100644
--- a/html/elements/rtc.json
+++ b/html/elements/rtc.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/ruby.json b/html/elements/ruby.json
index 0038fc08b545bd..80643fe4e9afa3 100644
--- a/html/elements/ruby.json
+++ b/html/elements/ruby.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/ruby",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-ruby-element",
+          "tags": [
+            "web-features:ruby"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/s.json b/html/elements/s.json
index 5b46e8608e82b7..2e85720ba96d57 100644
--- a/html/elements/s.json
+++ b/html/elements/s.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/s",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-s-element",
+          "tags": [
+            "web-features:s"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/samp.json b/html/elements/samp.json
index 7db3bad990a040..d9a0cb7ea211bd 100644
--- a/html/elements/samp.json
+++ b/html/elements/samp.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/samp",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-samp-element",
+          "tags": [
+            "web-features:samp"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/script.json b/html/elements/script.json
index 686809cdfa268b..961bc943452f2a 100644
--- a/html/elements/script.json
+++ b/html/elements/script.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/script",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#the-script-element",
+          "tags": [
+            "web-features:script"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -35,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -46,6 +50,9 @@
         "async": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-async",
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -69,7 +76,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -140,7 +149,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -152,6 +162,9 @@
         "crossorigin": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-crossorigin",
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "19"
@@ -180,7 +193,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -192,6 +206,9 @@
         "defer": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-defer",
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1",
@@ -220,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,23 +260,30 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false
+                "version_added": "127",
+                "flags": [
+                  {
+                    "type": "preference",
+                    "name": "network.fetchpriority.enabled",
+                    "value_to_set": "true"
+                  }
+                ],
+                "impl_url": "https://bugzil.la/1797715"
               },
               "firefox_android": "mirror",
               "ie": {
                 "version_added": false
               },
               "oculus": "mirror",
-              "opera": {
-                "version_added": false
-              },
+              "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
                 "version_added": "17.2"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,6 +298,9 @@
               "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-integrity",
               "https://w3c.github.io/webappsec-subresource-integrity/#the-integrity-attribute"
             ],
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "45"
@@ -296,7 +324,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -334,7 +363,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -346,6 +376,9 @@
         "referrerpolicy": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-referrerpolicy",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "70"
@@ -369,7 +402,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -403,7 +437,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -438,7 +473,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -473,7 +509,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -486,6 +523,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-src",
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -509,7 +549,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -521,6 +562,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#attr-script-type",
+            "tags": [
+              "web-features:script"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -544,7 +588,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -580,7 +625,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -615,7 +661,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -663,7 +710,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -713,7 +761,10 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": {
+                  "version_added": false
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -745,7 +796,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -780,7 +834,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -815,7 +872,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -850,7 +910,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -883,7 +946,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -916,7 +982,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -951,7 +1020,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -993,7 +1065,10 @@
                     "samsunginternet_android": {
                       "version_added": false
                     },
-                    "webview_android": "mirror"
+                    "webview_android": {
+                      "version_added": false
+                    },
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": true,
@@ -1027,7 +1102,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -1062,7 +1140,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
@@ -1095,7 +1176,10 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": true,
diff --git a/html/elements/search.json b/html/elements/search.json
index 814839bbffd333..6735f7e0978d05 100644
--- a/html/elements/search.json
+++ b/html/elements/search.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/section.json b/html/elements/section.json
index c835a100d43287..d043240efa1504 100644
--- a/html/elements/section.json
+++ b/html/elements/section.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/section",
           "spec_url": "https://html.spec.whatwg.org/multipage/sections.html#the-section-element",
+          "tags": [
+            "web-features:section"
+          ],
           "support": {
             "chrome": {
               "version_added": "5"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/select.json b/html/elements/select.json
index 60741d21d8eee6..606416839d8c18 100644
--- a/html/elements/select.json
+++ b/html/elements/select.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/select",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-select-element",
+          "tags": [
+            "web-features:select"
+          ],
           "support": {
             "chrome": {
               "version_added": "1",
@@ -44,7 +47,8 @@
                 "In the Browser app for Android 4.1 (and possibly later versions), there is a bug where the menu indicator triangle on the side of a <code>&lt;select&gt;</code> will not be displayed if a <code>background</code>, <code>border</code>, or <code>border-radius</code> style is applied to the <code>&lt;select&gt;</code>.",
                 "<code>border-radius</code> on <code>&lt;select&gt;</code> elements is ignored unless <code>-webkit-appearance</code> is overridden to an appropriate value."
               ]
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,6 +111,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-disabled",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -129,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,6 +150,9 @@
         "form": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fae-form",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -164,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,6 +189,9 @@
         "hr_in_select": {
           "__compat": {
             "description": "<code>&lt;hr&gt;</code> in <code>&lt;select&gt;</code>",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "119",
@@ -212,7 +228,8 @@
                 "notes": "Does not expose the <code>&lt;hr&gt;</code> within the accessibility tree."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -225,6 +242,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/multiple",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-select-multiple",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -248,7 +268,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -260,6 +281,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-name",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -283,7 +307,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,6 +321,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/required",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-select-required",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "10"
@@ -319,7 +347,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -332,6 +361,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/size",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-select-size",
+            "tags": [
+              "web-features:select"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -359,7 +391,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/slot.json b/html/elements/slot.json
index d40b4f73a37180..ef42dafa4006d7 100644
--- a/html/elements/slot.json
+++ b/html/elements/slot.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/small.json b/html/elements/small.json
index 695f3ca0f1ccd3..18acea9cd96554 100644
--- a/html/elements/small.json
+++ b/html/elements/small.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/small",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-small-element",
+          "tags": [
+            "web-features:small"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/source.json b/html/elements/source.json
index 3dc4592e0eb317..d5bde9bd89b032 100644
--- a/html/elements/source.json
+++ b/html/elements/source.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/source",
           "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element",
+          "tags": [
+            "web-features:source"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -29,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -40,6 +44,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:source"
+            ],
             "support": {
               "chrome": {
                 "version_added": "90"
@@ -61,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -73,6 +81,9 @@
         "media": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-source-media",
+            "tags": [
+              "web-features:source"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -98,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,6 +165,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-source-src",
+            "tags": [
+              "web-features:source"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -175,7 +191,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -217,7 +234,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,6 +247,9 @@
         "type": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content.html#attr-source-type",
+            "tags": [
+              "web-features:source"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -252,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -264,6 +286,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:source"
+            ],
             "support": {
               "chrome": {
                 "version_added": "90"
@@ -285,7 +310,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/span.json b/html/elements/span.json
index c0705e70ac6264..cc021f951f0788 100644
--- a/html/elements/span.json
+++ b/html/elements/span.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/span",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-span-element",
+          "tags": [
+            "web-features:span"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/strike.json b/html/elements/strike.json
index c7cb1721d6b2f2..ce03a5ed5680d6 100644
--- a/html/elements/strike.json
+++ b/html/elements/strike.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/strong.json b/html/elements/strong.json
index bab61323c118d6..6edb76a102bf26 100644
--- a/html/elements/strong.json
+++ b/html/elements/strong.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/strong",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-strong-element",
+          "tags": [
+            "web-features:strong"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/style.json b/html/elements/style.json
index 6c50816c66ec1c..0584cf22eda623 100644
--- a/html/elements/style.json
+++ b/html/elements/style.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/style",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-style-element",
+          "tags": [
+            "web-features:style"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -81,6 +86,9 @@
         "media": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-style-media",
+            "tags": [
+              "web-features:style"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -108,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/sub.json b/html/elements/sub.json
index fdffdff5965fc7..38601517e8e536 100644
--- a/html/elements/sub.json
+++ b/html/elements/sub.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/sub",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sub-and-sup-elements",
+          "tags": [
+            "web-features:sub-sup"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/summary.json b/html/elements/summary.json
index fc5189ef30f53b..67b23d686c9d8b 100644
--- a/html/elements/summary.json
+++ b/html/elements/summary.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/sup.json b/html/elements/sup.json
index e9b267cbcc6aed..36238ec69e3349 100644
--- a/html/elements/sup.json
+++ b/html/elements/sup.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/sup",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sub-and-sup-elements",
+          "tags": [
+            "web-features:sub-sup"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/table.json b/html/elements/table.json
index b54ee784dc8023..6b6c22a999b26d 100644
--- a/html/elements/table.json
+++ b/html/elements/table.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/table",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-table-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +112,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +151,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -183,7 +190,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -259,7 +268,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -297,7 +307,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -335,7 +346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -373,7 +385,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/tbody.json b/html/elements/tbody.json
index b08a357ff80b31..11143c399dc32d 100644
--- a/html/elements/tbody.json
+++ b/html/elements/tbody.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/tbody",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-tbody-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/td.json b/html/elements/td.json
index 3961e57c5e3b69..4e32dc3c4dde99 100644
--- a/html/elements/td.json
+++ b/html/elements/td.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/td",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-td-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +140,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +251,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -253,6 +263,9 @@
         },
         "colspan": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -276,7 +289,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,6 +301,9 @@
         },
         "headers": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -310,7 +327,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -321,6 +339,9 @@
         },
         "rowspan": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -344,7 +365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -376,7 +398,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -411,7 +434,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -446,7 +470,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -480,7 +505,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/template.json b/html/elements/template.json
index 118f73598570aa..cf6c5c57e8fa90 100644
--- a/html/elements/template.json
+++ b/html/elements/template.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/elements/textarea.json b/html/elements/textarea.json
index 790ada8cd5c533..847d77155f81d8 100644
--- a/html/elements/textarea.json
+++ b/html/elements/textarea.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/textarea",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#the-textarea-element",
+          "tags": [
+            "web-features:textarea"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -40,7 +43,8 @@
               "notes": "Unlike other major browsers, a default style of <code>opacity: 0.4</code> is applied to disabled <code>&lt;textarea&gt;</code> elements."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -51,6 +55,9 @@
         "autocomplete": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-autocomplete",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "66"
@@ -72,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +112,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -141,7 +150,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -175,7 +185,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -188,6 +199,9 @@
         "cols": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-cols",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -215,7 +229,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -257,7 +272,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,6 +286,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/disabled",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-disabled",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -297,7 +316,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -309,6 +329,9 @@
         "form": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fae-form",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -336,7 +359,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -349,6 +373,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/maxlength",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-maxlength",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "4"
@@ -379,7 +406,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -392,6 +420,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/minlength",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-minlength",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "40"
@@ -415,7 +446,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -427,6 +459,9 @@
         "name": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-name",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -454,7 +489,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -466,6 +502,9 @@
         "placeholder": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-placeholder",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "4"
@@ -497,7 +536,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -508,6 +548,9 @@
           "line_breaks": {
             "__compat": {
               "description": "Line breaks in <code>placeholder</code>",
+              "tags": [
+                "web-features:textarea"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "36"
@@ -527,11 +570,12 @@
                 "opera": "mirror",
                 "opera_android": "mirror",
                 "safari": {
-                  "version_added": false
+                  "version_added": "16"
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -545,6 +589,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Attributes/readonly",
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-readonly",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -572,7 +619,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -584,6 +632,9 @@
         "required": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-required",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "4"
@@ -615,7 +666,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -627,6 +679,9 @@
         "rows": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-rows",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -654,7 +709,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -665,6 +721,9 @@
         },
         "spellcheck": {
           "__compat": {
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "9"
@@ -688,7 +747,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -700,6 +760,9 @@
         "wrap": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/form-elements.html#attr-textarea-wrap",
+            "tags": [
+              "web-features:textarea"
+            ],
             "support": {
               "chrome": {
                 "version_added": "16"
@@ -729,7 +792,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -740,6 +804,9 @@
           "hard": {
             "__compat": {
               "description": "<code>hard</code> value",
+              "tags": [
+                "web-features:textarea"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "16"
@@ -763,7 +830,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/html/elements/tfoot.json b/html/elements/tfoot.json
index d1c917c1360656..9e66624842be9c 100644
--- a/html/elements/tfoot.json
+++ b/html/elements/tfoot.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/tfoot",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-tfoot-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/th.json b/html/elements/th.json
index 1cdc10e5c7f22b..e86fe67bab5bec 100644
--- a/html/elements/th.json
+++ b/html/elements/th.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/th",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-th-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -42,6 +46,9 @@
         },
         "abbr": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -65,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +108,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +254,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -253,6 +266,9 @@
         },
         "colspan": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -276,7 +292,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,6 +304,9 @@
         },
         "headers": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -310,7 +330,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -321,6 +342,9 @@
         },
         "rowspan": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -344,7 +368,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -376,7 +401,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -388,6 +414,9 @@
         },
         "scope": {
           "__compat": {
+            "tags": [
+              "web-features:table"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -411,7 +440,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -446,7 +476,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -480,7 +511,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/thead.json b/html/elements/thead.json
index 43a3c0c9bfdf7b..ef049c80149db5 100644
--- a/html/elements/thead.json
+++ b/html/elements/thead.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/thead",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-thead-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -33,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +110,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -210,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/time.json b/html/elements/time.json
index 0eaf74b110f30a..7d918a9ff4a779 100644
--- a/html/elements/time.json
+++ b/html/elements/time.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/time",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-time-element",
+          "tags": [
+            "web-features:time"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -46,7 +49,8 @@
               "version_added": "4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -56,6 +60,9 @@
         },
         "datetime": {
           "__compat": {
+            "tags": [
+              "web-features:time"
+            ],
             "support": {
               "chrome": {
                 "version_added": "62"
@@ -97,7 +104,8 @@
                 "version_added": "4"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/title.json b/html/elements/title.json
index f91e37e084e842..27fdc38ad06c1d 100644
--- a/html/elements/title.json
+++ b/html/elements/title.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/title",
           "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-title-element",
+          "tags": [
+            "web-features:title"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/tr.json b/html/elements/tr.json
index 4b3bc14bdd6bb5..c32b92863ac2aa 100644
--- a/html/elements/tr.json
+++ b/html/elements/tr.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/tr",
           "spec_url": "https://html.spec.whatwg.org/multipage/tables.html#the-tr-element",
+          "tags": [
+            "web-features:table"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -32,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -174,7 +181,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/track.json b/html/elements/track.json
index 9e0bd14034cd7c..7bb828c7a8760a 100644
--- a/html/elements/track.json
+++ b/html/elements/track.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/track",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#the-track-element",
+          "tags": [
+            "web-features:text-tracks"
+          ],
           "support": {
             "chrome": {
               "version_added": "23"
@@ -35,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -46,6 +50,9 @@
         "default": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-default",
+            "tags": [
+              "web-features:text-tracks"
+            ],
             "support": {
               "chrome": {
                 "version_added": "23"
@@ -73,7 +80,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -85,6 +93,9 @@
         "kind": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-kind",
+            "tags": [
+              "web-features:text-tracks"
+            ],
             "support": {
               "chrome": {
                 "version_added": "23"
@@ -110,7 +121,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +157,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -158,6 +171,9 @@
         "label": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-label",
+            "tags": [
+              "web-features:text-tracks"
+            ],
             "support": {
               "chrome": {
                 "version_added": "23"
@@ -183,7 +199,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,6 +212,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-src",
+            "tags": [
+              "web-features:text-tracks"
+            ],
             "support": {
               "chrome": {
                 "version_added": "23"
@@ -227,7 +247,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -239,6 +260,9 @@
         "srclang": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-srclang",
+            "tags": [
+              "web-features:text-tracks"
+            ],
             "support": {
               "chrome": {
                 "version_added": "23"
@@ -264,7 +288,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/tt.json b/html/elements/tt.json
index 9badc4bd096a62..1172dae0549ecc 100644
--- a/html/elements/tt.json
+++ b/html/elements/tt.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/u.json b/html/elements/u.json
index 4e745c5c85b1d6..a0fc28f84fb469 100644
--- a/html/elements/u.json
+++ b/html/elements/u.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/u",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-u-element",
+          "tags": [
+            "web-features:u"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -31,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/ul.json b/html/elements/ul.json
index dca0c0aea2e67d..b6dec7b21adab6 100644
--- a/html/elements/ul.json
+++ b/html/elements/ul.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/ul",
           "spec_url": "https://html.spec.whatwg.org/multipage/grouping-content.html#the-ul-element",
+          "tags": [
+            "web-features:list-elements"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/var.json b/html/elements/var.json
index 1598782850d5a7..6092fb44317c9d 100644
--- a/html/elements/var.json
+++ b/html/elements/var.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/var",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-var-element",
+          "tags": [
+            "web-features:var"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -28,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/video.json b/html/elements/video.json
index 7a7fd3c546856d..303f9bb9c2c152 100644
--- a/html/elements/video.json
+++ b/html/elements/video.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/video",
           "spec_url": "https://html.spec.whatwg.org/multipage/media.html#the-video-element",
+          "tags": [
+            "web-features:video"
+          ],
           "support": {
             "chrome": {
               "version_added": "3"
@@ -32,7 +35,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -79,6 +84,9 @@
         "autoplay": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-autoplay",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -106,7 +114,8 @@
                 "version_added": "10"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,6 +127,9 @@
         "controls": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-controls",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -145,7 +157,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,6 +207,9 @@
         "crossorigin": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-crossorigin",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "33"
@@ -224,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,6 +254,9 @@
         "disablepictureinpicture": {
           "__compat": {
             "spec_url": "https://w3c.github.io/picture-in-picture/#dom-htmlvideoelement-disablepictureinpicture",
+            "tags": [
+              "web-features:picture-in-picture"
+            ],
             "support": {
               "chrome": {
                 "version_added": "69"
@@ -271,7 +292,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -311,7 +333,8 @@
               "webview_android": {
                 "version_added": false,
                 "impl_url": "https://crbug.com/521319"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -323,6 +346,9 @@
         "height": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-height",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -350,7 +376,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -362,6 +389,9 @@
         "loop": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-loop",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -389,7 +419,8 @@
                 "version_added": "6"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -401,6 +432,9 @@
         "muted": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-muted",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "30"
@@ -424,7 +458,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -463,7 +498,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -475,6 +511,9 @@
         "poster": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-video-poster",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -502,7 +541,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -514,6 +554,9 @@
         "preload": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-preload",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3",
@@ -540,7 +583,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -552,6 +596,9 @@
         "src": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-media-src",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -579,7 +626,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -591,6 +639,9 @@
         "width": {
           "__compat": {
             "spec_url": "https://html.spec.whatwg.org/multipage/embedded-content-other.html#attr-dim-width",
+            "tags": [
+              "web-features:video"
+            ],
             "support": {
               "chrome": {
                 "version_added": "3"
@@ -618,7 +669,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/html/elements/wbr.json b/html/elements/wbr.json
index 79e1995b40080b..ce65480adb3097 100644
--- a/html/elements/wbr.json
+++ b/html/elements/wbr.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/wbr",
           "spec_url": "https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-wbr-element",
+          "tags": [
+            "web-features:wbr"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -33,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/elements/xmp.json b/html/elements/xmp.json
index d8ec8edb332aa2..c6337f371fd98b 100644
--- a/html/elements/xmp.json
+++ b/html/elements/xmp.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/global_attributes.json b/html/global_attributes.json
index 5207e27f2e24e2..2af3bf15611c08 100644
--- a/html/global_attributes.json
+++ b/html/global_attributes.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -104,7 +106,8 @@
               "version_added": "5"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -207,7 +210,8 @@
                 "partial_implementation": true,
                 "notes": "Supported for the <code>&lt;button&gt;</code>, <code>&lt;input&gt;</code>, <code>&lt;select&gt;</code>, and <code>&lt;textarea&gt;</code> elements."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -243,7 +247,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -281,7 +286,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -315,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -353,7 +360,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -387,7 +395,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -425,7 +434,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -463,7 +473,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,7 +508,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -536,7 +548,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -577,7 +590,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -622,7 +636,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -659,7 +674,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -704,7 +720,8 @@
               "notes": "Before iOS 13, <code>inputmode=\"none\"</code> had no effect."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -713,112 +730,6 @@
           }
         }
       },
-      "invoketarget": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "enable-experimental-web-platform-features",
-                  "value_to_set": "enabled"
-                }
-              ]
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.element.invokers.enabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "InvokerAttributesEnabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "invokeaction": {
-        "__compat": {
-          "support": {
-            "chrome": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "enable-experimental-web-platform-features",
-                  "value_to_set": "enabled"
-                }
-              ]
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.element.invokers.enabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": "preview",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "InvokerAttributesEnabled",
-                  "value_to_set": "true"
-                }
-              ]
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "is": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/is",
@@ -848,7 +759,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -884,7 +796,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -918,7 +831,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -951,7 +865,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -986,7 +901,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1023,7 +939,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1065,7 +982,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1109,7 +1027,8 @@
               "version_added": "9.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1145,7 +1064,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1184,7 +1104,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1220,7 +1141,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1254,7 +1176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1292,7 +1215,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1326,7 +1250,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -1334,6 +1259,45 @@
             "deprecated": false
           }
         }
+      },
+      "writingsuggestions": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/writingsuggestions",
+          "spec_url": "https://html.spec.whatwg.org/multipage/interaction.html#writing-suggestions",
+          "tags": [
+            "web-features:writingsuggestions"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "124"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false,
+              "impl_url": "https://bugzil.la/1871621"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": "18"
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
       }
     }
   }
diff --git a/html/manifest/background_color.json b/html/manifest/background_color.json
index c3b7640833fe6b..7395f853bb8e46 100644
--- a/html/manifest/background_color.json
+++ b/html/manifest/background_color.json
@@ -7,15 +7,10 @@
           "spec_url": "https://w3c.github.io/manifest/#background_color-member",
           "support": {
             "chrome": {
-              "version_added": null
-            },
-            "chrome_android": {
-              "version_added": "46",
-              "notes": "Does not support <code>lang</code> or <code>scope</code>."
-            },
-            "edge": {
-              "version_added": "79"
+              "version_added": "46"
             },
+            "chrome_android": "mirror",
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },
@@ -33,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/categories.json b/html/manifest/categories.json
deleted file mode 100644
index 8eda999bb075c3..00000000000000
--- a/html/manifest/categories.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "html": {
-    "manifest": {
-      "categories": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/Manifest/categories",
-          "spec_url": "https://w3c.github.io/manifest-app-info/#categories-member",
-          "support": {
-            "chrome": {
-              "version_added": null
-            },
-            "chrome_android": {
-              "version_added": "88"
-            },
-            "edge": {
-              "version_added": "88"
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": {
-              "version_added": null
-            },
-            "safari": {
-              "version_added": "17.4",
-              "notes": "Only available on macOS Sonoma (14) and above."
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/html/manifest/description.json b/html/manifest/description.json
index f84aadb7d184ac..bdaa6c6d06e130 100644
--- a/html/manifest/description.json
+++ b/html/manifest/description.json
@@ -7,14 +7,10 @@
           "spec_url": "https://w3c.github.io/manifest-app-info/#description-member",
           "support": {
             "chrome": {
-              "version_added": null
-            },
-            "chrome_android": {
-              "version_added": "88"
-            },
-            "edge": {
               "version_added": "88"
             },
+            "chrome_android": "mirror",
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },
@@ -27,17 +23,14 @@
             },
             "oculus": "mirror",
             "opera": "mirror",
-            "opera_android": {
-              "version_added": null
-            },
+            "opera_android": "mirror",
             "safari": {
               "version_added": false
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/display.json b/html/manifest/display.json
index a06893998fbbd6..446bc944d70ab4 100644
--- a/html/manifest/display.json
+++ b/html/manifest/display.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17",
               "partial_implementation": true,
@@ -38,7 +34,8 @@
               "notes": "Does not support <code>fullscreen</code> or <code>minimal-ui</code>."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/display_override.json b/html/manifest/display_override.json
index 082d46a2a79096..4062004cd991ed 100644
--- a/html/manifest/display_override.json
+++ b/html/manifest/display_override.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -38,6 +39,7 @@
         },
         "tabbed": {
           "__compat": {
+            "description": "<code>tabbed</code> display mode",
             "spec_url": "https://wicg.github.io/manifest-incubations/#dfn-tabbed",
             "support": {
               "chrome": {
@@ -62,7 +64,45 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "window-controls-overlay": {
+          "__compat": {
+            "description": "<code>window-controls-overlay</code> display mode",
+            "spec_url": "https://wicg.github.io/window-controls-overlay/#addition-of-new-window-controls-overlay-display-mode",
+            "support": {
+              "chrome": {
+                "version_added": "105"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": {
+                "version_added": false
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/manifest/file_handlers.json b/html/manifest/file_handlers.json
index c15c2347e5e87a..c57ef2eef111dc 100644
--- a/html/manifest/file_handlers.json
+++ b/html/manifest/file_handlers.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/html/manifest/icons.json b/html/manifest/icons.json
index 05975b438a5b44..01570a469b173f 100644
--- a/html/manifest/icons.json
+++ b/html/manifest/icons.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17",
               "notes": "Only used when no <code>apple-touch-icon</code> is present with <code>\"purpose\": \"any\"</code> or no <code>\"purpose\"</code> key."
@@ -36,7 +32,8 @@
               "notes": "Only used when no <code>apple-touch-icon</code> is present with <code>\"purpose\": \"any\"</code> or no <code>\"purpose\"</code> key."
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/id.json b/html/manifest/id.json
index bb5982797aceb7..74d4ae4e5efa53 100644
--- a/html/manifest/id.json
+++ b/html/manifest/id.json
@@ -31,7 +31,8 @@
               "version_added": "16.4"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/launch_handler.json b/html/manifest/launch_handler.json
index c76e05cd212aea..fc34444e61f64d 100644
--- a/html/manifest/launch_handler.json
+++ b/html/manifest/launch_handler.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/manifest/name.json b/html/manifest/name.json
index ea0131879dd918..2bc8a1dd624142 100644
--- a/html/manifest/name.json
+++ b/html/manifest/name.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17"
             },
@@ -34,7 +30,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/note_taking.json b/html/manifest/note_taking.json
index ee00757e5ed590..5f40dac5773770 100644
--- a/html/manifest/note_taking.json
+++ b/html/manifest/note_taking.json
@@ -20,16 +20,15 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
+            "opera": "mirror",
             "opera_android": "mirror",
             "safari": {
               "version_added": false
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -56,16 +55,15 @@
                 "version_added": false
               },
               "oculus": "mirror",
-              "opera": {
-                "version_added": null
-              },
+              "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
                 "version_added": false
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/manifest/orientation.json b/html/manifest/orientation.json
index a39c6fe25671bf..fb914700bfa2c3 100644
--- a/html/manifest/orientation.json
+++ b/html/manifest/orientation.json
@@ -21,20 +21,15 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": false
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/prefer_related_applications.json b/html/manifest/prefer_related_applications.json
index 556a630b7b3ae6..868b8f606c8f7d 100644
--- a/html/manifest/prefer_related_applications.json
+++ b/html/manifest/prefer_related_applications.json
@@ -7,14 +7,12 @@
           "spec_url": "https://w3c.github.io/manifest/#prefer_related_applications-member",
           "support": {
             "chrome": {
-              "version_added": null
+              "version_added": false
             },
             "chrome_android": {
               "version_added": "44"
             },
-            "edge": {
-              "version_added": "79"
-            },
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },
@@ -27,19 +25,14 @@
             },
             "oculus": "mirror",
             "opera": "mirror",
-            "opera_android": {
-              "version_added": null
-            },
+            "opera_android": "mirror",
             "safari": {
               "version_added": false
             },
             "safari_ios": "mirror",
-            "samsunginternet_android": {
-              "version_added": null
-            },
-            "webview_android": {
-              "version_added": null
-            }
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/html/manifest/protocol_handlers.json b/html/manifest/protocol_handlers.json
index d6928d32108ec8..eddc131727dbfd 100644
--- a/html/manifest/protocol_handlers.json
+++ b/html/manifest/protocol_handlers.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -66,7 +67,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -105,7 +107,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/manifest/related_applications.json b/html/manifest/related_applications.json
index 0e1c22744a32ed..5c36eab4147ad7 100644
--- a/html/manifest/related_applications.json
+++ b/html/manifest/related_applications.json
@@ -7,14 +7,12 @@
           "spec_url": "https://w3c.github.io/manifest/#related_applications-member",
           "support": {
             "chrome": {
-              "version_added": null
+              "version_added": false
             },
             "chrome_android": {
               "version_added": "44"
             },
-            "edge": {
-              "version_added": "79"
-            },
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },
@@ -27,19 +25,14 @@
             },
             "oculus": "mirror",
             "opera": "mirror",
-            "opera_android": {
-              "version_added": null
-            },
+            "opera_android": "mirror",
             "safari": {
               "version_added": false
             },
             "safari_ios": "mirror",
-            "samsunginternet_android": {
-              "version_added": null
-            },
-            "webview_android": {
-              "version_added": null
-            }
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/html/manifest/scope.json b/html/manifest/scope.json
index 7573d031e42e27..8ab6c869beafdd 100644
--- a/html/manifest/scope.json
+++ b/html/manifest/scope.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17"
             },
@@ -34,9 +30,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/screenshots.json b/html/manifest/screenshots.json
deleted file mode 100644
index 6d2ba5ae1eb610..00000000000000
--- a/html/manifest/screenshots.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "html": {
-    "manifest": {
-      "screenshots": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/Manifest/screenshots",
-          "spec_url": "https://w3c.github.io/manifest-app-info/#screenshots-member",
-          "support": {
-            "chrome": {
-              "version_added": null
-            },
-            "chrome_android": {
-              "version_added": "88"
-            },
-            "edge": {
-              "version_added": "88"
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": {
-              "version_added": null
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false,
-              "impl_url": "https://webkit.org/b/222356"
-            },
-            "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/html/manifest/serviceworker.json b/html/manifest/serviceworker.json
index b72982aacbda71..9bb41854cd674c 100644
--- a/html/manifest/serviceworker.json
+++ b/html/manifest/serviceworker.json
@@ -27,7 +27,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -60,7 +61,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -94,7 +96,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -128,7 +131,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/html/manifest/share_target.json b/html/manifest/share_target.json
index 49bb8a051aea7e..73f881f0b0d01f 100644
--- a/html/manifest/share_target.json
+++ b/html/manifest/share_target.json
@@ -37,7 +37,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/html/manifest/short_name.json b/html/manifest/short_name.json
index 2730335ec43dff..d76e84774807f5 100644
--- a/html/manifest/short_name.json
+++ b/html/manifest/short_name.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17"
             },
@@ -34,7 +30,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/shortcuts.json b/html/manifest/shortcuts.json
index c73fc268ac8850..839ffc9778ffe7 100644
--- a/html/manifest/shortcuts.json
+++ b/html/manifest/shortcuts.json
@@ -39,7 +39,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/start_url.json b/html/manifest/start_url.json
index 505bc59d958878..f62341929d342b 100644
--- a/html/manifest/start_url.json
+++ b/html/manifest/start_url.json
@@ -21,12 +21,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": null
-            },
-            "opera_android": {
-              "version_added": null
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": "17"
             },
@@ -34,9 +30,8 @@
               "version_added": "11.3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": {
-              "version_added": null
-            }
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/html/manifest/theme_color.json b/html/manifest/theme_color.json
index 4de3972eddd0b7..f505fc1d856e17 100644
--- a/html/manifest/theme_color.json
+++ b/html/manifest/theme_color.json
@@ -30,7 +30,8 @@
               "version_added": "15"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/data-url.json b/http/data-url.json
index d69cddd412aa23..ed204f32864732 100644
--- a/http/data-url.json
+++ b/http/data-url.json
@@ -3,7 +3,7 @@
     "data-url": {
       "__compat": {
         "description": "data URL scheme",
-        "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Basics_of_HTTP/Data_URLs",
+        "mdn_url": "https://developer.mozilla.org/docs/Web/URI/Schemes/data",
         "spec_url": "https://www.rfc-editor.org/rfc/rfc2397#section-2",
         "support": {
           "chrome": {
@@ -35,7 +35,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -71,7 +72,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -104,7 +106,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -141,7 +144,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -178,7 +182,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Accept-CH.json b/http/headers/Accept-CH.json
index 0212fcf3ec7ceb..8d9c356ba0477c 100644
--- a/http/headers/Accept-CH.json
+++ b/http/headers/Accept-CH.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -166,7 +170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -232,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -265,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -298,7 +306,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -331,7 +340,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -364,7 +374,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -399,7 +410,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -434,7 +446,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Accept-Encoding.json b/http/headers/Accept-Encoding.json
index 73b09ef07caad4..709d4f73ea3dad 100644
--- a/http/headers/Accept-Encoding.json
+++ b/http/headers/Accept-Encoding.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Accept-Language.json b/http/headers/Accept-Language.json
index a795e51296ebb1..5b2697871e1227 100644
--- a/http/headers/Accept-Language.json
+++ b/http/headers/Accept-Language.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Accept-Ranges.json b/http/headers/Accept-Ranges.json
index e480d9d46a3131..2707f6d319fdf2 100644
--- a/http/headers/Accept-Ranges.json
+++ b/http/headers/Accept-Ranges.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Accept.json b/http/headers/Accept.json
index 9bfe2e70bee4fa..b032523a23f362 100644
--- a/http/headers/Accept.json
+++ b/http/headers/Accept.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Access-Control-Allow-Credentials.json b/http/headers/Access-Control-Allow-Credentials.json
index 349568eb87dc23..e3e9943ce060c6 100644
--- a/http/headers/Access-Control-Allow-Credentials.json
+++ b/http/headers/Access-Control-Allow-Credentials.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Access-Control-Allow-Headers.json b/http/headers/Access-Control-Allow-Headers.json
index 93f3c8135920de..e20c3679354117 100644
--- a/http/headers/Access-Control-Allow-Headers.json
+++ b/http/headers/Access-Control-Allow-Headers.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,7 +74,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -108,7 +110,8 @@
               "samsunginternet_android": {
                 "version_added": "8.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Access-Control-Allow-Methods.json b/http/headers/Access-Control-Allow-Methods.json
index 32dc66dd8febbe..2aba6b6ff8ce83 100644
--- a/http/headers/Access-Control-Allow-Methods.json
+++ b/http/headers/Access-Control-Allow-Methods.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               "samsunginternet_android": {
                 "version_added": "8.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Access-Control-Allow-Origin.json b/http/headers/Access-Control-Allow-Origin.json
index 454a844f78d398..ed8e6f1dff6498 100644
--- a/http/headers/Access-Control-Allow-Origin.json
+++ b/http/headers/Access-Control-Allow-Origin.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Access-Control-Expose-Headers.json b/http/headers/Access-Control-Expose-Headers.json
index 5b73353a5b5b95..6c551df4e650b9 100644
--- a/http/headers/Access-Control-Expose-Headers.json
+++ b/http/headers/Access-Control-Expose-Headers.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -66,7 +67,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Access-Control-Max-Age.json b/http/headers/Access-Control-Max-Age.json
index c4bbeb3f7ee56f..6f2dabdcfe2ef2 100644
--- a/http/headers/Access-Control-Max-Age.json
+++ b/http/headers/Access-Control-Max-Age.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Access-Control-Request-Headers.json b/http/headers/Access-Control-Request-Headers.json
index 5fc114d9dd5716..51c362c85740b7 100644
--- a/http/headers/Access-Control-Request-Headers.json
+++ b/http/headers/Access-Control-Request-Headers.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Access-Control-Request-Method.json b/http/headers/Access-Control-Request-Method.json
index 3994af9dd49c80..75656c59d15b5a 100644
--- a/http/headers/Access-Control-Request-Method.json
+++ b/http/headers/Access-Control-Request-Method.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "2"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Age.json b/http/headers/Age.json
index 05efc615ceff11..4f63bc51bf7357 100644
--- a/http/headers/Age.json
+++ b/http/headers/Age.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Alt-Svc.json b/http/headers/Alt-Svc.json
index 6bb99e3f3db57d..72a6c268e7a2af 100644
--- a/http/headers/Alt-Svc.json
+++ b/http/headers/Alt-Svc.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Attribution-Reporting-Eligible.json b/http/headers/Attribution-Reporting-Eligible.json
index 4831c8d4118421..015146958a9a73 100644
--- a/http/headers/Attribution-Reporting-Eligible.json
+++ b/http/headers/Attribution-Reporting-Eligible.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Attribution-Reporting-Register-Source.json b/http/headers/Attribution-Reporting-Register-Source.json
index 0ef4b79c659093..9c95a4a3b01d8a 100644
--- a/http/headers/Attribution-Reporting-Register-Source.json
+++ b/http/headers/Attribution-Reporting-Register-Source.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Attribution-Reporting-Register-Trigger.json b/http/headers/Attribution-Reporting-Register-Trigger.json
index 905a89bef27171..b2fc82bd6f488a 100644
--- a/http/headers/Attribution-Reporting-Register-Trigger.json
+++ b/http/headers/Attribution-Reporting-Register-Trigger.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Attribution-Reporting-Support.json b/http/headers/Attribution-Reporting-Support.json
index 98c91c3bf8722b..fb26722e753c75 100644
--- a/http/headers/Attribution-Reporting-Support.json
+++ b/http/headers/Attribution-Reporting-Support.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Authorization.json b/http/headers/Authorization.json
index 7c8261e66bcefa..2d0b8ad3228b22 100644
--- a/http/headers/Authorization.json
+++ b/http/headers/Authorization.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -164,7 +168,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -266,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Cache-Control.json b/http/headers/Cache-Control.json
index b23a1505b16481..003a23f6b1e0d4 100644
--- a/http/headers/Cache-Control.json
+++ b/http/headers/Cache-Control.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Clear-Site-Data.json b/http/headers/Clear-Site-Data.json
index 4ef72dabf913f7..60fbf30a4b30c0 100644
--- a/http/headers/Clear-Site-Data.json
+++ b/http/headers/Clear-Site-Data.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -172,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -246,7 +252,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Connection.json b/http/headers/Connection.json
index 5f370218067860..4a1b0e95cc7004 100644
--- a/http/headers/Connection.json
+++ b/http/headers/Connection.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-DPR.json b/http/headers/Content-DPR.json
index 2646733d333138..0b91ff64ed4c2b 100644
--- a/http/headers/Content-DPR.json
+++ b/http/headers/Content-DPR.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Disposition.json b/http/headers/Content-Disposition.json
index 05b3fae70f23b4..6c3d82f0ab270a 100644
--- a/http/headers/Content-Disposition.json
+++ b/http/headers/Content-Disposition.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Encoding.json b/http/headers/Content-Encoding.json
index 4c15d7a6145ae5..7075e78b832b23 100644
--- a/http/headers/Content-Encoding.json
+++ b/http/headers/Content-Encoding.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
                 "version_added": "11"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Content-Language.json b/http/headers/Content-Language.json
index 2967e16d8d1098..a59f7701ec16d8 100644
--- a/http/headers/Content-Language.json
+++ b/http/headers/Content-Language.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Length.json b/http/headers/Content-Length.json
index ab24064dcd6a4e..7050f63ac66b46 100644
--- a/http/headers/Content-Length.json
+++ b/http/headers/Content-Length.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Content-Location.json b/http/headers/Content-Location.json
index 0ecc4033c6922c..d4470ba9cc7aac 100644
--- a/http/headers/Content-Location.json
+++ b/http/headers/Content-Location.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Range.json b/http/headers/Content-Range.json
index add0dab3efc5c9..918cbb729ae4e5 100644
--- a/http/headers/Content-Range.json
+++ b/http/headers/Content-Range.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Security-Policy-Report-Only.json b/http/headers/Content-Security-Policy-Report-Only.json
index e5b0a565b99dda..51c1743bdeecae 100644
--- a/http/headers/Content-Security-Policy-Report-Only.json
+++ b/http/headers/Content-Security-Policy-Report-Only.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Content-Security-Policy.json b/http/headers/Content-Security-Policy.json
index cd26d3b364a21a..ebd90fd15a9514 100644
--- a/http/headers/Content-Security-Policy.json
+++ b/http/headers/Content-Security-Policy.json
@@ -52,7 +52,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -86,7 +87,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -122,7 +124,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +162,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +201,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +247,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -278,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -312,7 +319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -348,7 +356,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -386,7 +395,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -418,7 +428,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -475,7 +486,8 @@
                 "version_added": "9.3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -511,7 +523,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -547,7 +560,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -581,7 +595,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -617,7 +632,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -652,7 +668,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -688,7 +705,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -724,7 +742,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -760,7 +779,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -780,7 +800,14 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": false
+                "version_added": "130",
+                "flags": [
+                  {
+                    "type": "preference",
+                    "name": "dom.reporting.enabled",
+                    "value_to_set": "true"
+                  }
+                ]
               },
               "firefox_android": "mirror",
               "ie": {
@@ -794,7 +821,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -830,7 +858,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -867,7 +896,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -903,7 +933,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -939,7 +970,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -974,7 +1006,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1008,7 +1041,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +1075,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1076,7 +1111,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1110,7 +1146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1146,7 +1183,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1182,7 +1220,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1216,7 +1255,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1250,7 +1290,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1289,7 +1330,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1323,7 +1365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1359,7 +1402,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1398,7 +1442,8 @@
               "samsunginternet_android": {
                 "version_added": "7.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Content-Type.json b/http/headers/Content-Type.json
index c5402aeb8458b0..b46ad2bd47431f 100644
--- a/http/headers/Content-Type.json
+++ b/http/headers/Content-Type.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Cookie.json b/http/headers/Cookie.json
index 50da10bbdaf340..d41b8bd0ba263e 100644
--- a/http/headers/Cookie.json
+++ b/http/headers/Cookie.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Critical-CH.json b/http/headers/Critical-CH.json
index 56060aead229b6..11ba697d3af440 100644
--- a/http/headers/Critical-CH.json
+++ b/http/headers/Critical-CH.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Cross-Origin-Embedder-Policy.json b/http/headers/Cross-Origin-Embedder-Policy.json
index f5be7ad7c4dd21..76b568aeaa936d 100644
--- a/http/headers/Cross-Origin-Embedder-Policy.json
+++ b/http/headers/Cross-Origin-Embedder-Policy.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "86"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Cross-Origin-Opener-Policy.json b/http/headers/Cross-Origin-Opener-Policy.json
index 6c54751f9db830..3993a699df8b0d 100644
--- a/http/headers/Cross-Origin-Opener-Policy.json
+++ b/http/headers/Cross-Origin-Opener-Policy.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Cross-Origin-Resource-Policy.json b/http/headers/Cross-Origin-Resource-Policy.json
index 2fbe7979dee6b2..dde69ebf5ef3da 100644
--- a/http/headers/Cross-Origin-Resource-Policy.json
+++ b/http/headers/Cross-Origin-Resource-Policy.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": {
               "version_added": "11.0"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/DNT.json b/http/headers/DNT.json
index 7eff04fcccdec7..0041e649786c15 100644
--- a/http/headers/DNT.json
+++ b/http/headers/DNT.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/DPR.json b/http/headers/DPR.json
index e6754bd14d13f4..baa8243651f489 100644
--- a/http/headers/DPR.json
+++ b/http/headers/DPR.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Date.json b/http/headers/Date.json
index 72e39befaf79b4..74908d8a33ec58 100644
--- a/http/headers/Date.json
+++ b/http/headers/Date.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Device-Memory.json b/http/headers/Device-Memory.json
index 14e313bedd67c9..1a0180a768df73 100644
--- a/http/headers/Device-Memory.json
+++ b/http/headers/Device-Memory.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Downlink.json b/http/headers/Downlink.json
index 3635ef857b14da..bb79a58104833b 100644
--- a/http/headers/Downlink.json
+++ b/http/headers/Downlink.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/ECT.json b/http/headers/ECT.json
index 25ffe5d6786a40..c51970dbabbfa8 100644
--- a/http/headers/ECT.json
+++ b/http/headers/ECT.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/ETag.json b/http/headers/ETag.json
index 15d01214d02e64..f3912685102b77 100644
--- a/http/headers/ETag.json
+++ b/http/headers/ETag.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Early-Data.json b/http/headers/Early-Data.json
index 72579cdb5e5c90..b5f68546849a76 100644
--- a/http/headers/Early-Data.json
+++ b/http/headers/Early-Data.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Expect-CT.json b/http/headers/Expect-CT.json
index bc06c027de755e..3105b35f9965fb 100644
--- a/http/headers/Expect-CT.json
+++ b/http/headers/Expect-CT.json
@@ -34,12 +34,13 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
             "standard_track": true,
-            "deprecated": false
+            "deprecated": true
           }
         }
       }
diff --git a/http/headers/Expires.json b/http/headers/Expires.json
index a40e8ed7ca0f38..58587753c4ff04 100644
--- a/http/headers/Expires.json
+++ b/http/headers/Expires.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/From.json b/http/headers/From.json
index 1dfcfedeaea0c9..86a499e506a8fb 100644
--- a/http/headers/From.json
+++ b/http/headers/From.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Host.json b/http/headers/Host.json
index 983511006a9fc9..ec467a5d921a22 100644
--- a/http/headers/Host.json
+++ b/http/headers/Host.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/If-Match.json b/http/headers/If-Match.json
index 27fa6bf56cb654..4c461d29cb286a 100644
--- a/http/headers/If-Match.json
+++ b/http/headers/If-Match.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/If-Modified-Since.json b/http/headers/If-Modified-Since.json
index d9a791b9fb7697..8c37000f8eefad 100644
--- a/http/headers/If-Modified-Since.json
+++ b/http/headers/If-Modified-Since.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/If-None-Match.json b/http/headers/If-None-Match.json
index ea9807d03212f2..9f81b4d19a1ef3 100644
--- a/http/headers/If-None-Match.json
+++ b/http/headers/If-None-Match.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/If-Range.json b/http/headers/If-Range.json
index c7045210897f29..73ea98355f363c 100644
--- a/http/headers/If-Range.json
+++ b/http/headers/If-Range.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/If-Unmodified-Since.json b/http/headers/If-Unmodified-Since.json
index 057343a495c6c7..bacc963f2b37bf 100644
--- a/http/headers/If-Unmodified-Since.json
+++ b/http/headers/If-Unmodified-Since.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Keep-Alive.json b/http/headers/Keep-Alive.json
index 9bc79b58a90e91..05d9eb8a81e3a7 100644
--- a/http/headers/Keep-Alive.json
+++ b/http/headers/Keep-Alive.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Last-Modified.json b/http/headers/Last-Modified.json
index 498fe8a4b38b0d..87177c719120e9 100644
--- a/http/headers/Last-Modified.json
+++ b/http/headers/Last-Modified.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Link.json b/http/headers/Link.json
index ef20455f0273bb..952896b74d3d9b 100644
--- a/http/headers/Link.json
+++ b/http/headers/Link.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Location.json b/http/headers/Location.json
index d717951f1477e1..f0e45cb82b7f2c 100644
--- a/http/headers/Location.json
+++ b/http/headers/Location.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/NEL.json b/http/headers/NEL.json
index 79b1fb596eb28f..87ae5521b53598 100644
--- a/http/headers/NEL.json
+++ b/http/headers/NEL.json
@@ -28,7 +28,8 @@
             "samsunginternet_android": {
               "version_added": "10.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/No-Vary-Search.json b/http/headers/No-Vary-Search.json
index 8a0c5a7f166735..b94f015c3da6d9 100644
--- a/http/headers/No-Vary-Search.json
+++ b/http/headers/No-Vary-Search.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Observe-Browsing-Topics.json b/http/headers/Observe-Browsing-Topics.json
index 1e30cadfe24e90..8202f23526d070 100644
--- a/http/headers/Observe-Browsing-Topics.json
+++ b/http/headers/Observe-Browsing-Topics.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Origin-Agent-Cluster.json b/http/headers/Origin-Agent-Cluster.json
index 1b55d566706679..ed2f0c13ed25da 100644
--- a/http/headers/Origin-Agent-Cluster.json
+++ b/http/headers/Origin-Agent-Cluster.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Origin.json b/http/headers/Origin.json
index ac5679f33eb62e..ad9146fff5047a 100644
--- a/http/headers/Origin.json
+++ b/http/headers/Origin.json
@@ -39,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Permissions-Policy.json b/http/headers/Permissions-Policy.json
index 3c16a15cd19039..e6ab56c1de15f4 100644
--- a/http/headers/Permissions-Policy.json
+++ b/http/headers/Permissions-Policy.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -50,6 +51,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/accelerometer",
             "spec_url": "https://w3c.github.io/sensors/#permissions-policy",
+            "tags": [
+              "web-features:accelerometer"
+            ],
             "support": {
               "chrome": [
                 {
@@ -77,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -131,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -165,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -208,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -242,7 +250,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -275,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -323,7 +333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -362,7 +373,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -395,7 +407,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -439,7 +452,8 @@
                 "version_added": false
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -501,7 +515,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -553,7 +568,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -596,7 +612,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -636,7 +653,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -649,6 +667,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/geolocation",
             "spec_url": "https://w3c.github.io/geolocation/#permissions-policy",
+            "tags": [
+              "web-features:geolocation"
+            ],
             "support": {
               "chrome": [
                 {
@@ -679,7 +700,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -719,7 +741,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -756,7 +779,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -768,7 +792,7 @@
         "identity-credentials-get": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/identity-credentials-get",
-            "spec_url": "https://fedidcg.github.io/FedCM/#permissions-policy-integration",
+            "spec_url": "https://w3c-fedid.github.io/FedCM/#permissions-policy-integration",
             "support": {
               "chrome": {
                 "version_added": "110"
@@ -792,7 +816,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -829,7 +854,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -867,7 +893,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -909,7 +936,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -957,7 +985,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1009,7 +1038,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1022,6 +1052,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/otp-credentials",
             "spec_url": "https://wicg.github.io/web-otp/#sctn-permissions-policy",
+            "tags": [
+              "web-features:web-otp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "93"
@@ -1047,7 +1080,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1095,7 +1129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1145,7 +1180,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1192,7 +1228,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1239,7 +1276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1282,7 +1320,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1316,7 +1355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1356,7 +1396,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1390,7 +1431,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1435,7 +1477,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1485,7 +1528,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1518,7 +1562,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1554,7 +1599,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -1598,7 +1644,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/http/headers/Pragma.json b/http/headers/Pragma.json
index f5826b21e71f50..79eedabd3122a3 100644
--- a/http/headers/Pragma.json
+++ b/http/headers/Pragma.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Priority.json b/http/headers/Priority.json
index 8ed42de9df07dc..471dd322e1132c 100644
--- a/http/headers/Priority.json
+++ b/http/headers/Priority.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Proxy-Authenticate.json b/http/headers/Proxy-Authenticate.json
index 9a241e15eea5bc..1f5d94a8c5ec0d 100644
--- a/http/headers/Proxy-Authenticate.json
+++ b/http/headers/Proxy-Authenticate.json
@@ -30,7 +30,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/RTT.json b/http/headers/RTT.json
index d7d7593e6a10d0..0284b40c267634 100644
--- a/http/headers/RTT.json
+++ b/http/headers/RTT.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Range.json b/http/headers/Range.json
index db4aa4fa7fa3f6..49935543e6329e 100644
--- a/http/headers/Range.json
+++ b/http/headers/Range.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Referer.json b/http/headers/Referer.json
index 8edaed2d022a0e..0a79ef4c9abb6a 100644
--- a/http/headers/Referer.json
+++ b/http/headers/Referer.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Referrer-Policy.json b/http/headers/Referrer-Policy.json
index e8924eb01e94d7..6a4137be198cc0 100644
--- a/http/headers/Referrer-Policy.json
+++ b/http/headers/Referrer-Policy.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Referrer-Policy",
           "spec_url": "https://w3c.github.io/webappsec-referrer-policy/#referrer-policy-header",
+          "tags": [
+            "web-features:referrer-policy"
+          ],
           "support": {
             "chrome": {
               "version_added": "56"
@@ -30,7 +33,8 @@
             "samsunginternet_android": {
               "version_added": "7.2"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -41,6 +45,9 @@
         "default_strict-origin-when-cross-origin": {
           "__compat": {
             "description": "Default policy is <code>strict-origin-when-cross-origin</code>",
+            "tags": [
+              "web-features:referrer-policy"
+            ],
             "support": {
               "chrome": {
                 "version_added": "85"
@@ -62,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +110,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +151,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +189,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -216,7 +227,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -253,7 +265,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -293,7 +306,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Refresh.json b/http/headers/Refresh.json
new file mode 100644
index 00000000000000..7d64bb9178b881
--- /dev/null
+++ b/http/headers/Refresh.json
@@ -0,0 +1,47 @@
+{
+  "http": {
+    "headers": {
+      "Refresh": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Refresh",
+          "spec_url": "https://html.spec.whatwg.org/multipage/document-lifecycle.html#the-refresh-header",
+          "support": {
+            "chrome": {
+              "version_added": "1"
+            },
+            "chrome_android": "mirror",
+            "edge": {
+              "version_added": "12"
+            },
+            "firefox": {
+              "version_added": "1"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": "≤6"
+            },
+            "oculus": "mirror",
+            "opera": {
+              "version_added": "≤12.1"
+            },
+            "opera_android": {
+              "version_added": "≤12.1"
+            },
+            "safari": {
+              "version_added": "1"
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/http/headers/Report-To.json b/http/headers/Report-To.json
index b30143ec505934..b2a6c01658aff9 100644
--- a/http/headers/Report-To.json
+++ b/http/headers/Report-To.json
@@ -3,6 +3,7 @@
     "headers": {
       "Report-To": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Report-To",
           "support": {
             "chrome": {
               "version_added": "70"
@@ -10,7 +11,14 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "130",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
             },
             "firefox_android": "mirror",
             "ie": {
@@ -28,12 +36,13 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
-            "deprecated": false
+            "standard_track": false,
+            "deprecated": true
           }
         }
       }
diff --git a/http/headers/Reporting-Endpoints.json b/http/headers/Reporting-Endpoints.json
new file mode 100644
index 00000000000000..49f044c290efa6
--- /dev/null
+++ b/http/headers/Reporting-Endpoints.json
@@ -0,0 +1,52 @@
+{
+  "http": {
+    "headers": {
+      "Reporting-Endpoints": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Reporting-Endpoints",
+          "spec_url": "https://w3c.github.io/reporting/#header-field-registration",
+          "support": {
+            "chrome": {
+              "version_added": "96"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "130",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "dom.reporting.enabled",
+                  "value_to_set": "true"
+                }
+              ]
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": {
+              "version_added": false
+            },
+            "opera_android": {
+              "version_added": false
+            },
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/http/headers/Retry-After.json b/http/headers/Retry-After.json
index b85f896452c5f5..c91d0174ea3a95 100644
--- a/http/headers/Retry-After.json
+++ b/http/headers/Retry-After.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Save-Data.json b/http/headers/Save-Data.json
index f2a69f07aec201..2adf2e89529a59 100644
--- a/http/headers/Save-Data.json
+++ b/http/headers/Save-Data.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-Browsing-Topics.json b/http/headers/Sec-Browsing-Topics.json
index ed4ede2d6b52d2..8e409b10169e6c 100644
--- a/http/headers/Sec-Browsing-Topics.json
+++ b/http/headers/Sec-Browsing-Topics.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-Prefers-Color-Scheme.json b/http/headers/Sec-CH-Prefers-Color-Scheme.json
index 46012be5550626..50f5999790a9d7 100644
--- a/http/headers/Sec-CH-Prefers-Color-Scheme.json
+++ b/http/headers/Sec-CH-Prefers-Color-Scheme.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-Prefers-Reduced-Motion.json b/http/headers/Sec-CH-Prefers-Reduced-Motion.json
index 1eb4cc5807c73a..b3c8af8cd0f38f 100644
--- a/http/headers/Sec-CH-Prefers-Reduced-Motion.json
+++ b/http/headers/Sec-CH-Prefers-Reduced-Motion.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-Prefers-Reduced-Transparency.json b/http/headers/Sec-CH-Prefers-Reduced-Transparency.json
index 04fcb93d423871..cee7f876882ce8 100644
--- a/http/headers/Sec-CH-Prefers-Reduced-Transparency.json
+++ b/http/headers/Sec-CH-Prefers-Reduced-Transparency.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-Save-Data.json b/http/headers/Sec-CH-Save-Data.json
index c83926dfba838a..f03b5fe338515a 100644
--- a/http/headers/Sec-CH-Save-Data.json
+++ b/http/headers/Sec-CH-Save-Data.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Arch.json b/http/headers/Sec-CH-UA-Arch.json
index a1c69af7076b6e..504a6cb89d9e5e 100644
--- a/http/headers/Sec-CH-UA-Arch.json
+++ b/http/headers/Sec-CH-UA-Arch.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Bitness.json b/http/headers/Sec-CH-UA-Bitness.json
index 2bacf2a4f420ee..2f5c3d1b15bf55 100644
--- a/http/headers/Sec-CH-UA-Bitness.json
+++ b/http/headers/Sec-CH-UA-Bitness.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Full-Version-List.json b/http/headers/Sec-CH-UA-Full-Version-List.json
index d5a42c70bd6976..985a46425a8a50 100644
--- a/http/headers/Sec-CH-UA-Full-Version-List.json
+++ b/http/headers/Sec-CH-UA-Full-Version-List.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Full-Version.json b/http/headers/Sec-CH-UA-Full-Version.json
index 9c45be593877f5..bf95968c0e3cb9 100644
--- a/http/headers/Sec-CH-UA-Full-Version.json
+++ b/http/headers/Sec-CH-UA-Full-Version.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Sec-CH-UA-Mobile.json b/http/headers/Sec-CH-UA-Mobile.json
index db3e726aa155ae..812f1e9a121f7f 100644
--- a/http/headers/Sec-CH-UA-Mobile.json
+++ b/http/headers/Sec-CH-UA-Mobile.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Model.json b/http/headers/Sec-CH-UA-Model.json
index 5fd1d5a11eb386..12c2174162880c 100644
--- a/http/headers/Sec-CH-UA-Model.json
+++ b/http/headers/Sec-CH-UA-Model.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Platform-Version.json b/http/headers/Sec-CH-UA-Platform-Version.json
index fb71b3088331a5..2fff7b82a9a85f 100644
--- a/http/headers/Sec-CH-UA-Platform-Version.json
+++ b/http/headers/Sec-CH-UA-Platform-Version.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA-Platform.json b/http/headers/Sec-CH-UA-Platform.json
index 2ce10b3f634231..7baa69111886c6 100644
--- a/http/headers/Sec-CH-UA-Platform.json
+++ b/http/headers/Sec-CH-UA-Platform.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-CH-UA.json b/http/headers/Sec-CH-UA.json
index e8113c332f970f..3770eab7ffbaf0 100644
--- a/http/headers/Sec-CH-UA.json
+++ b/http/headers/Sec-CH-UA.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-Fetch-Dest.json b/http/headers/Sec-Fetch-Dest.json
index 40ea87122c6fbe..74a48791a76f24 100644
--- a/http/headers/Sec-Fetch-Dest.json
+++ b/http/headers/Sec-Fetch-Dest.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/http/headers/Sec-Fetch-Mode.json b/http/headers/Sec-Fetch-Mode.json
index f3fa73cd7e8515..8fc8d169d5990d 100644
--- a/http/headers/Sec-Fetch-Mode.json
+++ b/http/headers/Sec-Fetch-Mode.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Sec-Fetch-Site.json b/http/headers/Sec-Fetch-Site.json
index af1fe34ba9f094..e3e939c6e7136b 100644
--- a/http/headers/Sec-Fetch-Site.json
+++ b/http/headers/Sec-Fetch-Site.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Sec-Fetch-User.json b/http/headers/Sec-Fetch-User.json
index 47f3327900e94e..fcb257d582c646 100644
--- a/http/headers/Sec-Fetch-User.json
+++ b/http/headers/Sec-Fetch-User.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Sec-GPC.json b/http/headers/Sec-GPC.json
index 55cd72c79edee2..d2ad13a95efc77 100644
--- a/http/headers/Sec-GPC.json
+++ b/http/headers/Sec-GPC.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Sec-Purpose.json b/http/headers/Sec-Purpose.json
index be5c97ee51ef3e..e221475130814e 100644
--- a/http/headers/Sec-Purpose.json
+++ b/http/headers/Sec-Purpose.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Server-Timing.json b/http/headers/Server-Timing.json
index 43910455068b1e..9550c7c55311d3 100644
--- a/http/headers/Server-Timing.json
+++ b/http/headers/Server-Timing.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Server.json b/http/headers/Server.json
index 73e54613db627b..1ee97c15fac205 100644
--- a/http/headers/Server.json
+++ b/http/headers/Server.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Service-Worker-Navigation-Preload.json b/http/headers/Service-Worker-Navigation-Preload.json
index 45b1dc1e63026e..1c68b0ec79a728 100644
--- a/http/headers/Service-Worker-Navigation-Preload.json
+++ b/http/headers/Service-Worker-Navigation-Preload.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Set-Cookie.json b/http/headers/Set-Cookie.json
index 44340f69560fd8..1ebeae0095bd34 100644
--- a/http/headers/Set-Cookie.json
+++ b/http/headers/Set-Cookie.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
                 "version_added": "4"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,7 +124,7 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": "preview"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -137,10 +140,11 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -195,7 +199,8 @@
                 }
               ],
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -233,7 +238,8 @@
                   "version_added": "12.2"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -279,7 +285,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -345,7 +352,8 @@
                     "notes": "Rejects cookies with <code>SameSite=None</code>. See <a href='https://www.chromium.org/updates/same-site/incompatible-clients'>SameSite=None: Known Incompatible Clients</a>."
                   }
                 ],
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -384,7 +392,8 @@
                   "version_added": "12.2"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -430,7 +439,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -472,7 +482,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -506,7 +517,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Set-Login.json b/http/headers/Set-Login.json
index 6a17ea4d4a13ff..76238917b549f0 100644
--- a/http/headers/Set-Login.json
+++ b/http/headers/Set-Login.json
@@ -4,7 +4,7 @@
       "Set-Login": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Login",
-          "spec_url": "https://fedidcg.github.io/FedCM/#login-status-http",
+          "spec_url": "https://w3c-fedid.github.io/FedCM/#login-status-http",
           "support": {
             "chrome": {
               "version_added": "120"
@@ -28,7 +28,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Snapshot-Content-Location.json b/http/headers/Snapshot-Content-Location.json
index af04bded15da37..76ba857e87ed72 100644
--- a/http/headers/Snapshot-Content-Location.json
+++ b/http/headers/Snapshot-Content-Location.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/SourceMap.json b/http/headers/SourceMap.json
index 3c9a8bbc7061d9..9f5a55be85e52c 100644
--- a/http/headers/SourceMap.json
+++ b/http/headers/SourceMap.json
@@ -52,7 +52,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Speculation-Rules.json b/http/headers/Speculation-Rules.json
index 46ec354fe7c0c3..e3b5c7eaa7b10b 100644
--- a/http/headers/Speculation-Rules.json
+++ b/http/headers/Speculation-Rules.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/http/headers/Strict-Transport-Security.json b/http/headers/Strict-Transport-Security.json
index 82b0c7fdd126be..49a41cbec7cf68 100644
--- a/http/headers/Strict-Transport-Security.json
+++ b/http/headers/Strict-Transport-Security.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Supports-Loading-Mode.json b/http/headers/Supports-Loading-Mode.json
index a5e79fe3ba2e11..813a81230f8adf 100644
--- a/http/headers/Supports-Loading-Mode.json
+++ b/http/headers/Supports-Loading-Mode.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/http/headers/TE.json b/http/headers/TE.json
index 60b8f61b6c9fff..d8584b1349c8aa 100644
--- a/http/headers/TE.json
+++ b/http/headers/TE.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Timing-Allow-Origin.json b/http/headers/Timing-Allow-Origin.json
index 5bb4d5b5dbcccb..a888cc19efab3c 100644
--- a/http/headers/Timing-Allow-Origin.json
+++ b/http/headers/Timing-Allow-Origin.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Trailer.json b/http/headers/Trailer.json
index af2b226b208b95..dad0faba0a0b4b 100644
--- a/http/headers/Trailer.json
+++ b/http/headers/Trailer.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Transfer-Encoding.json b/http/headers/Transfer-Encoding.json
index dc4fc592be0170..39594b5f950131 100644
--- a/http/headers/Transfer-Encoding.json
+++ b/http/headers/Transfer-Encoding.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Upgrade-Insecure-Requests.json b/http/headers/Upgrade-Insecure-Requests.json
index 00c59eb78a5715..6068a611eae306 100644
--- a/http/headers/Upgrade-Insecure-Requests.json
+++ b/http/headers/Upgrade-Insecure-Requests.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Upgrade.json b/http/headers/Upgrade.json
index 07429facab03a8..2862de8e6408ae 100644
--- a/http/headers/Upgrade.json
+++ b/http/headers/Upgrade.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/User-Agent.json b/http/headers/User-Agent.json
index 595c4c89f9e8f9..2945b7635a1260 100644
--- a/http/headers/User-Agent.json
+++ b/http/headers/User-Agent.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Vary.json b/http/headers/Vary.json
index b866c9caa9b957..01b7897e06e66f 100644
--- a/http/headers/Vary.json
+++ b/http/headers/Vary.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Via.json b/http/headers/Via.json
index 528e8dffdab235..988a8157207064 100644
--- a/http/headers/Via.json
+++ b/http/headers/Via.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Viewport-Width.json b/http/headers/Viewport-Width.json
index 8953ae1de83a76..21734a93752a56 100644
--- a/http/headers/Viewport-Width.json
+++ b/http/headers/Viewport-Width.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/WWW-Authenticate.json b/http/headers/WWW-Authenticate.json
index 056c285a32eb11..53ce4355190c41 100644
--- a/http/headers/WWW-Authenticate.json
+++ b/http/headers/WWW-Authenticate.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -168,7 +172,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -203,7 +208,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/Warning.json b/http/headers/Warning.json
index 33b6dd8b92d2ab..c3ba7e9184d211 100644
--- a/http/headers/Warning.json
+++ b/http/headers/Warning.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/Width.json b/http/headers/Width.json
index 0633520c3e3694..4d8e9fe73cf00e 100644
--- a/http/headers/Width.json
+++ b/http/headers/Width.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/X-Content-Type-Options.json b/http/headers/X-Content-Type-Options.json
index 0981a04883e461..e9adcdb0f3dfdc 100644
--- a/http/headers/X-Content-Type-Options.json
+++ b/http/headers/X-Content-Type-Options.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/X-DNS-Prefetch-Control.json b/http/headers/X-DNS-Prefetch-Control.json
index 07a815707311df..21d61bb17ec5fd 100644
--- a/http/headers/X-DNS-Prefetch-Control.json
+++ b/http/headers/X-DNS-Prefetch-Control.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/headers/X-Frame-Options.json b/http/headers/X-Frame-Options.json
index 1c6e8ea0af8c52..ce176084b56e93 100644
--- a/http/headers/X-Frame-Options.json
+++ b/http/headers/X-Frame-Options.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/http/headers/X-XSS-Protection.json b/http/headers/X-XSS-Protection.json
index dba1283b105d84..0f6187217ae807 100644
--- a/http/headers/X-XSS-Protection.json
+++ b/http/headers/X-XSS-Protection.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/methods.json b/http/methods.json
index e84fffb6fe8ebd..86f3631a3c2b3a 100644
--- a/http/methods.json
+++ b/http/methods.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -109,7 +111,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "1"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -145,7 +148,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -181,7 +185,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -217,7 +222,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -253,7 +259,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/mixed-content.json b/http/mixed-content.json
index faa8df14849c4a..b048de7b13875c 100644
--- a/http/mixed-content.json
+++ b/http/mixed-content.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -59,7 +60,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -93,7 +95,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -127,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -165,7 +169,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -203,7 +208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -272,7 +279,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -306,7 +314,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/http/status.json b/http/status.json
index 235db75585cd6a..d95dd63a9102fa 100644
--- a/http/status.json
+++ b/http/status.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -96,7 +98,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +139,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -171,7 +175,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/javascript/builtins/AggregateError.json b/javascript/builtins/AggregateError.json
index d67cf655257883..32c204c7f0d910 100644
--- a/javascript/builtins/AggregateError.json
+++ b/javascript/builtins/AggregateError.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/AggregateError",
           "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-aggregate-error-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2021"
+            "web-features:snapshot:ecmascript-2021",
+            "web-features:promise-any"
           ],
           "support": {
             "chrome": {
@@ -35,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -49,7 +51,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/AggregateError/AggregateError",
             "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-aggregate-error-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:promise-any"
             ],
             "support": {
               "chrome": {
@@ -78,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +96,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/AggregateError/errors",
             "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-aggregate-error",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:promise-any"
             ],
             "support": {
               "chrome": {
@@ -121,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +168,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
diff --git a/javascript/builtins/Array.json b/javascript/builtins/Array.json
index 3bdd42d86e0310..93c9076c372d39 100644
--- a/javascript/builtins/Array.json
+++ b/javascript/builtins/Array.json
@@ -44,7 +44,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -96,7 +97,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -190,7 +193,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -282,7 +287,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -336,7 +342,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -382,7 +389,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -436,7 +444,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -484,7 +493,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -532,7 +542,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -576,7 +587,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -620,7 +632,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -664,7 +677,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -708,7 +722,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -762,7 +777,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -808,7 +824,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -851,7 +868,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -897,7 +915,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -951,7 +970,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1001,7 +1021,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1051,7 +1072,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1097,7 +1119,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1151,7 +1174,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1203,7 +1227,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1257,7 +1282,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1307,7 +1333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1357,7 +1384,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1407,7 +1435,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1457,7 +1486,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1507,7 +1537,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1557,7 +1588,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1607,7 +1639,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1657,7 +1690,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1711,7 +1745,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1761,7 +1796,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1803,7 +1839,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1855,7 +1892,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1872,8 +1910,7 @@
               "https://tc39.es/ecma402/#sup-array.prototype.tolocalestring"
             ],
             "tags": [
-              "web-features:array",
-              "web-features:snapshot:ecmascript-3"
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -1910,7 +1947,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1921,6 +1959,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1967,7 +2008,8 @@
                 "samsunginternet_android": {
                   "version_added": "2.0"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1979,6 +2021,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2010,7 +2055,8 @@
                 "samsunginternet_android": {
                   "version_added": "2.0"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2055,7 +2101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2099,7 +2146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2143,7 +2191,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2195,7 +2244,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2245,7 +2295,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2297,7 +2348,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2341,7 +2393,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2402,7 +2455,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2446,7 +2500,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2492,7 +2547,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/ArrayBuffer.json b/javascript/builtins/ArrayBuffer.json
index 2228514ce9d527..a0156fa22996ac 100644
--- a/javascript/builtins/ArrayBuffer.json
+++ b/javascript/builtins/ArrayBuffer.json
@@ -45,7 +45,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -98,7 +99,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               "description": "<code>maxByteLength</code> option",
               "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-arraybuffer-constructor",
               "tags": [
-                "web-features:snapshot:ecmascript-2024"
+                "web-features:snapshot:ecmascript-2024",
+                "web-features:resizable-buffers"
               ],
               "support": {
                 "chrome": {
@@ -140,7 +143,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -194,7 +198,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +211,7 @@
         "detached": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/detached",
-            "spec_url": "https://tc39.es/proposal-arraybuffer-transfer/#sec-get-arraybuffer.prototype.detached",
+            "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-arraybuffer.prototype.detached",
             "tags": [
               "web-features:transferable-arraybuffer"
             ],
@@ -237,7 +242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -282,7 +288,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -296,7 +303,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/maxByteLength",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-arraybuffer.prototype.maxbytelength",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -325,7 +333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +348,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/resizable",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-arraybuffer.prototype.resizable",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -368,7 +378,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -382,7 +393,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/resize",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-arraybuffer.prototype.resize",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -411,7 +423,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -463,7 +476,8 @@
                 "version_added": "6"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -475,7 +489,7 @@
         "transfer": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/transfer",
-            "spec_url": "https://tc39.es/proposal-arraybuffer-transfer/#sec-arraybuffer.prototype.transfer",
+            "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-arraybuffer.prototype.transfer",
             "tags": [
               "web-features:transferable-arraybuffer"
             ],
@@ -506,7 +520,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -518,7 +533,7 @@
         "transferToFixedLength": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/transferToFixedLength",
-            "spec_url": "https://tc39.es/proposal-arraybuffer-transfer/#sec-arraybuffer.prototype.transfertofixedlength",
+            "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-arraybuffer.prototype.transfertofixedlength",
             "tags": [
               "web-features:transferable-arraybuffer"
             ],
@@ -549,7 +564,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -595,7 +611,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/AsyncFunction.json b/javascript/builtins/AsyncFunction.json
index a9072ddf10b2fd..d49fc884158ddd 100644
--- a/javascript/builtins/AsyncFunction.json
+++ b/javascript/builtins/AsyncFunction.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/AsyncGenerator.json b/javascript/builtins/AsyncGenerator.json
index bb256a0d98e273..58c038ad7a1a45 100644
--- a/javascript/builtins/AsyncGenerator.json
+++ b/javascript/builtins/AsyncGenerator.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -120,7 +122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +166,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/AsyncGeneratorFunction.json b/javascript/builtins/AsyncGeneratorFunction.json
index 20bc5240ad37b9..30da64c0d1e49b 100644
--- a/javascript/builtins/AsyncGeneratorFunction.json
+++ b/javascript/builtins/AsyncGeneratorFunction.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/AsyncIterator.json b/javascript/builtins/AsyncIterator.json
index 060ca77c90a882..9fba9ce658f587 100644
--- a/javascript/builtins/AsyncIterator.json
+++ b/javascript/builtins/AsyncIterator.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Atomics.json b/javascript/builtins/Atomics.json
index 8dd58132698378..d8a41466a70140 100644
--- a/javascript/builtins/Atomics.json
+++ b/javascript/builtins/Atomics.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics",
           "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics-object",
           "tags": [
-            "web-features:snapshot:ecmascript-2017"
+            "web-features:snapshot:ecmascript-2017",
+            "web-features:shared-memory"
           ],
           "support": {
             "chrome": {
@@ -38,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +96,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/add",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.add",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -124,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +143,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/and",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.and",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -169,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -183,7 +190,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/compareExchange",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.compareexchange",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -214,7 +222,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -228,7 +237,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/exchange",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.exchange",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -259,7 +269,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,7 +284,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/isLockFree",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.islockfree",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -304,7 +316,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -318,7 +331,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/load",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.load",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -349,7 +363,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -363,7 +378,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/notify",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.notify",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -394,7 +410,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -408,7 +425,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/or",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.or",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -439,7 +457,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -453,7 +472,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/store",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.store",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -484,7 +504,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -498,7 +519,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/sub",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.sub",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -529,7 +551,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -543,7 +566,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/wait",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.wait",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -574,7 +598,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -588,7 +613,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/waitAsync",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.waitasync",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:atomics-wait-async"
             ],
             "support": {
               "chrome": {
@@ -621,7 +647,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -635,7 +662,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Atomics/xor",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-atomics.xor",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -666,7 +694,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/BigInt.json b/javascript/builtins/BigInt.json
index dbd62187063342..a27a7a0f273aff 100644
--- a/javascript/builtins/BigInt.json
+++ b/javascript/builtins/BigInt.json
@@ -36,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -80,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -168,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -182,8 +186,7 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/BigInt/toLocaleString",
             "spec_url": "https://tc39.es/ecma402/#sup-bigint.prototype.tolocalestring",
             "tags": [
-              "web-features:snapshot:ecmascript-2020",
-              "web-features:bigint"
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -212,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -223,6 +227,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "76"
@@ -260,7 +267,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -272,6 +280,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "76"
@@ -301,7 +312,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -346,7 +358,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -390,7 +403,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/BigInt64Array.json b/javascript/builtins/BigInt64Array.json
index f3161b625edcf9..c2ecbb2dd41f1a 100644
--- a/javascript/builtins/BigInt64Array.json
+++ b/javascript/builtins/BigInt64Array.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/BigUint64Array.json b/javascript/builtins/BigUint64Array.json
index 534e95039fda0b..65121211c88705 100644
--- a/javascript/builtins/BigUint64Array.json
+++ b/javascript/builtins/BigUint64Array.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Boolean.json b/javascript/builtins/Boolean.json
index b39708ecffdb59..3b0a7e7b06379c 100644
--- a/javascript/builtins/Boolean.json
+++ b/javascript/builtins/Boolean.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -188,7 +191,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/DataView.json b/javascript/builtins/DataView.json
index 934798e074f6ba..ec2677e072d8b3 100644
--- a/javascript/builtins/DataView.json
+++ b/javascript/builtins/DataView.json
@@ -43,7 +43,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -94,7 +95,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,7 +108,8 @@
             "__compat": {
               "description": "<code>SharedArrayBuffer</code> accepted as buffer",
               "tags": [
-                "web-features:snapshot:ecmascript-2017"
+                "web-features:snapshot:ecmascript-2017",
+                "web-features:shared-memory"
               ],
               "support": {
                 "chrome": {
@@ -137,7 +140,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -189,7 +193,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -240,7 +245,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -291,7 +297,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -334,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -377,7 +385,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -420,7 +429,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -471,7 +481,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -522,7 +533,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -573,7 +585,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -624,7 +637,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -675,7 +689,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -726,7 +741,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -777,7 +793,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -828,7 +845,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -871,7 +889,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -914,7 +933,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -957,7 +977,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1008,7 +1029,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1059,7 +1081,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1110,7 +1133,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1161,7 +1185,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1212,7 +1237,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1263,7 +1289,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1314,7 +1341,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1365,7 +1393,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Date.json b/javascript/builtins/Date.json
index a7eda746dacfd5..d3cc4125d54ae0 100644
--- a/javascript/builtins/Date.json
+++ b/javascript/builtins/Date.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date",
           "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:date"
           ],
           "support": {
             "chrome": {
@@ -42,7 +43,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -56,7 +58,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/Date",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -91,7 +94,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +109,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/UTC",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.utc",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -140,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +158,8 @@
             "__compat": {
               "description": "<code>monthIndex</code> defaults to 0",
               "tags": [
-                "web-features:snapshot:ecmascript-2017"
+                "web-features:snapshot:ecmascript-2017",
+                "web-features:date"
               ],
               "support": {
                 "chrome": {
@@ -181,7 +188,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -196,7 +204,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getDate",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getdate",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -231,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,7 +255,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getDay",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getday",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -280,7 +291,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -294,7 +306,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getFullYear",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getfullyear",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -329,7 +342,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -343,7 +357,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getHours",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.gethours",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -378,7 +393,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -392,7 +408,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getMilliseconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getmilliseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -427,7 +444,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -441,7 +459,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getMinutes",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getminutes",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -476,7 +495,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -490,7 +510,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getMonth",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getmonth",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -525,7 +546,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -539,7 +561,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getSeconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -574,7 +597,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -588,7 +612,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.gettime",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -623,7 +648,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -637,7 +663,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.gettimezoneoffset",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -672,7 +699,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -686,7 +714,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCDate",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcdate",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -721,7 +750,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -735,7 +765,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCDay",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcday",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -770,7 +801,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -784,7 +816,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCFullYear",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcfullyear",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -819,7 +852,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -833,7 +867,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCHours",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutchours",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -868,7 +903,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -882,7 +918,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCMilliseconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcmilliseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -917,7 +954,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -931,7 +969,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCMinutes",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcminutes",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -966,7 +1005,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -980,7 +1020,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCMonth",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcmonth",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1015,7 +1056,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1029,7 +1071,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCSeconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.getutcseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1064,7 +1107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1113,7 +1157,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1127,7 +1172,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/now",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.now",
             "tags": [
-              "web-features:snapshot:ecmascript-5"
+              "web-features:snapshot:ecmascript-5",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1162,7 +1208,8 @@
                 "version_added": "4"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1176,7 +1223,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/parse",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.parse",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1211,7 +1259,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1223,7 +1272,8 @@
             "__compat": {
               "description": "ISO 8601 format",
               "tags": [
-                "web-features:snapshot:ecmascript-5"
+                "web-features:snapshot:ecmascript-5",
+                "web-features:date"
               ],
               "support": {
                 "chrome": {
@@ -1260,7 +1310,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1275,7 +1326,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setDate",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setdate",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1310,7 +1362,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1324,7 +1377,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setFullYear",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setfullyear",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1359,7 +1413,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1373,7 +1428,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setHours",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.sethours",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1408,7 +1464,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1422,7 +1479,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setMilliseconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setmilliseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1457,7 +1515,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1471,7 +1530,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setMinutes",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setminutes",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1506,7 +1566,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1520,7 +1581,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setMonth",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setmonth",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1555,7 +1617,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1569,7 +1632,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setSeconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1604,7 +1668,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1618,7 +1683,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setTime",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.settime",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1653,7 +1719,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1667,7 +1734,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCDate",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcdate",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1702,7 +1770,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1716,7 +1785,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCFullYear",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcfullyear",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1751,7 +1821,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1765,7 +1836,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCHours",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutchours",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1800,7 +1872,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1814,7 +1887,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCMilliseconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcmilliseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1849,7 +1923,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1863,7 +1938,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCMinutes",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcminutes",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1898,7 +1974,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1912,7 +1989,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCMonth",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcmonth",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1947,7 +2025,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1961,7 +2040,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/setUTCSeconds",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.setutcseconds",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -1996,7 +2076,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2045,7 +2126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2059,7 +2141,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toDateString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.todatestring",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2094,7 +2177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2143,7 +2227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2157,7 +2242,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.toisostring",
             "tags": [
-              "web-features:snapshot:ecmascript-5"
+              "web-features:snapshot:ecmascript-5",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2194,7 +2280,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2208,7 +2295,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toJSON",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.tojson",
             "tags": [
-              "web-features:snapshot:ecmascript-5"
+              "web-features:snapshot:ecmascript-5",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2245,7 +2333,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2262,7 +2351,8 @@
               "https://tc39.es/ecma402/#sup-date.prototype.tolocaledatestring"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -2297,7 +2387,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2308,6 +2399,9 @@
           "iana_time_zone_names": {
             "__compat": {
               "description": "IANA time zone names in <code>timeZone</code> option",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2339,7 +2433,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2351,6 +2446,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2397,7 +2495,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2409,6 +2508,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2440,7 +2542,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2458,7 +2561,8 @@
               "https://tc39.es/ecma402/#sup-date.prototype.tolocalestring"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -2493,7 +2597,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2504,6 +2609,9 @@
           "iana_time_zone_names": {
             "__compat": {
               "description": "IANA time zone names in <code>timeZone</code> option",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2535,7 +2643,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2547,6 +2656,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2593,7 +2705,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2605,6 +2718,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2636,7 +2752,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2654,7 +2771,8 @@
               "https://tc39.es/ecma402/#sup-date.prototype.tolocaletimestring"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -2689,7 +2807,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2700,6 +2819,9 @@
           "iana_time_zone_names": {
             "__compat": {
               "description": "IANA time zone names in <code>timeZone</code> option",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2731,7 +2853,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2743,6 +2866,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2789,7 +2915,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2801,6 +2928,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -2832,7 +2962,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2847,7 +2978,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.tostring",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2882,7 +3014,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2896,7 +3029,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toTimeString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.totimestring",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2931,7 +3065,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2945,7 +3080,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/toUTCString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.toutcstring",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -2980,7 +3116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2994,7 +3131,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/valueOf",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype.valueof",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -3029,7 +3167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -3044,7 +3183,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/Symbol.toPrimitive",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-date.prototype-%symbol.toprimitive%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:date"
             ],
             "support": {
               "chrome": {
@@ -3075,7 +3215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Error.json b/javascript/builtins/Error.json
index 3e0e68887a5f50..f22848004bb0ed 100644
--- a/javascript/builtins/Error.json
+++ b/javascript/builtins/Error.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +130,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -167,7 +170,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -210,7 +214,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -254,7 +259,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -293,7 +299,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -333,7 +340,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -372,7 +380,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -411,7 +420,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -460,7 +470,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -509,7 +520,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -555,7 +567,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -602,7 +615,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -651,7 +665,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/EvalError.json b/javascript/builtins/EvalError.json
index 138b326761a88d..196075f298ae4c 100644
--- a/javascript/builtins/EvalError.json
+++ b/javascript/builtins/EvalError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/FinalizationRegistry.json b/javascript/builtins/FinalizationRegistry.json
index c5898807d72f2f..da101a8cc02984 100644
--- a/javascript/builtins/FinalizationRegistry.json
+++ b/javascript/builtins/FinalizationRegistry.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry",
           "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-finalization-registry-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2021"
+            "web-features:snapshot:ecmascript-2021",
+            "web-features:weak-references"
           ],
           "support": {
             "chrome": {
@@ -35,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -49,7 +51,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry/FinalizationRegistry",
             "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-finalization-registry-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:weak-references"
             ],
             "support": {
               "chrome": {
@@ -78,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +96,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry/register",
             "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-finalization-registry.prototype.register",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:weak-references"
             ],
             "support": {
               "chrome": {
@@ -121,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -177,7 +184,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry/unregister",
             "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-finalization-registry.prototype.unregister",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:weak-references"
             ],
             "support": {
               "chrome": {
@@ -206,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Float16Array.json b/javascript/builtins/Float16Array.json
index 4100e2d77dd1e1..4bf54b732f05b5 100644
--- a/javascript/builtins/Float16Array.json
+++ b/javascript/builtins/Float16Array.json
@@ -35,7 +35,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -78,7 +79,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Float32Array.json b/javascript/builtins/Float32Array.json
index 3cd11aa7d08791..d2091aa6194b3e 100644
--- a/javascript/builtins/Float32Array.json
+++ b/javascript/builtins/Float32Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Float64Array.json b/javascript/builtins/Float64Array.json
index 555de7ace6a7c0..3fe6023d53cde3 100644
--- a/javascript/builtins/Float64Array.json
+++ b/javascript/builtins/Float64Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Function.json b/javascript/builtins/Function.json
index b604f755918fee..677b071b2414e9 100644
--- a/javascript/builtins/Function.json
+++ b/javascript/builtins/Function.json
@@ -43,7 +43,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -92,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -190,7 +193,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -236,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -289,7 +294,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +345,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -386,7 +393,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -425,7 +433,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -474,7 +483,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -517,7 +527,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -567,7 +578,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -610,7 +622,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -662,7 +675,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -712,7 +726,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -753,7 +768,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -800,7 +816,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Generator.json b/javascript/builtins/Generator.json
index d42508b3e4097b..717722e4962d1d 100644
--- a/javascript/builtins/Generator.json
+++ b/javascript/builtins/Generator.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -81,7 +82,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/GeneratorFunction.json b/javascript/builtins/GeneratorFunction.json
index 8119c1327659e3..100e3958e91b1b 100644
--- a/javascript/builtins/GeneratorFunction.json
+++ b/javascript/builtins/GeneratorFunction.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Int16Array.json b/javascript/builtins/Int16Array.json
index 5ad48ec9d8b039..cead7b69d81d7d 100644
--- a/javascript/builtins/Int16Array.json
+++ b/javascript/builtins/Int16Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -194,7 +197,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Int32Array.json b/javascript/builtins/Int32Array.json
index e98e2a9f244799..08c6cd1cf8cbe8 100644
--- a/javascript/builtins/Int32Array.json
+++ b/javascript/builtins/Int32Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Int8Array.json b/javascript/builtins/Int8Array.json
index f453fb727f80c9..9550d0dfcb7e46 100644
--- a/javascript/builtins/Int8Array.json
+++ b/javascript/builtins/Int8Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/InternalError.json b/javascript/builtins/InternalError.json
index 8671e9ee3ae266..f7f1dd94a48700 100644
--- a/javascript/builtins/InternalError.json
+++ b/javascript/builtins/InternalError.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Intl.json b/javascript/builtins/Intl.json
index 2d207ed694c9eb..81e2ccc6cd1dc0 100644
--- a/javascript/builtins/Intl.json
+++ b/javascript/builtins/Intl.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl",
           "spec_url": "https://tc39.es/ecma402/#intl-object",
+          "tags": [
+            "web-features:intl"
+          ],
           "support": {
             "chrome": {
               "version_added": "24"
@@ -36,7 +39,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -48,6 +52,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/getCanonicalLocales",
             "spec_url": "https://tc39.es/ecma402/#sec-intl.getcanonicallocales",
+            "tags": [
+              "web-features:intl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "54"
@@ -79,7 +86,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,6 +100,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/supportedValuesOf",
             "spec_url": "https://tc39.es/ecma402/#sec-intl.supportedvaluesof",
+            "tags": [
+              "web-features:intl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "99"
@@ -119,7 +130,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Intl/Collator.json b/javascript/builtins/Intl/Collator.json
index eda36f8cf733b2..d16ddd86efa6d0 100644
--- a/javascript/builtins/Intl/Collator.json
+++ b/javascript/builtins/Intl/Collator.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Collator",
             "spec_url": "https://tc39.es/ecma402/#collator-objects",
+            "tags": [
+              "web-features:intl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "24"
@@ -38,7 +41,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -51,6 +55,9 @@
               "description": "<code>Collator()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Collator/Collator",
               "spec_url": "https://tc39.es/ecma402/#sec-the-intl-collator-constructor",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -89,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -100,6 +108,9 @@
             "options_caseFirst_parameter": {
               "__compat": {
                 "description": "<code>options.caseFirst</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -131,7 +142,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -143,6 +155,9 @@
             "options_collation_parameter": {
               "__compat": {
                 "description": "<code>options.collation</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "86"
@@ -172,7 +187,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -184,6 +200,9 @@
             "options_ignorePunctuation_parameter": {
               "__compat": {
                 "description": "<code>options.ignorePunctuation</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -213,7 +232,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -225,6 +245,9 @@
             "options_localeMatcher_parameter": {
               "__compat": {
                 "description": "<code>options.localeMatcher</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -254,7 +277,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -266,6 +290,9 @@
             "options_numeric_parameter": {
               "__compat": {
                 "description": "<code>options.numeric</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -295,7 +322,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -307,6 +335,9 @@
             "options_sensitivity_parameter": {
               "__compat": {
                 "description": "<code>options.sensitivity</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -336,7 +367,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -348,6 +380,9 @@
             "options_usage_parameter": {
               "__compat": {
                 "description": "<code>options.usage</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -377,7 +412,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -391,6 +427,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Collator/compare",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.collator.prototype.compare",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -423,7 +462,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -436,6 +476,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Collator/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.collator.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -468,7 +511,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -481,6 +525,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Collator/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.collator.supportedlocalesof",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -519,7 +566,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/DateTimeFormat.json b/javascript/builtins/Intl/DateTimeFormat.json
index b8b022e46308be..cc7e2b3f4da728 100644
--- a/javascript/builtins/Intl/DateTimeFormat.json
+++ b/javascript/builtins/Intl/DateTimeFormat.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat",
             "spec_url": "https://tc39.es/ecma402/#datetimeformat-objects",
+            "tags": [
+              "web-features:intl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "24"
@@ -38,7 +41,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -51,6 +55,9 @@
               "description": "<code>DateTimeFormat()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-datetimeformat-constructor",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -89,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -100,6 +108,8 @@
             "IntlLegacyConstructedSymbol": {
               "__compat": {
                 "description": "Supports normative optional <code>ChainDateTimeFormat</code> behavior",
+                "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat#return_value",
+                "spec_url": "https://tc39.es/ecma402/#sec-chaindatetimeformat",
                 "support": {
                   "chrome": [
                     {
@@ -143,7 +153,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -155,6 +166,9 @@
             "locales_parameter": {
               "__compat": {
                 "description": "<code>locales</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -193,7 +207,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -205,6 +220,9 @@
             "options_parameter": {
               "__compat": {
                 "description": "<code>options</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -236,7 +254,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -247,6 +266,9 @@
               "options_calendar_parameter": {
                 "__compat": {
                   "description": "<code>options.calendar</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "80"
@@ -274,7 +296,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -286,6 +309,9 @@
               "options_dateStyle_parameter": {
                 "__compat": {
                   "description": "<code>options.dateStyle</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "76"
@@ -313,7 +339,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -325,6 +352,9 @@
               "options_dayPeriod_parameter": {
                 "__compat": {
                   "description": "<code>options.dayPeriod</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "92"
@@ -354,7 +384,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -366,6 +397,9 @@
               "options_fractionalSecondDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.fractionalSecondDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "84"
@@ -393,7 +427,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -405,6 +440,9 @@
               "options_hourCycle_parameter": {
                 "__compat": {
                   "description": "<code>options.hourCycle</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "73"
@@ -434,7 +472,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -446,6 +485,9 @@
               "options_numberingSystem_parameter": {
                 "__compat": {
                   "description": "<code>options.numberingSystem</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "80"
@@ -473,7 +515,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -485,6 +528,9 @@
               "options_timeStyle_parameter": {
                 "__compat": {
                   "description": "<code>options.timeStyle</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "76"
@@ -512,7 +558,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -524,6 +571,9 @@
               "options_timeZone_parameter": {
                 "__compat": {
                   "description": "<code>options.timeZone</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -555,7 +605,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -566,6 +617,9 @@
                 "iana_time_zones": {
                   "__compat": {
                     "description": "IANA time zone names in <code>options.timeZone</code> option",
+                    "tags": [
+                      "web-features:intl"
+                    ],
                     "support": {
                       "chrome": {
                         "version_added": "24"
@@ -599,7 +653,8 @@
                       "samsunginternet_android": "mirror",
                       "webview_android": {
                         "version_added": "37"
-                      }
+                      },
+                      "webview_ios": "mirror"
                     },
                     "status": {
                       "experimental": false,
@@ -612,6 +667,9 @@
               "options_timeZoneName_parameter": {
                 "__compat": {
                   "description": "<code>options.timeZoneName</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -643,7 +701,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -654,6 +713,9 @@
                 "extended_values": {
                   "__compat": {
                     "description": "<code>shortGeneric</code>/<code>longGeneric</code>/<code>shortOffset</code>/<code>longOffset</code> as <code>options.timeZoneName</code> option",
+                    "tags": [
+                      "web-features:intl"
+                    ],
                     "support": {
                       "chrome": {
                         "version_added": "95"
@@ -681,7 +743,8 @@
                       },
                       "safari_ios": "mirror",
                       "samsunginternet_android": "mirror",
-                      "webview_android": "mirror"
+                      "webview_android": "mirror",
+                      "webview_ios": "mirror"
                     },
                     "status": {
                       "experimental": false,
@@ -697,6 +760,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/format",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype.format",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -729,7 +795,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -742,6 +809,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/formatRange",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype.formatRange",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "76"
@@ -770,7 +840,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -783,6 +854,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/formatRangeToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.DateTimeFormat.prototype.formatRangeToParts",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "76"
@@ -811,7 +885,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -824,6 +899,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/formatToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.DateTimeFormat.prototype.formatToParts",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "57",
@@ -869,7 +947,8 @@
                   "version_added": "7.0",
                   "notes": "Before version 71, <code>formatToParts()</code> returned an object with an incorrectly cased type key of <code>dayperiod</code>. Version 71 and later use the specification defined <code>dayPeriod</code>. See <a href='https://crbug.com/865351'>bug 865351</a>."
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -882,6 +961,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.datetimeformat.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -914,7 +996,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -925,6 +1008,9 @@
             "computed_timezone": {
               "__compat": {
                 "description": "computed <code>timeZone</code>",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "35"
@@ -958,7 +1044,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -972,6 +1059,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.datetimeformat.supportedlocalesof",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1010,7 +1100,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/DisplayNames.json b/javascript/builtins/Intl/DisplayNames.json
index efb88b7b2ef674..37e7405d2ffd66 100644
--- a/javascript/builtins/Intl/DisplayNames.json
+++ b/javascript/builtins/Intl/DisplayNames.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames",
             "spec_url": "https://tc39.es/ecma402/#intl-displaynames-objects",
+            "tags": [
+              "web-features:intl-display-names"
+            ],
             "support": {
               "chrome": {
                 "version_added": "81"
@@ -33,7 +36,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -46,6 +50,9 @@
               "description": "<code>DisplayNames()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames/DisplayNames",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-displaynames-constructor",
+              "tags": [
+                "web-features:intl-display-names"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "81"
@@ -73,7 +80,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -86,6 +94,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames/of",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.DisplayNames.prototype.of",
+              "tags": [
+                "web-features:intl-display-names"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "81"
@@ -113,7 +124,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -126,6 +138,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.DisplayNames.prototype.resolvedOptions",
+              "tags": [
+                "web-features:intl-display-names"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "81"
@@ -153,7 +168,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -166,6 +182,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.DisplayNames.supportedLocalesOf",
+              "tags": [
+                "web-features:intl-display-names"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "81"
@@ -193,7 +212,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/DurationFormat.json b/javascript/builtins/Intl/DurationFormat.json
index 83738bf360891f..14877f80e0e680 100644
--- a/javascript/builtins/Intl/DurationFormat.json
+++ b/javascript/builtins/Intl/DurationFormat.json
@@ -6,9 +6,12 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat",
             "spec_url": "https://tc39.es/proposal-intl-duration-format/#durationformat-objects",
+            "tags": [
+              "web-features:intl-duration-format"
+            ],
             "support": {
               "chrome": {
-                "version_added": false
+                "version_added": "129"
               },
               "chrome_android": "mirror",
               "deno": {
@@ -33,10 +36,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -46,9 +50,12 @@
               "description": "<code>DurationFormat()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/DurationFormat",
               "spec_url": "https://tc39.es/proposal-intl-duration-format/#sec-intl-durationformat-constructor",
+              "tags": [
+                "web-features:intl-duration-format"
+              ],
               "support": {
                 "chrome": {
-                  "version_added": false
+                  "version_added": "129"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -73,10 +80,11 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
-                "experimental": true,
+                "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
@@ -86,9 +94,12 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/format",
               "spec_url": "https://tc39.es/proposal-intl-duration-format/#sec-Intl.DurationFormat.prototype.format",
+              "tags": [
+                "web-features:intl-duration-format"
+              ],
               "support": {
                 "chrome": {
-                  "version_added": false
+                  "version_added": "129"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -113,10 +124,11 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
-                "experimental": true,
+                "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
@@ -126,9 +138,12 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/formatToParts",
               "spec_url": "https://tc39.es/proposal-intl-duration-format/#sec-Intl.DurationFormat.prototype.formatToParts",
+              "tags": [
+                "web-features:intl-duration-format"
+              ],
               "support": {
                 "chrome": {
-                  "version_added": false
+                  "version_added": "129"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -153,10 +168,11 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
-                "experimental": true,
+                "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
@@ -166,9 +182,12 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/resolvedOptions",
               "spec_url": "https://tc39.es/proposal-intl-duration-format/#sec-Intl.DurationFormat.prototype.resolvedOptions",
+              "tags": [
+                "web-features:intl-duration-format"
+              ],
               "support": {
                 "chrome": {
-                  "version_added": false
+                  "version_added": "129"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -193,10 +212,11 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
-                "experimental": true,
+                "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
@@ -206,9 +226,12 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/supportedLocalesOf",
               "spec_url": "https://tc39.es/proposal-intl-duration-format/#sec-Intl.DurationFormat.supportedLocalesOf",
+              "tags": [
+                "web-features:intl-duration-format"
+              ],
               "support": {
                 "chrome": {
-                  "version_added": false
+                  "version_added": "129"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -233,10 +256,11 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
-                "experimental": true,
+                "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
diff --git a/javascript/builtins/Intl/ListFormat.json b/javascript/builtins/Intl/ListFormat.json
index 0da8ab2b4268ba..ecb228e981e337 100644
--- a/javascript/builtins/Intl/ListFormat.json
+++ b/javascript/builtins/Intl/ListFormat.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat",
             "spec_url": "https://tc39.es/ecma402/#listformat-objects",
+            "tags": [
+              "web-features:intl-list-format"
+            ],
             "support": {
               "chrome": {
                 "version_added": "72"
@@ -37,7 +40,8 @@
                 "version_added": "14.5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -50,6 +54,9 @@
               "description": "<code>ListFormat()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat/ListFormat",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-listformat-constructor",
+              "tags": [
+                "web-features:intl-list-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "72"
@@ -87,7 +94,8 @@
                   "version_added": "14.5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -100,6 +108,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat/format",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.ListFormat.prototype.format",
+              "tags": [
+                "web-features:intl-list-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "72"
@@ -131,7 +142,8 @@
                   "version_added": "14.5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -144,6 +156,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat/formatToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.ListFormat.prototype.formatToParts",
+              "tags": [
+                "web-features:intl-list-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "72"
@@ -175,7 +190,8 @@
                   "version_added": "14.5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -188,6 +204,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.ListFormat.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl-list-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "72"
@@ -219,7 +238,8 @@
                   "version_added": "14.5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -232,6 +252,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.ListFormat.supportedLocalesOf",
+              "tags": [
+                "web-features:intl-list-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "72"
@@ -269,7 +292,8 @@
                   "version_added": "14.5"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/Locale.json b/javascript/builtins/Intl/Locale.json
index 5a92140de769c0..5c3dd6371e978f 100644
--- a/javascript/builtins/Intl/Locale.json
+++ b/javascript/builtins/Intl/Locale.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale",
             "spec_url": "https://tc39.es/ecma402/#locale-objects",
+            "tags": [
+              "web-features:intl-locale"
+            ],
             "support": {
               "chrome": {
                 "version_added": "74"
@@ -33,7 +36,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -46,6 +50,9 @@
               "description": "<code>Locale()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/Locale",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-locale-constructor",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -73,7 +80,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -86,6 +94,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/baseName",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.baseName",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -113,7 +124,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -126,6 +138,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/calendar",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.calendar",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -153,7 +168,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -166,6 +182,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/caseFirst",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.caseFirst",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -193,7 +212,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -206,6 +226,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/collation",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.collation",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -233,7 +256,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -246,6 +270,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getCalendars",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getCalendars",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "calendars",
@@ -285,7 +312,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -298,6 +326,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getCollations",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getCollations",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "collations",
@@ -337,7 +368,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -350,6 +382,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getHourCycles",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getHourCycles",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "hourCycles",
@@ -389,7 +424,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -402,6 +438,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getNumberingSystems",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getNumberingSystems",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "numberingSystems",
@@ -441,7 +480,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -454,6 +494,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getTextInfo",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getTextInfo",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "textInfo",
@@ -495,7 +538,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -508,6 +552,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getTimeZones",
               "spec_url": "https://tc39.es/proposal-intl-locale-info/#sec-Intl.Locale.prototype.getTimeZones",
+              "tags": [
+                "web-features:intl-locale-info"
+              ],
               "support": {
                 "chrome": {
                   "alternative_name": "timeZones",
@@ -547,7 +594,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -599,7 +647,8 @@
                 ],
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -612,6 +661,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/hourCycle",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.hourCycle",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -639,7 +691,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -652,6 +705,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/language",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.language",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -679,7 +735,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -692,6 +749,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/maximize",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.maximize",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -719,7 +779,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -732,6 +793,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/minimize",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.minimize",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -759,7 +823,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -772,6 +837,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/numberingSystem",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.numberingSystem",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -799,7 +867,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -812,6 +881,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/numeric",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.numeric",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -839,7 +911,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -852,6 +925,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/region",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.region",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -879,7 +955,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -892,6 +969,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/script",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.script",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -919,7 +999,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -932,6 +1013,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/toString",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.Locale.prototype.toString",
+              "tags": [
+                "web-features:intl-locale"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "74"
@@ -959,7 +1043,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/NumberFormat.json b/javascript/builtins/Intl/NumberFormat.json
index 2839fc42d0230a..3629bf5b28eb8e 100644
--- a/javascript/builtins/Intl/NumberFormat.json
+++ b/javascript/builtins/Intl/NumberFormat.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat",
             "spec_url": "https://tc39.es/ecma402/#numberformat-objects",
+            "tags": [
+              "web-features:intl"
+            ],
             "support": {
               "chrome": {
                 "version_added": "24"
@@ -38,7 +41,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -51,6 +55,9 @@
               "description": "<code>NumberFormat()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-numberformat-constructor",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -82,7 +89,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -93,6 +101,8 @@
             "IntlLegacyConstructedSymbol": {
               "__compat": {
                 "description": "Supports normative optional <code>ChainNumberFormat</code> behavior",
+                "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat#return_value",
+                "spec_url": "https://tc39.es/ecma402/#sec-chainnumberformat",
                 "support": {
                   "chrome": [
                     {
@@ -136,7 +146,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -148,6 +159,9 @@
             "locales_parameter": {
               "__compat": {
                 "description": "<code>locales</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -186,7 +200,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -198,6 +213,9 @@
             "options_parameter": {
               "__compat": {
                 "description": "<code>options</code> parameter",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "24"
@@ -229,7 +247,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -240,6 +259,9 @@
               "options_compactDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.compactDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -267,7 +289,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -279,6 +302,9 @@
               "options_currency_parameter": {
                 "__compat": {
                   "description": "<code>options.currency</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -310,7 +336,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -322,6 +349,9 @@
               "options_currencyDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.currencyDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -357,7 +387,8 @@
                     ],
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -369,6 +400,9 @@
               "options_currencySign_parameter": {
                 "__compat": {
                   "description": "<code>options.currencySign</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -396,7 +430,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -408,6 +443,9 @@
               "options_localeMatcher_parameter": {
                 "__compat": {
                   "description": "<code>options.localeMatcher</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -439,7 +477,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -451,6 +490,9 @@
               "options_maximumFractionDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.maximumFractionDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -482,7 +524,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -494,6 +537,9 @@
               "options_maximumSignificantDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.maximumSignificantDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -525,7 +571,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -537,6 +584,9 @@
               "options_minimumFractionDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.minimumFractionDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -568,7 +618,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -580,6 +631,9 @@
               "options_minimumIntegerDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.minimumIntegerDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -611,7 +665,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -623,6 +678,9 @@
               "options_minimumSignificantDigits_parameter": {
                 "__compat": {
                   "description": "<code>options.minimumSignificantDigits</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -654,7 +712,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -666,6 +725,9 @@
               "options_notation_parameter": {
                 "__compat": {
                   "description": "<code>options.notation</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -693,7 +755,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -705,6 +768,9 @@
               "options_numberingSystem_parameter": {
                 "__compat": {
                   "description": "<code>options.numberingSystem</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -736,7 +802,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -748,6 +815,9 @@
               "options_roundingIncrement_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingIncrement</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "106"
@@ -774,7 +844,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -786,6 +857,9 @@
               "options_roundingMode_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingMode</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "106"
@@ -812,7 +886,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -824,6 +899,9 @@
               "options_roundingPriority_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingPriority</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "106"
@@ -850,7 +928,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -862,6 +941,9 @@
               "options_signDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.signDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -889,7 +971,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -900,6 +983,9 @@
                 "negative": {
                   "__compat": {
                     "description": "<code>negative</code> value",
+                    "tags": [
+                      "web-features:intl"
+                    ],
                     "support": {
                       "chrome": {
                         "version_added": "106"
@@ -927,7 +1013,8 @@
                       },
                       "safari_ios": "mirror",
                       "samsunginternet_android": "mirror",
-                      "webview_android": "mirror"
+                      "webview_android": "mirror",
+                      "webview_ios": "mirror"
                     },
                     "status": {
                       "experimental": false,
@@ -940,6 +1027,9 @@
               "options_style_parameter": {
                 "__compat": {
                   "description": "<code>options.style</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -971,7 +1061,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -983,6 +1074,9 @@
               "options_trailingZeroDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.trailingZeroDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "106"
@@ -1009,7 +1103,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -1021,6 +1116,9 @@
               "options_unit_parameter": {
                 "__compat": {
                   "description": "<code>options.unit</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -1048,7 +1146,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -1060,6 +1159,9 @@
               "options_unitDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.unitDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "77"
@@ -1087,7 +1189,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -1099,6 +1202,9 @@
               "options_useGrouping_parameter": {
                 "__compat": {
                   "description": "<code>options.useGrouping</code> parameter",
+                  "tags": [
+                    "web-features:intl"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "24"
@@ -1136,7 +1242,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -1173,7 +1280,8 @@
                       },
                       "safari_ios": "mirror",
                       "samsunginternet_android": "mirror",
-                      "webview_android": "mirror"
+                      "webview_android": "mirror",
+                      "webview_ios": "mirror"
                     },
                     "status": {
                       "experimental": false,
@@ -1189,6 +1297,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/format",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.prototype.format",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1223,7 +1334,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1234,6 +1346,9 @@
             "number_parameter-string_decimal": {
               "__compat": {
                 "description": "<code>number</code> param string value is decimal (not <code>Number</code>)",
+                "tags": [
+                  "web-features:intl"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "106"
@@ -1261,7 +1376,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -1275,6 +1391,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/formatRange",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.prototype.formatrange",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "106"
@@ -1302,7 +1421,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1315,6 +1435,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/formatRangeToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.prototype.formatrangetoparts",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "106"
@@ -1342,7 +1465,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1355,6 +1479,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/formatToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.prototype.formattoparts",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "64"
@@ -1385,7 +1512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1398,6 +1526,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1430,7 +1561,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1443,6 +1575,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.numberformat.supportedlocalesof",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1481,7 +1616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/PluralRules.json b/javascript/builtins/Intl/PluralRules.json
index 9c80f6b4a0d697..aa6b984a1a5c0c 100644
--- a/javascript/builtins/Intl/PluralRules.json
+++ b/javascript/builtins/Intl/PluralRules.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules",
             "spec_url": "https://tc39.es/ecma402/#pluralrules-objects",
+            "tags": [
+              "web-features:intl-plural-rules"
+            ],
             "support": {
               "chrome": {
                 "version_added": "63"
@@ -36,7 +39,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -49,6 +53,9 @@
               "description": "<code>PluralRules()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules/PluralRules",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-pluralrules-constructor",
+              "tags": [
+                "web-features:intl-plural-rules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "63"
@@ -85,7 +92,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -96,6 +104,9 @@
             "options_parameter": {
               "__compat": {
                 "description": "<code>options</code> parameter",
+                "tags": [
+                  "web-features:intl-plural-rules"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "106"
@@ -122,7 +133,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -133,6 +145,9 @@
               "options_roundingIncrement_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingIncrement</code> parameter",
+                  "tags": [
+                    "web-features:intl-plural-rules"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": false
@@ -159,7 +174,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -171,6 +187,9 @@
               "options_roundingMode_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingMode</code> parameter",
+                  "tags": [
+                    "web-features:intl-plural-rules"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "117"
@@ -197,7 +216,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -209,6 +229,9 @@
               "options_roundingPriority_parameter": {
                 "__compat": {
                   "description": "<code>options.roundingPriority</code> parameter",
+                  "tags": [
+                    "web-features:intl-plural-rules"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "106"
@@ -235,7 +258,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -247,6 +271,9 @@
               "options_trailingZeroDisplay_parameter": {
                 "__compat": {
                   "description": "<code>options.trailingZeroDisplay</code> parameter",
+                  "tags": [
+                    "web-features:intl-plural-rules"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": false
@@ -273,7 +300,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": true,
@@ -288,6 +316,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.pluralrules.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl-plural-rules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "63"
@@ -318,7 +349,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -331,6 +363,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules/select",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.pluralrules.prototype.select",
+              "tags": [
+                "web-features:intl-plural-rules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "63"
@@ -361,7 +396,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -374,6 +410,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules/selectRange",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.pluralrules.prototype.selectrange",
+              "tags": [
+                "web-features:intl-plural-rules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "106"
@@ -401,7 +440,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -414,6 +454,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/PluralRules/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.pluralrules.supportedlocalesof",
+              "tags": [
+                "web-features:intl-plural-rules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "63"
@@ -444,7 +487,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/RelativeTimeFormat.json b/javascript/builtins/Intl/RelativeTimeFormat.json
index 021e66752af07a..a98d15a346b3ad 100644
--- a/javascript/builtins/Intl/RelativeTimeFormat.json
+++ b/javascript/builtins/Intl/RelativeTimeFormat.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat",
             "spec_url": "https://tc39.es/ecma402/#relativetimeformat-objects",
+            "tags": [
+              "web-features:intl-relative-time-format"
+            ],
             "support": {
               "chrome": {
                 "version_added": "71"
@@ -34,7 +37,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -47,6 +51,9 @@
               "description": "<code>RelativeTimeFormat()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-relativetimeformat-constructor",
+              "tags": [
+                "web-features:intl-relative-time-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "71"
@@ -74,7 +81,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -85,6 +93,9 @@
             "locales_parameter": {
               "__compat": {
                 "description": "<code>locales</code> parameter",
+                "tags": [
+                  "web-features:intl-relative-time-format"
+                ],
                 "support": {
                   "chrome": {
                     "version_added": "71"
@@ -119,7 +130,8 @@
                   },
                   "safari_ios": "mirror",
                   "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
+                  "webview_android": "mirror",
+                  "webview_ios": "mirror"
                 },
                 "status": {
                   "experimental": false,
@@ -132,6 +144,9 @@
               "options_localeMatcher_parameter": {
                 "__compat": {
                   "description": "<code>options.localeMatcher</code> parameter",
+                  "tags": [
+                    "web-features:intl-relative-time-format"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "71"
@@ -159,7 +174,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -171,6 +187,9 @@
               "options_numberingSystem_parameter": {
                 "__compat": {
                   "description": "<code>options.numberingSystem</code> parameter",
+                  "tags": [
+                    "web-features:intl-relative-time-format"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "71"
@@ -198,7 +217,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -210,6 +230,9 @@
               "options_numeric_parameter": {
                 "__compat": {
                   "description": "<code>options.numeric</code> parameter",
+                  "tags": [
+                    "web-features:intl-relative-time-format"
+                  ],
                   "support": {
                     "chrome": {
                       "version_added": "71"
@@ -237,7 +260,8 @@
                     },
                     "safari_ios": "mirror",
                     "samsunginternet_android": "mirror",
-                    "webview_android": "mirror"
+                    "webview_android": "mirror",
+                    "webview_ios": "mirror"
                   },
                   "status": {
                     "experimental": false,
@@ -252,6 +276,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/format",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.prototype.format",
+              "tags": [
+                "web-features:intl-relative-time-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "71"
@@ -280,7 +307,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -293,6 +321,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/formatToParts",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.prototype.formatToParts",
+              "tags": [
+                "web-features:intl-relative-time-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "71"
@@ -321,7 +352,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -334,6 +366,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.relativetimeformat.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl-relative-time-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "71"
@@ -362,57 +397,23 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
                 "standard_track": true,
                 "deprecated": false
               }
-            },
-            "numberingSystem": {
-              "__compat": {
-                "support": {
-                  "chrome": {
-                    "version_added": "73"
-                  },
-                  "chrome_android": "mirror",
-                  "deno": {
-                    "version_added": "1.8"
-                  },
-                  "edge": "mirror",
-                  "firefox": {
-                    "version_added": "70"
-                  },
-                  "firefox_android": "mirror",
-                  "ie": {
-                    "version_added": false
-                  },
-                  "nodejs": {
-                    "version_added": "12.0.0"
-                  },
-                  "oculus": "mirror",
-                  "opera": "mirror",
-                  "opera_android": "mirror",
-                  "safari": {
-                    "version_added": "14"
-                  },
-                  "safari_ios": "mirror",
-                  "samsunginternet_android": "mirror",
-                  "webview_android": "mirror"
-                },
-                "status": {
-                  "experimental": false,
-                  "standard_track": true,
-                  "deprecated": false
-                }
-              }
             }
           },
           "supportedLocalesOf": {
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.supportedLocalesOf",
+              "tags": [
+                "web-features:intl-relative-time-format"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "71"
@@ -447,7 +448,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/Segmenter.json b/javascript/builtins/Intl/Segmenter.json
index a94de7256766ec..b12a191fef2008 100644
--- a/javascript/builtins/Intl/Segmenter.json
+++ b/javascript/builtins/Intl/Segmenter.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter",
             "spec_url": "https://tc39.es/ecma402/#segmenter-objects",
+            "tags": [
+              "web-features:intl-segmenter"
+            ],
             "support": {
               "chrome": {
                 "version_added": "87"
@@ -33,7 +36,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -46,6 +50,9 @@
               "description": "<code>Segmenter()</code> constructor",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/Segmenter",
               "spec_url": "https://tc39.es/ecma402/#sec-intl-segmenter-constructor",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -73,7 +80,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -86,6 +94,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/resolvedOptions",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.segmenter.prototype.resolvedoptions",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -113,7 +124,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -126,6 +138,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/segment",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.segmenter.prototype.segment",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -153,7 +168,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -166,6 +182,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/supportedLocalesOf",
               "spec_url": "https://tc39.es/ecma402/#sec-intl.segmenter.supportedlocalesof",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -193,7 +212,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Intl/Segments.json b/javascript/builtins/Intl/Segments.json
index fcdaaf3ce124d6..8b8c0860579824 100644
--- a/javascript/builtins/Intl/Segments.json
+++ b/javascript/builtins/Intl/Segments.json
@@ -6,6 +6,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/segment/Segments",
             "spec_url": "https://tc39.es/ecma402/#sec-segments-objects",
+            "tags": [
+              "web-features:intl-segmenter"
+            ],
             "support": {
               "chrome": {
                 "version_added": "87"
@@ -33,7 +36,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -45,6 +49,9 @@
             "__compat": {
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/segment/Segments/containing",
               "spec_url": "https://tc39.es/ecma402/#sec-%segmentsprototype%.containing",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -72,7 +79,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -86,6 +94,9 @@
               "description": "[Symbol.iterator]",
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/Segmenter/segment/Segments/Symbol.iterator",
               "spec_url": "https://tc39.es/ecma402/#sec-%intlsegmentsprototype%-%symbol.iterator%",
+              "tags": [
+                "web-features:intl-segmenter"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "87"
@@ -113,7 +124,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Iterator.json b/javascript/builtins/Iterator.json
index 2232daf21b1ce7..d6d13b97e271aa 100644
--- a/javascript/builtins/Iterator.json
+++ b/javascript/builtins/Iterator.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,8 +61,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -79,10 +79,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -108,8 +109,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -127,10 +127,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -156,8 +157,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -175,10 +175,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -204,8 +205,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -223,10 +223,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -252,8 +253,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -271,10 +271,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -300,8 +301,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -319,10 +319,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -348,8 +349,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -367,10 +367,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -396,8 +397,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -415,10 +415,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -444,8 +445,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -463,10 +463,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -492,8 +493,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -511,10 +511,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -540,8 +541,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -559,10 +559,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -588,8 +589,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -607,10 +607,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -636,8 +637,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": false,
-                "impl_url": "https://bugzil.la/1568906"
+                "version_added": "131"
               },
               "firefox_android": "mirror",
               "ie": {
@@ -655,10 +655,11 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }
@@ -715,7 +716,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/JSON.json b/javascript/builtins/JSON.json
index c089bba9409085..c071aa1c905152 100644
--- a/javascript/builtins/JSON.json
+++ b/javascript/builtins/JSON.json
@@ -45,7 +45,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "≤37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -127,7 +129,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -180,7 +183,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -220,7 +224,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -261,7 +266,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -314,7 +320,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -357,7 +364,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Map.json b/javascript/builtins/Map.json
index 2afe5d1c5b3a64..5c577151c9c6f9 100644
--- a/javascript/builtins/Map.json
+++ b/javascript/builtins/Map.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +130,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -173,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -220,7 +224,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -266,7 +271,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -312,7 +318,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -358,7 +365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -404,7 +412,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -416,7 +425,7 @@
         "groupBy": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/groupBy",
-            "spec_url": "https://tc39.es/proposal-array-grouping/#sec-map.groupby",
+            "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-map.groupby",
             "tags": [
               "web-features:array-group"
             ],
@@ -454,7 +463,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -500,7 +510,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -545,7 +556,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -591,7 +603,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -639,7 +652,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -686,7 +700,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -732,7 +747,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -793,7 +809,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -839,7 +856,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Math.json b/javascript/builtins/Math.json
index b3000fabc8a3f7..d1c783906268e4 100644
--- a/javascript/builtins/Math.json
+++ b/javascript/builtins/Math.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math",
           "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math-object",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -41,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -54,7 +56,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/E",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.e",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -89,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +107,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/LN10",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.ln10",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -138,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -152,7 +158,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/LN2",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.ln2",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -187,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +209,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/LOG10E",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log10e",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -236,7 +245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -250,7 +260,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/LOG2E",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log2e",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -285,7 +296,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -299,7 +311,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/PI",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.pi",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -334,7 +347,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -348,7 +362,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/SQRT1_2",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sqrt1_2",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -383,7 +398,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -397,7 +413,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/SQRT2",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sqrt2",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -432,7 +449,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -446,7 +464,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/abs",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.abs",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -481,7 +500,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -495,7 +515,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/acos",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.acos",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -530,7 +551,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -544,7 +566,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/acosh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.acosh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -575,7 +598,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -589,7 +613,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/asin",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.asin",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -624,7 +649,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -638,7 +664,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/asinh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.asinh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -669,7 +696,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -683,7 +711,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/atan",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.atan",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -718,7 +747,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -732,7 +762,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/atan2",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.atan2",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -767,7 +798,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -781,7 +813,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/atanh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.atanh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -812,7 +845,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
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@@ -826,7 +860,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/cbrt",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.cbrt",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -857,7 +892,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -871,7 +907,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/ceil",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.ceil",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -906,7 +943,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -920,7 +958,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.clz32",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -951,7 +990,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -965,7 +1005,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/cos",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.cos",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1000,7 +1041,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1014,7 +1056,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/cosh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.cosh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1045,7 +1088,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1059,7 +1103,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/exp",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.exp",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1094,7 +1139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1108,7 +1154,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/expm1",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.expm1",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1139,7 +1186,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1182,7 +1230,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1196,7 +1245,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/floor",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.floor",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1231,7 +1281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1245,7 +1296,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/fround",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.fround",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1276,7 +1328,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1290,7 +1343,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/hypot",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.hypot",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1321,7 +1375,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1335,7 +1390,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/imul",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.imul",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1368,7 +1424,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1382,7 +1439,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/log",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1417,7 +1475,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1431,7 +1490,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/log10",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log10",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1462,7 +1522,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1476,7 +1537,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/log1p",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log1p",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1507,7 +1569,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1521,7 +1584,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/log2",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.log2",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1552,7 +1616,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1566,7 +1631,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/max",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.max",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1601,7 +1667,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1615,7 +1682,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/min",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.min",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1650,7 +1718,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1664,7 +1733,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/pow",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.pow",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1699,7 +1769,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1713,7 +1784,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/random",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.random",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1748,7 +1820,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1762,7 +1835,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/round",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.round",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1797,7 +1871,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1811,7 +1886,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/sign",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sign",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1842,7 +1918,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1856,7 +1933,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/sin",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sin",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1891,7 +1969,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1905,7 +1984,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/sinh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sinh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1936,7 +2016,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1950,7 +2031,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/sqrt",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.sqrt",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1985,7 +2067,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1999,7 +2082,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/tan",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.tan",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -2034,7 +2118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2048,7 +2133,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/tanh",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.tanh",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -2079,7 +2165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2093,7 +2180,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-math.trunc",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -2124,7 +2212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Number.json b/javascript/builtins/Number.json
index 40f56297b407c6..8945e3665fb3bb 100644
--- a/javascript/builtins/Number.json
+++ b/javascript/builtins/Number.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number",
           "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -41,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -54,7 +56,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/EPSILON",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.epsilon",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -85,7 +88,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +103,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.max_safe_integer",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -130,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -144,7 +150,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_VALUE",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.max_value",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -179,7 +186,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,7 +201,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/MIN_SAFE_INTEGER",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.min_safe_integer",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -224,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -238,7 +248,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/MIN_VALUE",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.min_value",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -273,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,7 +299,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/NaN",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.nan",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -322,7 +335,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -336,7 +350,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/NEGATIVE_INFINITY",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.negative_infinity",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -371,7 +386,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -386,7 +402,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/Number",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -421,7 +438,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -435,7 +453,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/POSITIVE_INFINITY",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.positive_infinity",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -470,7 +489,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -484,7 +504,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.isfinite",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -515,7 +536,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -529,7 +551,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.isinteger",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -560,7 +583,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -574,7 +598,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.isnan",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -605,7 +630,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -619,7 +645,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.issafeinteger",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -650,7 +677,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -664,7 +692,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/parseFloat",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.parsefloat",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -695,7 +724,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -709,7 +739,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/parseInt",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.parseint",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -740,7 +771,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -754,7 +786,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/toExponential",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.prototype.toexponential",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -789,7 +822,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -803,7 +837,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.prototype.tofixed",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -838,7 +873,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -855,7 +891,8 @@
               "https://tc39.es/ecma402/#sup-number.prototype.tolocalestring"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -892,7 +929,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -903,6 +941,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -951,7 +992,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -963,6 +1005,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -996,7 +1041,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1011,7 +1057,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/toPrecision",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.prototype.toprecision",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1046,7 +1093,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1060,7 +1108,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/toString",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.prototype.tostring",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1095,7 +1144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1109,7 +1159,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/valueOf",
             "spec_url": "https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number.prototype.valueof",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:number"
             ],
             "support": {
               "chrome": {
@@ -1144,7 +1195,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Object.json b/javascript/builtins/Object.json
index fb20946e023640..d9814330faade1 100644
--- a/javascript/builtins/Object.json
+++ b/javascript/builtins/Object.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +184,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,7 +236,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -284,7 +289,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -335,7 +341,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -395,7 +402,8 @@
                 "notes": "Also supported in Safari for iOS 4.2, but not on DOM objects."
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -447,7 +455,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -492,7 +501,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -541,7 +551,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -584,7 +595,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -642,7 +654,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -687,7 +700,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -738,7 +752,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -783,7 +798,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -834,7 +850,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -846,7 +863,7 @@
         "groupBy": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy",
-            "spec_url": "https://tc39.es/proposal-array-grouping/#sec-object.groupby",
+            "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-object.groupby",
             "tags": [
               "web-features:array-group"
             ],
@@ -884,7 +901,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -927,7 +945,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -978,7 +997,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1023,7 +1043,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1072,7 +1093,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1121,7 +1143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1172,7 +1195,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1221,7 +1245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1272,7 +1297,8 @@
                 "version_added": "5"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1321,7 +1347,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1370,7 +1397,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1419,7 +1447,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1462,7 +1491,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1514,7 +1544,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1566,7 +1597,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1615,7 +1647,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1660,7 +1693,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1674,7 +1708,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString",
             "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.prototype.tolocalestring",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -1709,7 +1744,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1759,7 +1795,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1808,7 +1845,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1853,7 +1891,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Promise.json b/javascript/builtins/Promise.json
index 5c105dcd3567b5..884a40f79869c3 100644
--- a/javascript/builtins/Promise.json
+++ b/javascript/builtins/Promise.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -87,7 +88,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +182,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -223,7 +227,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,7 +275,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -317,7 +323,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -358,7 +365,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -405,7 +413,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -452,7 +461,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -499,7 +509,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -546,7 +557,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -559,6 +571,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise/try",
             "spec_url": "https://tc39.es/proposal-promise-try/#sec-promise.try",
+            "tags": [
+              "web-features:promise-try"
+            ],
             "support": {
               "chrome": {
                 "version_added": "128"
@@ -586,7 +601,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -598,7 +614,7 @@
         "withResolvers": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise/withResolvers",
-            "spec_url": "https://tc39.es/proposal-promise-with-resolvers/#sec-promise.withResolvers",
+            "spec_url": "https://tc39.es/ecma262/multipage/control-abstraction-objects.html#sec-promise.withResolvers",
             "tags": [
               "web-features:promise-withresolvers"
             ],
@@ -629,7 +645,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -673,7 +690,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Proxy.json b/javascript/builtins/Proxy.json
index be5464f2a2ed5f..df302eb48d0b09 100644
--- a/javascript/builtins/Proxy.json
+++ b/javascript/builtins/Proxy.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy",
           "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-proxy-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:proxy-reflect"
           ],
           "support": {
             "chrome": {
@@ -37,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -51,7 +53,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-proxy-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -82,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +101,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/apply",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-call-thisargument-argumentslist",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -128,7 +133,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -142,7 +148,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/construct",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-construct-argumentslist-newtarget",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -173,7 +180,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -187,7 +195,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/defineProperty",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-defineownproperty-p-desc",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -218,7 +227,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -232,7 +242,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/deleteProperty",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-delete-p",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -263,7 +274,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -277,7 +289,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/get",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -308,7 +321,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -322,7 +336,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/getOwnPropertyDescriptor",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-getownproperty-p",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -353,7 +368,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -367,7 +383,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/getPrototypeOf",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-getprototypeof",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -396,7 +413,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -410,7 +428,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/has",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-hasproperty-p",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -441,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -455,7 +475,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/isExtensible",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-isextensible",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -486,7 +507,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -500,7 +522,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/ownKeys",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -532,7 +555,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -546,7 +570,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/preventExtensions",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-preventextensions",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -577,7 +602,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -591,7 +617,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/set",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-set-p-v-receiver",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -622,7 +649,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -636,7 +664,8 @@
               "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/setPrototypeOf",
               "spec_url": "https://tc39.es/ecma262/multipage/ordinary-and-exotic-objects-behaviours.html#sec-proxy-object-internal-methods-and-internal-slots-setprototypeof-v",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:proxy-reflect"
               ],
               "support": {
                 "chrome": {
@@ -667,7 +696,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -682,7 +712,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/revocable",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-proxy.revocable",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -713,7 +744,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/RangeError.json b/javascript/builtins/RangeError.json
index 39a591f2ca2da8..b10d42afe607c5 100644
--- a/javascript/builtins/RangeError.json
+++ b/javascript/builtins/RangeError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/ReferenceError.json b/javascript/builtins/ReferenceError.json
index 1206cd7b01bc9e..273aa5d12ce517 100644
--- a/javascript/builtins/ReferenceError.json
+++ b/javascript/builtins/ReferenceError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Reflect.json b/javascript/builtins/Reflect.json
index 258e97bc1b6879..deff53983b460f 100644
--- a/javascript/builtins/Reflect.json
+++ b/javascript/builtins/Reflect.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect",
           "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect-object",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:proxy-reflect"
           ],
           "support": {
             "chrome": {
@@ -37,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -50,7 +52,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/apply",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.apply",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -81,7 +84,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +99,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/construct",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.construct",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -126,7 +131,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -140,7 +146,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/defineProperty",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.defineproperty",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -171,7 +178,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +193,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/deleteProperty",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.deleteproperty",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -216,7 +225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +240,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/get",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.get",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -261,7 +272,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -275,7 +287,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/getOwnPropertyDescriptor",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.getownpropertydescriptor",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -306,7 +319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -320,7 +334,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/getPrototypeOf",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.getprototypeof",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -351,7 +366,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -365,7 +381,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/has",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.has",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -396,7 +413,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -410,7 +428,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/isExtensible",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.isextensible",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -441,7 +460,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -455,7 +475,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/ownKeys",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.ownkeys",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -486,7 +507,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -500,7 +522,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/preventExtensions",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.preventextensions",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -531,7 +554,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -545,7 +569,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/set",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.set",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -576,7 +601,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -590,7 +616,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Reflect/setPrototypeOf",
             "spec_url": "https://tc39.es/ecma262/multipage/reflection.html#sec-reflect.setprototypeof",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:proxy-reflect"
             ],
             "support": {
               "chrome": {
@@ -621,7 +648,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/RegExp.json b/javascript/builtins/RegExp.json
index 0c5b5ff825bb33..0717e6b8537f4b 100644
--- a/javascript/builtins/RegExp.json
+++ b/javascript/builtins/RegExp.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp-regular-expression-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -41,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -55,7 +57,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/RegExp",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -90,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +143,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +158,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/dotAll",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.dotAll",
             "tags": [
-              "web-features:snapshot:ecmascript-2018"
+              "web-features:snapshot:ecmascript-2018",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -182,7 +188,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -196,7 +203,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype.exec",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -231,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,7 +254,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/flags",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.flags",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -278,7 +288,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -292,7 +303,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/global",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.global",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -327,7 +339,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -338,6 +351,9 @@
           "prototype_accessor": {
             "__compat": {
               "description": "Prototype accessor property (ES2015)",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "48"
@@ -367,7 +383,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -382,7 +399,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/hasIndices",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.hasIndices",
             "tags": [
-              "web-features:snapshot:ecmascript-2022"
+              "web-features:snapshot:ecmascript-2022",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -411,7 +429,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -425,7 +444,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/ignoreCase",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.ignorecase",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -460,7 +480,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -471,6 +492,9 @@
           "prototype_accessor": {
             "__compat": {
               "description": "Prototype accessor property (ES2015)",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "48"
@@ -500,7 +524,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -546,7 +571,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -560,7 +586,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/lastIndex",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-properties-of-regexp-instances",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -595,7 +622,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -644,7 +672,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -693,7 +722,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -742,7 +772,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -756,7 +787,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/multiline",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.multiline",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -791,7 +823,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -802,6 +835,9 @@
           "prototype_accessor": {
             "__compat": {
               "description": "Prototype accessor property (ES2015)",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "48"
@@ -831,7 +867,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -879,7 +916,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -928,7 +966,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -942,7 +981,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/source",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.source",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -977,7 +1017,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -988,6 +1029,9 @@
           "empty_regex_string": {
             "__compat": {
               "description": "\"(?:)\" for empty regexps",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "6"
@@ -1019,7 +1063,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1030,7 +1075,10 @@
           },
           "escaping": {
             "__compat": {
-              "description": "Escaping",
+              "description": "Line breaks and slashes are escaped",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "73"
@@ -1060,7 +1108,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1072,6 +1121,9 @@
           "prototype_accessor": {
             "__compat": {
               "description": "Prototype accessor property (ES2015)",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "48"
@@ -1101,7 +1153,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1115,6 +1168,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/sticky",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.sticky",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "49"
@@ -1144,7 +1200,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1155,6 +1212,9 @@
           "anchored_sticky_flag": {
             "__compat": {
               "description": "Anchored sticky flag behavior per ES2015",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "49"
@@ -1184,7 +1244,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1196,6 +1257,9 @@
           "prototype_accessor": {
             "__compat": {
               "description": "Prototype accessor property (ES2015)",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "49"
@@ -1225,7 +1289,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1240,7 +1305,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/test",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype.test",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1275,7 +1341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1289,7 +1356,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/toString",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype.tostring",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1324,7 +1392,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1334,7 +1403,10 @@
           },
           "escaping": {
             "__compat": {
-              "description": "Escaping",
+              "description": "Line breaks and slashes are escaped",
+              "tags": [
+                "web-features:regexp"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "73"
@@ -1364,7 +1436,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1378,6 +1451,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/unicode",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.unicode",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "50"
@@ -1409,7 +1485,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1422,6 +1499,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/unicodeSets",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp.prototype.unicodesets",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "112"
@@ -1449,7 +1529,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1464,7 +1545,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.match",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype-%symbol.match%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1495,7 +1577,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1509,6 +1592,9 @@
             "description": "[Symbol.matchAll]",
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.matchAll",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp-prototype-%symbol.matchall%",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "73"
@@ -1538,7 +1624,8 @@
               "samsunginternet_android": {
                 "version_added": "5.0"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1553,7 +1640,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.replace",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype-%symbol.replace%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1582,7 +1670,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1597,7 +1686,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.search",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype-%symbol.search%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1628,7 +1718,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1643,7 +1734,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.species",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-get-regexp-%symbol.species%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1674,7 +1766,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1689,7 +1782,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RegExp/Symbol.split",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype-%symbol.split%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:regexp"
             ],
             "support": {
               "chrome": {
@@ -1718,7 +1812,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Set.json b/javascript/builtins/Set.json
index f8b081d7eeb5fe..c11897efa761b4 100644
--- a/javascript/builtins/Set.json
+++ b/javascript/builtins/Set.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -84,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -128,7 +130,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -173,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -222,7 +226,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -314,7 +320,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -357,7 +364,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -403,7 +411,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -449,7 +458,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -495,7 +505,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -538,7 +549,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -581,7 +593,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -624,7 +637,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -667,7 +681,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -712,7 +727,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -758,7 +774,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -805,7 +822,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -848,7 +866,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -891,7 +910,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -937,7 +957,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -998,7 +1019,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1044,7 +1066,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/SharedArrayBuffer.json b/javascript/builtins/SharedArrayBuffer.json
index 10ab01e3548d40..8812050b6dd6d1 100644
--- a/javascript/builtins/SharedArrayBuffer.json
+++ b/javascript/builtins/SharedArrayBuffer.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer",
           "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2017"
+            "web-features:snapshot:ecmascript-2017",
+            "web-features:shared-memory"
           ],
           "support": {
             "chrome": {
@@ -39,7 +40,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -53,7 +55,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/SharedArrayBuffer",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -86,7 +89,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +103,8 @@
               "description": "<code>maxByteLength</code> option",
               "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer-constructor",
               "tags": [
-                "web-features:snapshot:ecmascript-2024"
+                "web-features:snapshot:ecmascript-2024",
+                "web-features:resizable-buffers"
               ],
               "support": {
                 "chrome": {
@@ -130,7 +135,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -145,7 +151,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/byteLength",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-sharedarraybuffer.prototype.bytelength",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -178,7 +185,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -192,7 +200,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/grow",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer.prototype.grow",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -223,7 +232,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +247,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/growable",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-sharedarraybuffer.prototype.growable",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -268,7 +279,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -282,7 +294,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/maxByteLength",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-get-sharedarraybuffer.prototype.maxbytelength",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:resizable-buffers"
             ],
             "support": {
               "chrome": {
@@ -313,7 +326,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -327,7 +341,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/slice",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer.prototype.slice",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -360,7 +375,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -375,7 +391,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/Symbol.species",
             "spec_url": "https://tc39.es/ecma262/multipage/structured-data.html#sec-sharedarraybuffer-%symbol.species%",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:shared-memory"
             ],
             "support": {
               "chrome": {
@@ -408,7 +425,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": false
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/String.json b/javascript/builtins/String.json
index 3741affb84938d..a7d6dfb0618e31 100644
--- a/javascript/builtins/String.json
+++ b/javascript/builtins/String.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:strings"
           ],
           "support": {
             "chrome": {
@@ -41,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -55,7 +57,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/String",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -90,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +146,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -156,7 +161,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/at",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.at",
             "tags": [
-              "web-features:snapshot:ecmascript-2022"
+              "web-features:snapshot:ecmascript-2022",
+              "web-features:string-at"
             ],
             "support": {
               "chrome": {
@@ -185,7 +191,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -283,7 +291,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -332,7 +341,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -346,7 +356,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/charAt",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.charat",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -381,7 +392,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -395,7 +407,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.charcodeat",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -430,7 +443,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -444,7 +458,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.codepointat",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-codepoint"
             ],
             "support": {
               "chrome": {
@@ -475,7 +490,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -489,7 +505,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/concat",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.concat",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -524,7 +541,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -538,7 +556,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.endswith",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-startsends-with"
             ],
             "support": {
               "chrome": {
@@ -571,7 +590,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -620,7 +640,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -669,7 +690,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -718,7 +740,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -732,7 +755,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.fromcharcode",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -767,7 +791,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -781,7 +806,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.fromcodepoint",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-codepoint"
             ],
             "support": {
               "chrome": {
@@ -812,7 +838,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -826,7 +853,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/includes",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.includes",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-includes"
             ],
             "support": {
               "chrome": {
@@ -864,7 +892,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -878,7 +907,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.indexof",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -913,7 +943,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -926,6 +957,9 @@
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/isWellFormed",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.iswellformed",
+            "tags": [
+              "web-features:string-wellformed"
+            ],
             "support": {
               "chrome": {
                 "version_added": "111"
@@ -953,7 +987,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1002,7 +1037,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1016,7 +1052,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/lastIndexOf",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.lastindexof",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1051,7 +1088,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1065,7 +1103,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/length",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-properties-of-string-instances-length",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1100,7 +1139,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1149,7 +1189,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1166,7 +1207,8 @@
               "https://tc39.es/ecma402/#sup-String.prototype.localeCompare"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -1203,7 +1245,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1214,6 +1257,9 @@
           "locales_parameter": {
             "__compat": {
               "description": "<code>locales</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1266,7 +1312,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1278,6 +1325,9 @@
           "options_parameter": {
             "__compat": {
               "description": "<code>options</code> parameter",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "24"
@@ -1315,7 +1365,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1330,7 +1381,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/match",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.match",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1365,7 +1417,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1379,7 +1432,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/matchAll",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.matchall",
             "tags": [
-              "web-features:snapshot:ecmascript-2020"
+              "web-features:snapshot:ecmascript-2020",
+              "web-features:string-matchall"
             ],
             "support": {
               "chrome": {
@@ -1408,7 +1462,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1422,7 +1477,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/normalize",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.normalize",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-normalize"
             ],
             "support": {
               "chrome": {
@@ -1453,7 +1509,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1467,7 +1524,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/padEnd",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.padend",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:string-pad"
             ],
             "support": {
               "chrome": {
@@ -1498,7 +1556,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1512,7 +1571,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/padStart",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.padstart",
             "tags": [
-              "web-features:snapshot:ecmascript-2017"
+              "web-features:snapshot:ecmascript-2017",
+              "web-features:string-pad"
             ],
             "support": {
               "chrome": {
@@ -1543,7 +1603,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1557,7 +1618,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/raw",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.raw",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-raw"
             ],
             "support": {
               "chrome": {
@@ -1588,7 +1650,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1602,7 +1665,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/repeat",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.repeat",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-repeat"
             ],
             "support": {
               "chrome": {
@@ -1639,7 +1703,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "41"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1653,7 +1718,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/replace",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.replace",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1696,7 +1762,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1710,7 +1777,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.replaceall",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:string-replaceall"
             ],
             "support": {
               "chrome": {
@@ -1739,7 +1807,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1753,7 +1822,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/search",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.search",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1788,7 +1858,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1802,7 +1873,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/slice",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.slice",
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1837,7 +1909,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1886,7 +1959,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1900,7 +1974,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/split",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.split",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -1935,7 +2010,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1949,7 +2025,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.startswith",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:string-startsends-with"
             ],
             "support": {
               "chrome": {
@@ -1982,7 +2059,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2031,7 +2109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2080,7 +2159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2129,7 +2209,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2143,7 +2224,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/substring",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.substring",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2178,7 +2260,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2227,7 +2310,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2244,7 +2328,8 @@
               "https://tc39.es/ecma402/#sup-string.prototype.tolocalelowercase"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -2279,7 +2364,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2287,8 +2373,13 @@
               "deprecated": false
             }
           },
-          "locale": {
+          "locales_parameter": {
             "__compat": {
+              "description": "<code>locales</code> parameter",
+              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toLocaleLowerCase#locales",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "58"
@@ -2333,7 +2424,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2351,7 +2443,8 @@
               "https://tc39.es/ecma402/#sup-string.prototype.tolocaleuppercase"
             ],
             "tags": [
-              "web-features:snapshot:ecmascript-3"
+              "web-features:snapshot:ecmascript-3",
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -2386,7 +2479,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2394,8 +2488,13 @@
               "deprecated": false
             }
           },
-          "locale": {
+          "locales_parameter": {
             "__compat": {
+              "description": "<code>locales</code> parameter",
+              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toLocaleUpperCase#locales",
+              "tags": [
+                "web-features:intl"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "58"
@@ -2442,7 +2541,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -2457,7 +2557,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toLowerCase",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.tolowercase",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2492,7 +2593,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2506,7 +2608,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toString",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.tostring",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2541,7 +2644,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2555,7 +2659,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.touppercase",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2590,7 +2695,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2604,7 +2710,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/toWellFormed",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.towellformed",
             "tags": [
-              "web-features:snapshot:ecmascript-2024"
+              "web-features:snapshot:ecmascript-2024",
+              "web-features:string-wellformed"
             ],
             "support": {
               "chrome": {
@@ -2633,7 +2740,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2647,7 +2755,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/trim",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.trim",
             "tags": [
-              "web-features:snapshot:ecmascript-5"
+              "web-features:snapshot:ecmascript-5",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2686,7 +2795,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2700,7 +2810,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/trimEnd",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.trimend",
             "tags": [
-              "web-features:snapshot:ecmascript-2019"
+              "web-features:snapshot:ecmascript-2019",
+              "web-features:string-trim-startend"
             ],
             "support": {
               "chrome": [
@@ -2769,7 +2880,8 @@
                   "alternative_name": "trimRight",
                   "version_added": "≤37"
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2783,7 +2895,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/trimStart",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.trimstart",
             "tags": [
-              "web-features:snapshot:ecmascript-2019"
+              "web-features:snapshot:ecmascript-2019",
+              "web-features:string-trim-startend"
             ],
             "support": {
               "chrome": [
@@ -2852,7 +2965,8 @@
                   "alternative_name": "trimLeft",
                   "version_added": "≤37"
                 }
-              ]
+              ],
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2864,6 +2978,9 @@
         "unicode_code_point_escapes": {
           "__compat": {
             "description": "Unicode code point escapes \\u{xxxxxx}",
+            "tags": [
+              "web-features:strings"
+            ],
             "support": {
               "chrome": {
                 "version_added": "1"
@@ -2897,7 +3014,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2911,7 +3029,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/valueOf",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype.valueof",
             "tags": [
-              "web-features:snapshot:ecmascript-1"
+              "web-features:snapshot:ecmascript-1",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -2946,7 +3065,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2961,7 +3081,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String/Symbol.iterator",
             "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#sec-string.prototype-%symbol.iterator%",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:strings"
             ],
             "support": {
               "chrome": {
@@ -3006,7 +3127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Symbol.json b/javascript/builtins/Symbol.json
index 56bee909d886b6..311c6c820808cb 100644
--- a/javascript/builtins/Symbol.json
+++ b/javascript/builtins/Symbol.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -83,7 +84,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -176,7 +179,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -266,7 +271,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -311,7 +317,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -356,7 +363,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -401,7 +409,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -444,7 +453,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -487,7 +497,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -530,7 +541,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -573,7 +585,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -618,7 +631,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -661,7 +675,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -706,7 +721,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -751,7 +767,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -796,7 +813,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -838,7 +856,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -884,7 +903,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -929,7 +949,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -975,7 +996,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/SyntaxError.json b/javascript/builtins/SyntaxError.json
index 0d0394ffb5858d..bb9f74f8a2d4f9 100644
--- a/javascript/builtins/SyntaxError.json
+++ b/javascript/builtins/SyntaxError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Temporal.json b/javascript/builtins/Temporal.json
index c4449dffa25947..1f0f58d46571e9 100644
--- a/javascript/builtins/Temporal.json
+++ b/javascript/builtins/Temporal.json
@@ -53,7 +53,8 @@
               "version_added": false
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
diff --git a/javascript/builtins/Temporal/Calendar.json b/javascript/builtins/Temporal/Calendar.json
index 77d681970d67f3..cc2d08d17505c0 100644
--- a/javascript/builtins/Temporal/Calendar.json
+++ b/javascript/builtins/Temporal/Calendar.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "Calendar": {
           "__compat": {
-            "description": "Temporal.Calendar interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-calendar-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "Calendar": {
             "__compat": {
-              "description": "Temporal.Calendar constructor",
+              "description": "<code>Calendar()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-calendar-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "dateAdd": {
             "__compat": {
-              "description": "Temporal.Calendar.dateAdd()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.dateadd",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +160,6 @@
           },
           "dateFromFields": {
             "__compat": {
-              "description": "Temporal.Calendar.dateFromFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.datefromfields",
               "tags": [
                 "web-features:temporal"
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "dateUntil": {
             "__compat": {
-              "description": "Temporal.Calendar.dateUntil()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.dateuntil",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "day": {
             "__compat": {
-              "description": "Temporal.Calendar.day()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.day",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "dayOfWeek": {
             "__compat": {
-              "description": "Temporal.Calendar.dayOfWeek()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.dayofweek",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "dayOfYear": {
             "__compat": {
-              "description": "Temporal.Calendar.dayOfYear()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.dayofyear",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "daysInMonth": {
             "__compat": {
-              "description": "Temporal.Calendar.daysInMonth()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.daysinmonth",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "daysInWeek": {
             "__compat": {
-              "description": "Temporal.Calendar.daysInWeek()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.daysinweek",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "daysInYear": {
             "__compat": {
-              "description": "Temporal.Calendar.daysInYear()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.daysinyear",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +576,6 @@
           },
           "era": {
             "__compat": {
-              "description": "Temporal.Calendar.era()",
               "tags": [
                 "web-features:temporal"
               ],
@@ -615,7 +615,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -626,7 +627,6 @@
           },
           "eraYear": {
             "__compat": {
-              "description": "Temporal.Calendar.eraYear()",
               "tags": [
                 "web-features:temporal"
               ],
@@ -666,7 +666,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -677,7 +678,6 @@
           },
           "fields": {
             "__compat": {
-              "description": "Temporal.Calendar.fields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.fields",
               "tags": [
                 "web-features:temporal"
@@ -718,7 +718,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -729,7 +730,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.Calendar.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.from",
               "tags": [
                 "web-features:temporal"
@@ -770,7 +770,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -781,7 +782,6 @@
           },
           "id": {
             "__compat": {
-              "description": "Temporal.Calendar.id",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.calendar.prototype.id",
               "tags": [
                 "web-features:temporal"
@@ -822,7 +822,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -833,7 +834,6 @@
           },
           "inLeapYear": {
             "__compat": {
-              "description": "Temporal.Calendar.inLeapYear()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.inleapyear",
               "tags": [
                 "web-features:temporal"
@@ -874,7 +874,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -885,7 +886,6 @@
           },
           "mergeFields": {
             "__compat": {
-              "description": "Temporal.Calendar.mergeFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.mergefields",
               "tags": [
                 "web-features:temporal"
@@ -926,7 +926,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -937,7 +938,6 @@
           },
           "month": {
             "__compat": {
-              "description": "Temporal.Calendar.month()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.month",
               "tags": [
                 "web-features:temporal"
@@ -978,7 +978,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -989,7 +990,6 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.Calendar.monthCode()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
@@ -1030,7 +1030,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +1042,6 @@
           },
           "monthDayFromFields": {
             "__compat": {
-              "description": "Temporal.Calendar.monthDayFromFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.monthdayfromfields",
               "tags": [
                 "web-features:temporal"
@@ -1082,7 +1082,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1093,7 +1094,6 @@
           },
           "monthsInYear": {
             "__compat": {
-              "description": "Temporal.Calendar.monthsInYear()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.monthsinyear",
               "tags": [
                 "web-features:temporal"
@@ -1134,7 +1134,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1145,7 +1146,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.Calendar.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -1186,7 +1186,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1197,7 +1198,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.Calendar.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1238,7 +1238,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1249,7 +1250,6 @@
           },
           "weekOfYear": {
             "__compat": {
-              "description": "Temporal.Calendar.weekOfYear()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.weekofyear",
               "tags": [
                 "web-features:temporal"
@@ -1290,7 +1290,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1301,7 +1302,6 @@
           },
           "year": {
             "__compat": {
-              "description": "Temporal.Calendar.year()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.year",
               "tags": [
                 "web-features:temporal"
@@ -1342,7 +1342,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1353,7 +1354,6 @@
           },
           "yearMonthFromFields": {
             "__compat": {
-              "description": "Temporal.Calendar.yearMonthFromFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.yearmonthfromfields",
               "tags": [
                 "web-features:temporal"
@@ -1394,7 +1394,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/Duration.json b/javascript/builtins/Temporal/Duration.json
index ce9c726b8cde00..4fa048f28bd6ea 100644
--- a/javascript/builtins/Temporal/Duration.json
+++ b/javascript/builtins/Temporal/Duration.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "Duration": {
           "__compat": {
-            "description": "Temporal.Duration interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-duration-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "Duration": {
             "__compat": {
-              "description": "Temporal.Duration constructor",
+              "description": "<code>Duration()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-duration-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "abs": {
             "__compat": {
-              "description": "Temporal.Duration.abs()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.abs",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +160,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.Duration.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "blank": {
             "__compat": {
-              "description": "Temporal.Duration.blank",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.blank",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.Duration.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.compare",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "days": {
             "__compat": {
-              "description": "Temporal.Duration.days",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.days",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.Duration.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.from",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "hours": {
             "__compat": {
-              "description": "Temporal.Duration.hours",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.hours",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "microseconds": {
             "__compat": {
-              "description": "Temporal.Duration.microseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.microseconds",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "milliseconds": {
             "__compat": {
-              "description": "Temporal.Duration.milliseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.milliseconds",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +576,6 @@
           },
           "minutes": {
             "__compat": {
-              "description": "Temporal.Duration.minutes",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.minutes",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +628,6 @@
           },
           "months": {
             "__compat": {
-              "description": "Temporal.Duration.months",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.months",
               "tags": [
                 "web-features:temporal"
@@ -668,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -679,7 +680,6 @@
           },
           "nanoseconds": {
             "__compat": {
-              "description": "Temporal.Duration.nanoseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.nanoseconds",
               "tags": [
                 "web-features:temporal"
@@ -720,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -731,7 +732,6 @@
           },
           "negated": {
             "__compat": {
-              "description": "Temporal.Duration.negated()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.negated",
               "tags": [
                 "web-features:temporal"
@@ -772,7 +772,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -783,7 +784,6 @@
           },
           "round": {
             "__compat": {
-              "description": "Temporal.Duration.round()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.round",
               "tags": [
                 "web-features:temporal"
@@ -824,7 +824,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -835,7 +836,6 @@
           },
           "seconds": {
             "__compat": {
-              "description": "Temporal.Duration.seconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.seconds",
               "tags": [
                 "web-features:temporal"
@@ -876,7 +876,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -887,7 +888,6 @@
           },
           "sign": {
             "__compat": {
-              "description": "Temporal.Duration.sign",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.sign",
               "tags": [
                 "web-features:temporal"
@@ -928,7 +928,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -939,7 +940,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.Duration.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -980,7 +980,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -991,7 +992,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.Duration.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -1032,7 +1032,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1043,7 +1044,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.Duration.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -1084,7 +1084,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1095,7 +1096,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.Duration.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1136,7 +1136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1147,7 +1148,6 @@
           },
           "total": {
             "__compat": {
-              "description": "Temporal.Duration.total()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.total",
               "tags": [
                 "web-features:temporal"
@@ -1188,7 +1188,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1199,7 +1200,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.Duration.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -1240,7 +1240,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1251,7 +1252,6 @@
           },
           "weeks": {
             "__compat": {
-              "description": "Temporal.Duration.weeks",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.weeks",
               "tags": [
                 "web-features:temporal"
@@ -1292,7 +1292,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1303,7 +1304,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.Duration.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.duration.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -1344,7 +1344,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1355,7 +1356,6 @@
           },
           "years": {
             "__compat": {
-              "description": "Temporal.Duration.years",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.years",
               "tags": [
                 "web-features:temporal"
@@ -1396,7 +1396,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/Instant.json b/javascript/builtins/Temporal/Instant.json
index dac77140d011f1..3036f06ad240bb 100644
--- a/javascript/builtins/Temporal/Instant.json
+++ b/javascript/builtins/Temporal/Instant.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "Instant": {
           "__compat": {
-            "description": "Temporal.Instant interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-instant-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,8 +55,8 @@
           },
           "Instant": {
             "__compat": {
-              "description": "Temporal.Instant constructor",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-instant-objects",
+              "description": "<code>Instant()</code> constructor",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-instant-constructor",
               "tags": [
                 "web-features:temporal"
               ],
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.Instant.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +160,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.Instant.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.compare",
               "tags": [
                 "web-features:temporal"
@@ -200,59 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "epochMicroseconds": {
-            "__compat": {
-              "description": "Temporal.Instant.epochMicroseconds",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochmicroseconds",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": "preview",
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +212,6 @@
           },
           "epochMilliseconds": {
             "__compat": {
-              "description": "Temporal.Instant.epochMilliseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochmilliseconds",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +264,6 @@
           },
           "epochNanoseconds": {
             "__compat": {
-              "description": "Temporal.Instant.epochNanoseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochnanoseconds",
               "tags": [
                 "web-features:temporal"
@@ -356,59 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "epochSeconds": {
-            "__compat": {
-              "description": "Temporal.Instant.epochSeconds",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochseconds",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": "preview",
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +316,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.Instant.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +368,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.Instant.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.from",
               "tags": [
                 "web-features:temporal"
@@ -512,59 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "fromEpochMicroseconds": {
-            "__compat": {
-              "description": "Temporal.Instant.fromEpochMicroseconds()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.fromepochseconds",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": "preview",
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +420,6 @@
           },
           "fromEpochMilliseconds": {
             "__compat": {
-              "description": "Temporal.Instant.fromEpochMilliseconds()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.fromepochmilliseconds",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +472,6 @@
           },
           "fromEpochNanoseconds": {
             "__compat": {
-              "description": "Temporal.Instant.fromEpochNanoseconds()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.fromepochnanoseconds",
               "tags": [
                 "web-features:temporal"
@@ -668,59 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "fromEpochSeconds": {
-            "__compat": {
-              "description": "Temporal.Instant.fromEpochSeconds()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.fromepochseconds",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": "preview",
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -731,7 +524,6 @@
           },
           "round": {
             "__compat": {
-              "description": "Temporal.Instant.round()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.round",
               "tags": [
                 "web-features:temporal"
@@ -772,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -783,7 +576,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.Instant.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -824,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -835,7 +628,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.Instant.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -876,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -887,7 +680,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.Instant.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -928,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -939,7 +732,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.Instant.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -980,7 +772,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -991,7 +784,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.Instant.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1032,59 +824,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toZonedDateTime": {
-            "__compat": {
-              "description": "Temporal.Instant.toZonedDateTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.tozoneddatetime",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1095,7 +836,6 @@
           },
           "toZonedDateTimeISO": {
             "__compat": {
-              "description": "Temporal.Instant.toZonedDateTimeISO()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.tozoneddatetimeiso",
               "tags": [
                 "web-features:temporal"
@@ -1136,7 +876,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1147,7 +888,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.Instant.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -1188,7 +928,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1199,7 +940,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.Instant.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -1240,7 +980,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/Now.json b/javascript/builtins/Temporal/Now.json
index 32a674af21af25..a9fcb5641bdba3 100644
--- a/javascript/builtins/Temporal/Now.json
+++ b/javascript/builtins/Temporal/Now.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "Now": {
           "__compat": {
-            "description": "Temporal.Now interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-now-object",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,6 @@
           },
           "instant": {
             "__compat": {
-              "description": "Temporal.Now.instant()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.instant",
               "tags": [
                 "web-features:temporal"
@@ -96,59 +95,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "plainDate": {
-            "__compat": {
-              "description": "Temporal.Now.plainDate()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.plaindate",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +107,6 @@
           },
           "plainDateISO": {
             "__compat": {
-              "description": "Temporal.Now.plainDateISO()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.plaindateiso",
               "tags": [
                 "web-features:temporal"
@@ -200,59 +147,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "plainDateTime": {
-            "__compat": {
-              "description": "Temporal.Now.plainDateTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.plaindatetime",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +159,6 @@
           },
           "plainDateTimeISO": {
             "__compat": {
-              "description": "Temporal.Now.plainDateTimeISO()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.plaindatetimeiso",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +199,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -313,10 +209,9 @@
               }
             }
           },
-          "timeZone": {
+          "plainTimeISO": {
             "__compat": {
-              "description": "Temporal.Now.timeZone()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.timezone",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.plaintimeiso",
               "tags": [
                 "web-features:temporal"
               ],
@@ -356,7 +251,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -365,10 +261,9 @@
               }
             }
           },
-          "zonedDateTime": {
+          "timeZoneID": {
             "__compat": {
-              "description": "Temporal.Now.zonedDateTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.zoneddatetime",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.timezoneid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -408,7 +303,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +315,6 @@
           },
           "zonedDateTimeISO": {
             "__compat": {
-              "description": "Temporal.Now.zonedDateTimeISO()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.now.zoneddatetimeiso",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +355,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/PlainDate.json b/javascript/builtins/Temporal/PlainDate.json
index 19ccef806e48dc..703543bbb31615 100644
--- a/javascript/builtins/Temporal/PlainDate.json
+++ b/javascript/builtins/Temporal/PlainDate.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "PlainDate": {
           "__compat": {
-            "description": "Temporal.PlainDate interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plaindate-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "PlainDate": {
             "__compat": {
-              "description": "Temporal.PlainDate constructor",
+              "description": "<code>PlainDate()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plaindate-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.PlainDate.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -157,10 +158,9 @@
               }
             }
           },
-          "calendar": {
+          "calendarId": {
             "__compat": {
-              "description": "Temporal.PlainDate.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.calendar",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.calendarid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.PlainDate.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.compare",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "day": {
             "__compat": {
-              "description": "Temporal.PlainDate.day",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.day",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "dayOfWeek": {
             "__compat": {
-              "description": "Temporal.PlainDate.dayOfWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.dayofweek",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "dayOfYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.dayOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.dayofyear",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "daysInMonth": {
             "__compat": {
-              "description": "Temporal.PlainDate.daysInMonth",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.daysinmonth",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "daysInWeek": {
             "__compat": {
-              "description": "Temporal.PlainDate.daysInWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.daysinweek",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "daysInYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.daysInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.daysinyear",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +576,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.PlainDate.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +628,6 @@
           },
           "era": {
             "__compat": {
-              "description": "Temporal.PlainDate.era",
               "tags": [
                 "web-features:temporal"
               ],
@@ -667,7 +667,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -678,7 +679,6 @@
           },
           "eraYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.eraYear",
               "tags": [
                 "web-features:temporal"
               ],
@@ -718,7 +718,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -729,7 +730,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.PlainDate.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.from",
               "tags": [
                 "web-features:temporal"
@@ -770,7 +770,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -781,7 +782,6 @@
           },
           "getISOFields": {
             "__compat": {
-              "description": "Temporal.PlainDate.getISOFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
@@ -822,7 +822,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -833,7 +834,6 @@
           },
           "inLeapYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.inLeapYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.inleapyear",
               "tags": [
                 "web-features:temporal"
@@ -874,7 +874,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -885,7 +886,6 @@
           },
           "month": {
             "__compat": {
-              "description": "Temporal.PlainDate.month",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.month",
               "tags": [
                 "web-features:temporal"
@@ -926,7 +926,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -937,8 +938,7 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.PlainDate.monthCode",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.monthCode",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
               ],
@@ -978,7 +978,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -989,7 +990,6 @@
           },
           "monthsInYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.monthsInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.monthsinyear",
               "tags": [
                 "web-features:temporal"
@@ -1030,7 +1030,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +1042,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.PlainDate.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -1082,7 +1082,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1093,7 +1094,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.PlainDate.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -1134,7 +1134,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1145,7 +1146,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.PlainDate.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -1186,7 +1186,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1197,7 +1198,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.PlainDate.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -1238,7 +1238,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1249,7 +1250,6 @@
           },
           "toPlainDateTime": {
             "__compat": {
-              "description": "Temporal.PlainDate.toPlainDateTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.toplaindatetime",
               "tags": [
                 "web-features:temporal"
@@ -1290,7 +1290,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1301,7 +1302,6 @@
           },
           "toPlainMonthDay": {
             "__compat": {
-              "description": "Temporal.PlainDate.toPlainMonthDay()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.toplainmonthday",
               "tags": [
                 "web-features:temporal"
@@ -1342,7 +1342,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1353,7 +1354,6 @@
           },
           "toPlainYearMonth": {
             "__compat": {
-              "description": "Temporal.PlainDate.toPlainYearMonth()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.toplainyearmonth",
               "tags": [
                 "web-features:temporal"
@@ -1394,7 +1394,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1405,7 +1406,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.PlainDate.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1446,7 +1446,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1457,7 +1458,6 @@
           },
           "toZonedDateTime": {
             "__compat": {
-              "description": "Temporal.PlainDate.toZonedDateTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.tozoneddatetime",
               "tags": [
                 "web-features:temporal"
@@ -1498,7 +1498,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1509,7 +1510,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.PlainDate.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -1550,7 +1550,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1561,7 +1562,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.PlainDate.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -1602,7 +1602,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1613,7 +1614,6 @@
           },
           "weekOfYear": {
             "__compat": {
-              "description": "Temporal.PlainDate.weekOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.weekofyear",
               "tags": [
                 "web-features:temporal"
@@ -1654,7 +1654,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1665,7 +1666,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.PlainDate.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -1706,7 +1706,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1717,7 +1718,6 @@
           },
           "withCalendar": {
             "__compat": {
-              "description": "Temporal.PlainDate.withCalendar()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindate.prototype.withcalendar",
               "tags": [
                 "web-features:temporal"
@@ -1758,7 +1758,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1769,7 +1770,6 @@
           },
           "year": {
             "__compat": {
-              "description": "Temporal.PlainDate.year",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.year",
               "tags": [
                 "web-features:temporal"
@@ -1810,7 +1810,60 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
+              },
+              "status": {
+                "experimental": true,
+                "standard_track": true,
+                "deprecated": false
+              }
+            }
+          },
+          "yearOfWeek": {
+            "__compat": {
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindate.prototype.yearofweek",
+              "tags": [
+                "web-features:temporal"
+              ],
+              "support": {
+                "chrome": {
+                  "version_added": false,
+                  "impl_url": "https://crbug.com/v8/11544"
+                },
+                "chrome_android": "mirror",
+                "deno": {
+                  "version_added": "1.40",
+                  "flags": [
+                    {
+                      "type": "runtime_flag",
+                      "name": "--unstable-temporal"
+                    }
+                  ]
+                },
+                "edge": "mirror",
+                "firefox": {
+                  "version_added": false,
+                  "impl_url": "https://bugzil.la/1519167"
+                },
+                "firefox_android": "mirror",
+                "ie": {
+                  "version_added": false
+                },
+                "nodejs": {
+                  "version_added": false
+                },
+                "oculus": "mirror",
+                "opera": "mirror",
+                "opera_android": "mirror",
+                "safari": {
+                  "version_added": false,
+                  "impl_url": "https://webkit.org/b/223166"
+                },
+                "safari_ios": "mirror",
+                "samsunginternet_android": "mirror",
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/PlainDateTime.json b/javascript/builtins/Temporal/PlainDateTime.json
index 119ab9b83e6e49..43fde538622feb 100644
--- a/javascript/builtins/Temporal/PlainDateTime.json
+++ b/javascript/builtins/Temporal/PlainDateTime.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "PlainDateTime": {
           "__compat": {
-            "description": "Temporal.PlainDateTime interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plaindatetime-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "PlainDateTime": {
             "__compat": {
-              "description": "Temporal.PlainDateTime constructor",
+              "description": "<code>PlainDateTime()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plaindatetime-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -157,10 +158,9 @@
               }
             }
           },
-          "calendar": {
+          "calendarId": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.calendar",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.calendarid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.compare",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "day": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.day",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.day",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "dayOfWeek": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.dayOfWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.dayofweek",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "dayOfYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.dayOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.dayofyear",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "daysInMonth": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.daysInMonth",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.daysinmonth",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "daysInWeek": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.daysInWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.daysinweek",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "daysInYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.daysInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.daysinyear",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +576,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +628,6 @@
           },
           "era": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.era",
               "tags": [
                 "web-features:temporal"
               ],
@@ -667,7 +667,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -678,7 +679,6 @@
           },
           "eraYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.eraYear",
               "tags": [
                 "web-features:temporal"
               ],
@@ -718,7 +718,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -729,7 +730,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.from",
               "tags": [
                 "web-features:temporal"
@@ -770,7 +770,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -781,7 +782,6 @@
           },
           "getISOFields": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.getISOFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
@@ -822,7 +822,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -833,7 +834,6 @@
           },
           "hour": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.hour",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.hour",
               "tags": [
                 "web-features:temporal"
@@ -874,7 +874,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -885,7 +886,6 @@
           },
           "inLeapYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.inLeapYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.inleapyear",
               "tags": [
                 "web-features:temporal"
@@ -926,7 +926,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -937,7 +938,6 @@
           },
           "microsecond": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.microsecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.microsecond",
               "tags": [
                 "web-features:temporal"
@@ -978,7 +978,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -989,7 +990,6 @@
           },
           "millisecond": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.millisecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.millisecond",
               "tags": [
                 "web-features:temporal"
@@ -1030,7 +1030,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +1042,6 @@
           },
           "minute": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.minute",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.minute",
               "tags": [
                 "web-features:temporal"
@@ -1082,7 +1082,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1093,7 +1094,6 @@
           },
           "month": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.month",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.month",
               "tags": [
                 "web-features:temporal"
@@ -1134,7 +1134,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1145,7 +1146,6 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.monthCode",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
@@ -1186,7 +1186,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1197,7 +1198,6 @@
           },
           "monthsInYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.monthsInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.monthsinyear",
               "tags": [
                 "web-features:temporal"
@@ -1238,7 +1238,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1249,7 +1250,6 @@
           },
           "nanosecond": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.nanosecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.nanosecond",
               "tags": [
                 "web-features:temporal"
@@ -1290,7 +1290,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1301,7 +1302,6 @@
           },
           "round": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.round()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.round",
               "tags": [
                 "web-features:temporal"
@@ -1342,7 +1342,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1353,7 +1354,6 @@
           },
           "second": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.second",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.second",
               "tags": [
                 "web-features:temporal"
@@ -1394,7 +1394,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1405,7 +1406,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -1446,7 +1446,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1457,7 +1458,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -1498,7 +1498,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1509,7 +1510,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -1550,7 +1550,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1561,7 +1562,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -1602,7 +1602,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1613,7 +1614,6 @@
           },
           "toPlainDate": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toPlainDate()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplaindate",
               "tags": [
                 "web-features:temporal"
@@ -1654,59 +1654,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toPlainMonthDay": {
-            "__compat": {
-              "description": "Temporal.PlainDateTime.toPlainMonthDay()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplainmonthday",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1717,7 +1666,6 @@
           },
           "toPlainTime": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toPlainTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplaintime",
               "tags": [
                 "web-features:temporal"
@@ -1758,59 +1706,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toPlainYearMonth": {
-            "__compat": {
-              "description": "Temporal.PlainDateTime.toPlainYearMonth()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.toplainyearmonth",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1821,7 +1718,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1862,7 +1758,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1873,7 +1770,6 @@
           },
           "toZonedDateTime": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.toZonedDateTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.tozoneddatetime",
               "tags": [
                 "web-features:temporal"
@@ -1914,7 +1810,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1925,7 +1822,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -1966,7 +1862,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1977,7 +1874,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -2018,7 +1914,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2029,7 +1926,6 @@
           },
           "weekOfYear": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.weekOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.weekofyear",
               "tags": [
                 "web-features:temporal"
@@ -2070,7 +1966,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2081,7 +1978,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -2122,7 +2018,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2133,7 +2030,6 @@
           },
           "withCalendar": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.withCalendar()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.withcalendar",
               "tags": [
                 "web-features:temporal"
@@ -2174,7 +2070,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2183,10 +2080,9 @@
               }
             }
           },
-          "withPlainDate": {
+          "withPlainTime": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.withPlainDate()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.withplaindate",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.withplaintime",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2226,7 +2122,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2235,10 +2132,9 @@
               }
             }
           },
-          "withPlainTime": {
+          "year": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.withPlainTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaindatetime.prototype.withplaintime",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.year",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2278,7 +2174,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2287,10 +2184,9 @@
               }
             }
           },
-          "year": {
+          "yearOfWeek": {
             "__compat": {
-              "description": "Temporal.PlainDateTime.year",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.year",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaindatetime.prototype.yearofweek",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2330,7 +2226,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/PlainMonthDay.json b/javascript/builtins/Temporal/PlainMonthDay.json
index 05e243d1f5abf6..663be3e0fa44b2 100644
--- a/javascript/builtins/Temporal/PlainMonthDay.json
+++ b/javascript/builtins/Temporal/PlainMonthDay.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "PlainMonthDay": {
           "__compat": {
-            "description": "Temporal.PlainMonthDay interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plainmonthday-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "PlainMonthDay": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay constructor",
+              "description": "<code>PlainMonthDay()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plainmonthday-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -105,10 +106,9 @@
               }
             }
           },
-          "calendar": {
+          "calendarId": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainmonthday.prototype.calendar",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainmonthday.prototype.calendarid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +160,6 @@
           },
           "day": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.day",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainmonthday.prototype.day",
               "tags": [
                 "web-features:temporal"
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.from",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "getISOFields": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.getISOFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.monthCode",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainmonthday.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "toPlainDate": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.toPlainDate()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.toplaindate",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +576,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +628,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -668,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -679,7 +680,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.PlainMonthDay.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainmonthday.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -720,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/PlainTime.json b/javascript/builtins/Temporal/PlainTime.json
index 5b19ceb88e3f07..8a9d6d73dc3ec6 100644
--- a/javascript/builtins/Temporal/PlainTime.json
+++ b/javascript/builtins/Temporal/PlainTime.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "PlainTime": {
           "__compat": {
-            "description": "Temporal.PlainTime interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plaintime-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "PlainTime": {
             "__compat": {
-              "description": "Temporal.PlainTime constructor",
+              "description": "<code>PlainTime()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-properties-of-the-temporal-plaintime-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.PlainTime.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,59 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "calendar": {
-            "__compat": {
-              "description": "Temporal.PlainTime.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.calendar",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": "preview",
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +160,7 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.PlainTime.compare()",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.compare",
               "tags": [
                 "web-features:temporal"
               ],
@@ -251,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -262,7 +212,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.PlainTime.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -303,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -314,7 +264,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.PlainTime.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.from",
               "tags": [
                 "web-features:temporal"
@@ -355,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -366,7 +316,6 @@
           },
           "getISOFields": {
             "__compat": {
-              "description": "Temporal.PlainTime.getISOFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
@@ -407,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -418,7 +368,6 @@
           },
           "hour": {
             "__compat": {
-              "description": "Temporal.PlainTime.hour",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.hour",
               "tags": [
                 "web-features:temporal"
@@ -459,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -470,7 +420,6 @@
           },
           "microsecond": {
             "__compat": {
-              "description": "Temporal.PlainTime.microsecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.microsecond",
               "tags": [
                 "web-features:temporal"
@@ -511,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -522,7 +472,6 @@
           },
           "millisecond": {
             "__compat": {
-              "description": "Temporal.PlainTime.millisecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.millisecond",
               "tags": [
                 "web-features:temporal"
@@ -563,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -574,7 +524,6 @@
           },
           "minute": {
             "__compat": {
-              "description": "Temporal.PlainTime.minute",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.minute",
               "tags": [
                 "web-features:temporal"
@@ -615,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -626,7 +576,6 @@
           },
           "nanosecond": {
             "__compat": {
-              "description": "Temporal.PlainTime.nanosecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.nanosecond",
               "tags": [
                 "web-features:temporal"
@@ -667,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -678,7 +628,6 @@
           },
           "round": {
             "__compat": {
-              "description": "Temporal.PlainTime.round()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.round",
               "tags": [
                 "web-features:temporal"
@@ -719,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -730,7 +680,6 @@
           },
           "second": {
             "__compat": {
-              "description": "Temporal.PlainTime.second",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plaintime.prototype.second",
               "tags": [
                 "web-features:temporal"
@@ -771,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -782,7 +732,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.PlainTime.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -823,7 +772,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -834,7 +784,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.PlainTime.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -875,7 +824,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -886,7 +836,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.PlainTime.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -927,7 +876,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -938,7 +888,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.PlainTime.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -979,59 +928,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toPlainDateTime": {
-            "__compat": {
-              "description": "Temporal.PlainTime.toPlainDateTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.toplaindatetime",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1042,7 +940,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.PlainTime.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1083,59 +980,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toZonedDateTime": {
-            "__compat": {
-              "description": "Temporal.PlainTime.toZonedDateTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.tozoneddatetime",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1146,7 +992,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.PlainTime.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -1187,7 +1032,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1198,7 +1044,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.PlainTime.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -1239,7 +1084,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1250,7 +1096,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.PlainTime.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -1291,7 +1136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/PlainYearMonth.json b/javascript/builtins/Temporal/PlainYearMonth.json
index 20e387b1d51118..22d93ee7add0eb 100644
--- a/javascript/builtins/Temporal/PlainYearMonth.json
+++ b/javascript/builtins/Temporal/PlainYearMonth.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "PlainYearMonth": {
           "__compat": {
-            "description": "Temporal.PlainYearMonth interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plainyearmonth-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "PlainYearMonth": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth constructor",
+              "description": "<code>PlainYearMonth()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-plainyearmonth-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -157,10 +158,9 @@
               }
             }
           },
-          "calendar": {
+          "calendarId": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.calendar",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.calendarid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.compare",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "daysInMonth": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.daysInMonth",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.daysinmonth",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "daysInYear": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.daysInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.daysinyear",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "equals": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.equals()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.equals",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,7 @@
           },
           "era": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.era",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.era",
               "tags": [
                 "web-features:temporal"
               ],
@@ -459,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -470,7 +472,7 @@
           },
           "eraYear": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.eraYear",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.erayear",
               "tags": [
                 "web-features:temporal"
               ],
@@ -510,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -521,7 +524,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.from",
               "tags": [
                 "web-features:temporal"
@@ -562,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -573,7 +576,6 @@
           },
           "getISOFields": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.getISOFields()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
@@ -614,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -625,7 +628,6 @@
           },
           "inLeapYear": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.inLeapYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.inleapyear",
               "tags": [
                 "web-features:temporal"
@@ -666,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -677,8 +680,7 @@
           },
           "month": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.month",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.monthCode",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.month",
               "tags": [
                 "web-features:temporal"
               ],
@@ -718,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -729,8 +732,7 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.monthCode",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.monthCode",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
               ],
@@ -770,7 +772,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -781,7 +784,6 @@
           },
           "monthsInYear": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.monthsInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.monthsinyear",
               "tags": [
                 "web-features:temporal"
@@ -822,7 +824,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -833,7 +836,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -874,7 +876,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -885,7 +888,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -926,7 +928,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -937,7 +940,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -978,7 +980,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -989,7 +992,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -1030,7 +1032,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +1044,6 @@
           },
           "toPlainDate": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.toPlainDate()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.toplaindate",
               "tags": [
                 "web-features:temporal"
@@ -1082,7 +1084,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1093,7 +1096,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -1134,7 +1136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1145,7 +1148,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -1186,7 +1188,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1197,7 +1200,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -1238,7 +1240,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1249,7 +1252,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -1290,7 +1292,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1301,7 +1304,6 @@
           },
           "year": {
             "__compat": {
-              "description": "Temporal.PlainYearMonth.year",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.plainyearmonth.prototype.year",
               "tags": [
                 "web-features:temporal"
@@ -1342,7 +1344,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/TimeZone.json b/javascript/builtins/Temporal/TimeZone.json
index 18f07f83324128..c9aeeaad58235b 100644
--- a/javascript/builtins/Temporal/TimeZone.json
+++ b/javascript/builtins/Temporal/TimeZone.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "TimeZone": {
           "__compat": {
-            "description": "Temporal.TimeZone interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-timezone-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,7 +55,7 @@
           },
           "TimeZone": {
             "__compat": {
-              "description": "Temporal.TimeZone constructor",
+              "description": "<code>TimeZone()</code> constructor",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-timezone-constructor",
               "tags": [
                 "web-features:temporal"
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "from": {
             "__compat": {
-              "description": "Temporal.TimeZone.from()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.from",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -159,7 +160,6 @@
           },
           "getInstantFor": {
             "__compat": {
-              "description": "Temporal.TimeZone.getInstantFor()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getinstantfor",
               "tags": [
                 "web-features:temporal"
@@ -200,59 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "getNextTransition": {
-            "__compat": {
-              "description": "Temporal.TimeZone.getNextTransition()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getnexttransition",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +212,6 @@
           },
           "getOffsetNanosecondsFor": {
             "__compat": {
-              "description": "Temporal.TimeZone.getOffsetNanosecondsFor()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getoffsetnanosecondsfor",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +264,6 @@
           },
           "getOffsetStringFor": {
             "__compat": {
-              "description": "Temporal.TimeZone.getOffsetStringFor()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getoffsetstringfor",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +316,6 @@
           },
           "getPlainDateTimeFor": {
             "__compat": {
-              "description": "Temporal.TimeZone.getPlainDateTimeFor()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getplaindatetimefor",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +368,6 @@
           },
           "getPossibleInstantsFor": {
             "__compat": {
-              "description": "Temporal.TimeZone.getPossibleInstantsFor()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getpossibleinstantsfor",
               "tags": [
                 "web-features:temporal"
@@ -460,59 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "getPreviousTransition": {
-            "__compat": {
-              "description": "Temporal.TimeZone.getPreviousTransition()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getprevioustransition",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +420,6 @@
           },
           "id": {
             "__compat": {
-              "description": "Temporal.TimeZone.id",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.timezone.prototype.id",
               "tags": [
                 "web-features:temporal"
@@ -564,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -575,7 +472,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.TimeZone.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -616,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,7 +524,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.TimeZone.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -668,7 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/Temporal/ZonedDateTime.json b/javascript/builtins/Temporal/ZonedDateTime.json
index 12166ce9f8ed53..fe39a027c5454f 100644
--- a/javascript/builtins/Temporal/ZonedDateTime.json
+++ b/javascript/builtins/Temporal/ZonedDateTime.json
@@ -4,7 +4,6 @@
       "Temporal": {
         "ZonedDateTime": {
           "__compat": {
-            "description": "Temporal.ZonedDateTime interface",
             "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-objects",
             "tags": [
               "web-features:temporal"
@@ -45,7 +44,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -55,8 +55,8 @@
           },
           "ZonedDateTime": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime constructor",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-objects",
+              "description": "<code>ZonedDateTime()</code> constructor",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-constructor",
               "tags": [
                 "web-features:temporal"
               ],
@@ -96,7 +96,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -107,7 +108,6 @@
           },
           "add": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.add()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.add",
               "tags": [
                 "web-features:temporal"
@@ -148,7 +148,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -157,10 +158,9 @@
               }
             }
           },
-          "calendar": {
+          "calendarId": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.calendar",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.calendar",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.calendarid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -200,7 +200,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -211,7 +212,6 @@
           },
           "compare": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.compare()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.compare",
               "tags": [
                 "web-features:temporal"
@@ -252,7 +252,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -263,7 +264,6 @@
           },
           "day": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.day",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.day",
               "tags": [
                 "web-features:temporal"
@@ -304,7 +304,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -315,7 +316,6 @@
           },
           "dayOfWeek": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.dayOfWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.dayofweek",
               "tags": [
                 "web-features:temporal"
@@ -356,7 +356,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -367,7 +368,6 @@
           },
           "dayOfYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.dayOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.dayofyear",
               "tags": [
                 "web-features:temporal"
@@ -408,7 +408,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -419,7 +420,6 @@
           },
           "daysInMonth": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.daysInMonth",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.daysinmonth",
               "tags": [
                 "web-features:temporal"
@@ -460,7 +460,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -471,7 +472,6 @@
           },
           "daysInWeek": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.daysInWeek",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.daysinweek",
               "tags": [
                 "web-features:temporal"
@@ -512,7 +512,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -523,7 +524,6 @@
           },
           "daysInYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.daysInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.daysinyear",
               "tags": [
                 "web-features:temporal"
@@ -564,59 +564,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "epochMicroseconds": {
-            "__compat": {
-              "description": "Temporal.ZonedDateTime.epochMicroseconds",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochmicroseconds",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -627,8 +576,7 @@
           },
           "epochMilliseconds": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.epochMilliseconds",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochseconds",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochmilliseconds",
               "tags": [
                 "web-features:temporal"
               ],
@@ -668,7 +616,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -679,7 +628,6 @@
           },
           "epochNanoseconds": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.epochNanoseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochnanoseconds",
               "tags": [
                 "web-features:temporal"
@@ -720,7 +668,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -729,10 +678,9 @@
               }
             }
           },
-          "epochSeconds": {
+          "equals": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.epochSeconds",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochseconds",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.equals",
               "tags": [
                 "web-features:temporal"
               ],
@@ -772,7 +720,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -781,10 +730,9 @@
               }
             }
           },
-          "equals": {
+          "era": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.equals()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.equals",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.era",
               "tags": [
                 "web-features:temporal"
               ],
@@ -824,7 +772,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -833,9 +782,9 @@
               }
             }
           },
-          "era": {
+          "eraYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.era",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.erayear",
               "tags": [
                 "web-features:temporal"
               ],
@@ -875,7 +824,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -884,9 +834,9 @@
               }
             }
           },
-          "eraYear": {
+          "from": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.eraYear",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.from",
               "tags": [
                 "web-features:temporal"
               ],
@@ -926,7 +876,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -935,10 +886,9 @@
               }
             }
           },
-          "from": {
+          "getISOFields": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.from()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.from",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.getisofields",
               "tags": [
                 "web-features:temporal"
               ],
@@ -978,7 +928,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -987,10 +938,9 @@
               }
             }
           },
-          "getISOFields": {
+          "getTimeZoneTransition": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.getISOFields()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.getisofields",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.gettimezonetransition",
               "tags": [
                 "web-features:temporal"
               ],
@@ -1030,7 +980,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1041,7 +992,6 @@
           },
           "hour": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.hour",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.hour",
               "tags": [
                 "web-features:temporal"
@@ -1082,7 +1032,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1093,7 +1044,6 @@
           },
           "hoursInDay": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.hoursInDay",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.hoursinday",
               "tags": [
                 "web-features:temporal"
@@ -1134,7 +1084,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1145,7 +1096,6 @@
           },
           "inLeapYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.inLeapYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.inleapyear",
               "tags": [
                 "web-features:temporal"
@@ -1186,7 +1136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1197,7 +1148,6 @@
           },
           "microsecond": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.microsecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.microsecond",
               "tags": [
                 "web-features:temporal"
@@ -1238,7 +1188,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1249,7 +1200,6 @@
           },
           "millisecond": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.millisecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.millisecond",
               "tags": [
                 "web-features:temporal"
@@ -1290,7 +1240,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1301,7 +1252,6 @@
           },
           "minute": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.minute",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.minute",
               "tags": [
                 "web-features:temporal"
@@ -1342,7 +1292,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1353,7 +1304,6 @@
           },
           "month": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.month",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.month",
               "tags": [
                 "web-features:temporal"
@@ -1394,7 +1344,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1405,7 +1356,6 @@
           },
           "monthCode": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.monthCode",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.monthcode",
               "tags": [
                 "web-features:temporal"
@@ -1446,7 +1396,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1457,7 +1408,6 @@
           },
           "monthsInYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.monthsInYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.monthsinyear",
               "tags": [
                 "web-features:temporal"
@@ -1498,7 +1448,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1509,7 +1460,6 @@
           },
           "nanosecond": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.nanosecond",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.nanosecond",
               "tags": [
                 "web-features:temporal"
@@ -1550,7 +1500,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1561,7 +1512,6 @@
           },
           "offset": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.offset",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.offset",
               "tags": [
                 "web-features:temporal"
@@ -1602,7 +1552,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1613,7 +1564,6 @@
           },
           "offsetNanoseconds": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.offsetNanoseconds",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.offsetnanoseconds",
               "tags": [
                 "web-features:temporal"
@@ -1654,7 +1604,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1665,7 +1616,6 @@
           },
           "round": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.round()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.round",
               "tags": [
                 "web-features:temporal"
@@ -1706,7 +1656,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1717,7 +1668,6 @@
           },
           "second": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.second",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.second",
               "tags": [
                 "web-features:temporal"
@@ -1758,7 +1708,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1769,7 +1720,6 @@
           },
           "since": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.since()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.since",
               "tags": [
                 "web-features:temporal"
@@ -1810,7 +1760,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1821,7 +1772,7 @@
           },
           "startOfDay": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.startOfDay",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.startofday",
               "tags": [
                 "web-features:temporal"
               ],
@@ -1861,7 +1812,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1872,7 +1824,6 @@
           },
           "subtract": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.subtract()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.subtract",
               "tags": [
                 "web-features:temporal"
@@ -1913,7 +1864,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1922,10 +1874,9 @@
               }
             }
           },
-          "timeZone": {
+          "timeZoneId": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.timeZone",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.timezone",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.timezoneid",
               "tags": [
                 "web-features:temporal"
               ],
@@ -1965,7 +1916,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1976,7 +1928,6 @@
           },
           "toInstant": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toInstant()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toinstant",
               "tags": [
                 "web-features:temporal"
@@ -2017,7 +1968,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2028,7 +1980,6 @@
           },
           "toJSON": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toJSON()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tojson",
               "tags": [
                 "web-features:temporal"
@@ -2069,7 +2020,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2080,7 +2032,6 @@
           },
           "toLocaleString": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toLocaleString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tolocalestring",
               "tags": [
                 "web-features:temporal"
@@ -2121,7 +2072,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2132,7 +2084,6 @@
           },
           "toPlainDate": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toPlainDate()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaindate",
               "tags": [
                 "web-features:temporal"
@@ -2173,7 +2124,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2184,7 +2136,6 @@
           },
           "toPlainDateTime": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toPlainDateTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaindatetime",
               "tags": [
                 "web-features:temporal"
@@ -2225,59 +2176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toPlainMonthDay": {
-            "__compat": {
-              "description": "Temporal.ZonedDateTime.toPlainMonthDay()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplainmonthday",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2288,7 +2188,6 @@
           },
           "toPlainTime": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toPlainTime()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplaintime",
               "tags": [
                 "web-features:temporal"
@@ -2329,59 +2228,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
-              },
-              "status": {
-                "experimental": true,
-                "standard_track": true,
-                "deprecated": false
-              }
-            }
-          },
-          "toPlainYearMonth": {
-            "__compat": {
-              "description": "Temporal.ZonedDateTime.toPlainYearMonth()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.toplainyearmonth",
-              "tags": [
-                "web-features:temporal"
-              ],
-              "support": {
-                "chrome": {
-                  "version_added": false,
-                  "impl_url": "https://crbug.com/v8/11544"
-                },
-                "chrome_android": "mirror",
-                "deno": {
-                  "version_added": "1.40",
-                  "flags": [
-                    {
-                      "type": "runtime_flag",
-                      "name": "--unstable-temporal"
-                    }
-                  ]
-                },
-                "edge": "mirror",
-                "firefox": {
-                  "version_added": false,
-                  "impl_url": "https://bugzil.la/1519167"
-                },
-                "firefox_android": "mirror",
-                "ie": {
-                  "version_added": false
-                },
-                "nodejs": {
-                  "version_added": false
-                },
-                "oculus": "mirror",
-                "opera": "mirror",
-                "opera_android": "mirror",
-                "safari": {
-                  "version_added": false,
-                  "impl_url": "https://webkit.org/b/223166"
-                },
-                "safari_ios": "mirror",
-                "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2392,7 +2240,6 @@
           },
           "toString": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.toString()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tostring",
               "tags": [
                 "web-features:temporal"
@@ -2433,7 +2280,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2444,7 +2292,6 @@
           },
           "until": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.until()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.until",
               "tags": [
                 "web-features:temporal"
@@ -2485,7 +2332,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2496,7 +2344,6 @@
           },
           "valueOf": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.valueOf()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.valueof",
               "tags": [
                 "web-features:temporal"
@@ -2537,7 +2384,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2548,7 +2396,6 @@
           },
           "weekOfYear": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.weekOfYear",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.weekofyear",
               "tags": [
                 "web-features:temporal"
@@ -2589,7 +2436,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2600,7 +2448,6 @@
           },
           "with": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.with()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.with",
               "tags": [
                 "web-features:temporal"
@@ -2641,7 +2488,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2652,7 +2500,6 @@
           },
           "withCalendar": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.withCalendar()",
               "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withcalendar",
               "tags": [
                 "web-features:temporal"
@@ -2693,7 +2540,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2702,10 +2550,9 @@
               }
             }
           },
-          "withPlainDate": {
+          "withPlainTime": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.withPlainDate()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withplaindate",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withplaintime",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2745,7 +2592,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2754,10 +2602,9 @@
               }
             }
           },
-          "withPlainTime": {
+          "withTimeZone": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.withPlainTime()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withplaintime",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withtimezone",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2797,7 +2644,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2806,10 +2654,9 @@
               }
             }
           },
-          "withTimeZone": {
+          "year": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.withTimeZone()",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.withtimezone",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.year",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2849,7 +2696,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -2858,10 +2706,9 @@
               }
             }
           },
-          "year": {
+          "yearOfWeek": {
             "__compat": {
-              "description": "Temporal.ZonedDateTime.year",
-              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.year",
+              "spec_url": "https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.yearofweek",
               "tags": [
                 "web-features:temporal"
               ],
@@ -2901,7 +2748,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
diff --git a/javascript/builtins/TypeError.json b/javascript/builtins/TypeError.json
index 1941bc494a829d..2f2a3570f48051 100644
--- a/javascript/builtins/TypeError.json
+++ b/javascript/builtins/TypeError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/TypedArray.json b/javascript/builtins/TypedArray.json
index 24a3ed028cecba..0acdcd860a50cb 100644
--- a/javascript/builtins/TypedArray.json
+++ b/javascript/builtins/TypedArray.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -99,7 +100,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,7 +145,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +200,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -251,7 +255,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -305,7 +310,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -356,7 +362,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -402,7 +409,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -448,7 +456,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -494,7 +503,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -540,7 +550,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -586,7 +597,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -632,7 +644,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -678,7 +691,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -722,7 +736,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -766,7 +781,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -812,7 +828,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -858,7 +875,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -904,7 +922,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -963,7 +982,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "notes": "Negative integers are not considered as indexed properties and therefore return the value of the prototype property."
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1010,7 +1030,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1054,7 +1075,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1100,7 +1122,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1146,7 +1169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1193,7 +1217,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1247,7 +1272,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1293,7 +1319,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1347,7 +1374,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1398,7 +1426,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1444,7 +1473,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1490,7 +1520,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1536,7 +1567,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1582,7 +1614,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1636,7 +1669,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1682,7 +1716,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1728,7 +1763,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1774,7 +1810,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1828,7 +1865,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1842,8 +1880,7 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/toLocaleString",
             "spec_url": "https://tc39.es/ecma262/multipage/indexed-collections.html#sec-%typedarray%.prototype.tolocalestring",
             "tags": [
-              "web-features:typed-arrays",
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:intl"
             ],
             "support": {
               "chrome": {
@@ -1880,7 +1917,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1924,7 +1962,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1968,7 +2007,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2020,7 +2060,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "≤37"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2066,7 +2107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2110,7 +2152,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2171,7 +2214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2217,7 +2261,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/URIError.json b/javascript/builtins/URIError.json
index aa56a2ca46185c..4436924fd38bcb 100644
--- a/javascript/builtins/URIError.json
+++ b/javascript/builtins/URIError.json
@@ -41,7 +41,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -90,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -136,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/Uint16Array.json b/javascript/builtins/Uint16Array.json
index a8d151ead6bd5c..3659a6a86f90fc 100644
--- a/javascript/builtins/Uint16Array.json
+++ b/javascript/builtins/Uint16Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Uint32Array.json b/javascript/builtins/Uint32Array.json
index 066247439bc7b7..213b8d0004efdc 100644
--- a/javascript/builtins/Uint32Array.json
+++ b/javascript/builtins/Uint32Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Uint8Array.json b/javascript/builtins/Uint8Array.json
index 69d27f62f57826..a58570b974eea2 100644
--- a/javascript/builtins/Uint8Array.json
+++ b/javascript/builtins/Uint8Array.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +152,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -195,7 +198,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/Uint8ClampedArray.json b/javascript/builtins/Uint8ClampedArray.json
index d9436d9b2e0439..22ce9408343fe9 100644
--- a/javascript/builtins/Uint8ClampedArray.json
+++ b/javascript/builtins/Uint8ClampedArray.json
@@ -46,7 +46,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +101,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,7 +151,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": "≤37"
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -194,7 +197,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/javascript/builtins/WeakMap.json b/javascript/builtins/WeakMap.json
index 9a97684ad5c9fb..04e5f19b28b848 100644
--- a/javascript/builtins/WeakMap.json
+++ b/javascript/builtins/WeakMap.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap",
           "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:weakmap"
           ],
           "support": {
             "chrome": {
@@ -37,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -51,7 +53,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/WeakMap",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -82,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +98,8 @@
             "__compat": {
               "description": "<code>new WeakMap(iterable)</code>",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:weakmap"
               ],
               "support": {
                 "chrome": {
@@ -125,7 +130,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -138,7 +144,8 @@
             "__compat": {
               "description": "<code>new WeakMap(null)</code>",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:weakmap"
               ],
               "support": {
                 "chrome": {
@@ -169,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -184,7 +192,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/delete",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap.prototype.delete",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -216,7 +225,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +240,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/get",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap.prototype.get",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -262,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -276,7 +288,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/has",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap.prototype.has",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -308,7 +321,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -322,7 +336,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/set",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakmap.prototype.set",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -356,7 +371,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -369,7 +385,8 @@
           "__compat": {
             "description": "Non-registered symbols as keys",
             "tags": [
-              "web-features:snapshot:ecmascript-2023"
+              "web-features:snapshot:ecmascript-2023",
+              "web-features:weakmap"
             ],
             "support": {
               "chrome": {
@@ -399,7 +416,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/WeakRef.json b/javascript/builtins/WeakRef.json
index 6688fadbcf89a2..4ed00c43f67a5a 100644
--- a/javascript/builtins/WeakRef.json
+++ b/javascript/builtins/WeakRef.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef",
           "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2021"
+            "web-features:snapshot:ecmascript-2021",
+            "web-features:weak-references"
           ],
           "support": {
             "chrome": {
@@ -35,7 +36,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -49,7 +51,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/WeakRef",
             "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:weak-references"
             ],
             "support": {
               "chrome": {
@@ -78,7 +81,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -92,7 +96,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/deref",
             "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref.prototype.deref",
             "tags": [
-              "web-features:snapshot:ecmascript-2021"
+              "web-features:snapshot:ecmascript-2021",
+              "web-features:weak-references"
             ],
             "support": {
               "chrome": {
@@ -121,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/WeakSet.json b/javascript/builtins/WeakSet.json
index 97a9eea18a203d..45ec584bbae803 100644
--- a/javascript/builtins/WeakSet.json
+++ b/javascript/builtins/WeakSet.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet",
           "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset-objects",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:weakset"
           ],
           "support": {
             "chrome": {
@@ -37,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -51,7 +53,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/WeakSet",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset-constructor",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakset"
             ],
             "support": {
               "chrome": {
@@ -82,7 +85,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -94,7 +98,8 @@
             "__compat": {
               "description": "<code>new WeakSet(iterable)</code>",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:weakset"
               ],
               "support": {
                 "chrome": {
@@ -125,7 +130,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -138,7 +144,8 @@
             "__compat": {
               "description": "<code>new WeakSet(null)</code>",
               "tags": [
-                "web-features:snapshot:ecmascript-2015"
+                "web-features:snapshot:ecmascript-2015",
+                "web-features:weakset"
               ],
               "support": {
                 "chrome": {
@@ -169,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -184,7 +192,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/add",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset.prototype.add",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakset"
             ],
             "support": {
               "chrome": {
@@ -215,7 +224,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +239,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/delete",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset.prototype.delete",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakset"
             ],
             "support": {
               "chrome": {
@@ -260,7 +271,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -274,7 +286,8 @@
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/has",
             "spec_url": "https://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset.prototype.has",
             "tags": [
-              "web-features:snapshot:ecmascript-2015"
+              "web-features:snapshot:ecmascript-2015",
+              "web-features:weakset"
             ],
             "support": {
               "chrome": {
@@ -305,7 +318,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -318,7 +332,8 @@
           "__compat": {
             "description": "Non-registered symbols as keys",
             "tags": [
-              "web-features:snapshot:ecmascript-2023"
+              "web-features:snapshot:ecmascript-2023",
+              "web-features:weakset"
             ],
             "support": {
               "chrome": {
@@ -348,7 +363,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/javascript/builtins/globals.json b/javascript/builtins/globals.json
index bcca804c938977..6e68078c3b30f7 100644
--- a/javascript/builtins/globals.json
+++ b/javascript/builtins/globals.json
@@ -6,7 +6,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Infinity",
           "spec_url": "https://tc39.es/ecma262/multipage/global-object.html#sec-value-properties-of-the-global-object-infinity",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -41,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -55,7 +57,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/NaN",
           "spec_url": "https://tc39.es/ecma262/multipage/global-object.html#sec-value-properties-of-the-global-object-nan",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -90,7 +93,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -139,7 +143,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -188,7 +193,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -237,7 +243,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -335,7 +343,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -384,7 +393,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -427,7 +437,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -476,7 +487,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -490,7 +502,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/isNaN",
           "spec_url": "https://tc39.es/ecma262/multipage/global-object.html#sec-isnan-number",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -525,7 +538,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,7 +588,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -588,7 +603,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/parseInt",
           "spec_url": "https://tc39.es/ecma262/multipage/global-object.html#sec-parseint-string-radix",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -623,7 +639,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -663,7 +680,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -713,7 +731,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -762,7 +781,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/javascript/classes.json b/javascript/classes.json
index bcb44b4a3224b4..4b3a4c527aecaa 100644
--- a/javascript/classes.json
+++ b/javascript/classes.json
@@ -44,7 +44,8 @@
           },
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           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
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@@ -96,7 +97,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -149,7 +151,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -190,7 +193,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -231,7 +235,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -272,7 +277,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -327,7 +333,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -380,7 +387,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -421,7 +429,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -462,7 +471,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/functions.json b/javascript/functions.json
index 3681253a203111..68b3f74e02abec 100644
--- a/javascript/functions.json
+++ b/javascript/functions.json
@@ -40,7 +40,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
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@@ -88,7 +89,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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           "status": {
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@@ -136,7 +138,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -185,7 +188,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -234,7 +238,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -285,7 +290,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -328,7 +334,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -373,7 +380,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -419,7 +427,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -462,7 +471,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -506,7 +516,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -556,7 +567,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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           "status": {
             "experimental": false,
@@ -601,7 +613,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -648,7 +661,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -686,7 +700,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -727,7 +742,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -768,7 +784,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -815,7 +832,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -856,7 +874,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -906,7 +925,8 @@
               "version_added": "1"
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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@@ -951,7 +971,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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diff --git a/javascript/grammar.json b/javascript/grammar.json
index f5ede2b34afb3d..879de38c451472 100644
--- a/javascript/grammar.json
+++ b/javascript/grammar.json
@@ -43,7 +43,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Binary",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-BinaryIntegerLiteral",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -89,7 +91,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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           "status": {
             "experimental": false,
@@ -139,7 +142,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -154,7 +158,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Decimal",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-DecimalLiteral",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -189,7 +194,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -233,7 +239,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -280,7 +287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -295,7 +303,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Hexadecimal",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-HexIntegerLiteral",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -330,7 +339,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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           "status": {
             "experimental": false,
@@ -380,7 +390,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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           "status": {
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@@ -423,7 +434,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -438,7 +450,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Octal",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#prod-OctalIntegerLiteral",
           "tags": [
-            "web-features:snapshot:ecmascript-2015"
+            "web-features:snapshot:ecmascript-2015",
+            "web-features:number"
           ],
           "support": {
             "chrome": {
@@ -469,7 +482,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -484,7 +498,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#Regular_expression_literals",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-literals-regular-expression-literals",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -519,7 +534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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@@ -534,7 +550,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Lexical_grammar#String_literals",
           "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-literals-string-literals",
           "tags": [
-            "web-features:snapshot:ecmascript-1"
+            "web-features:snapshot:ecmascript-1",
+            "web-features:strings"
           ],
           "support": {
             "chrome": {
@@ -569,7 +586,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -619,7 +637,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -665,7 +684,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -709,7 +729,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -755,7 +776,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -796,7 +818,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -855,7 +878,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -910,7 +934,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -951,7 +976,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -998,7 +1024,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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diff --git a/javascript/operators/addition.json b/javascript/operators/addition.json
index c3cd87aeeca2f5..0b178ba94c6bbb 100644
--- a/javascript/operators/addition.json
+++ b/javascript/operators/addition.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
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diff --git a/javascript/operators/addition_assignment.json b/javascript/operators/addition_assignment.json
index 5ed6feb685b42c..ae77a292683779 100644
--- a/javascript/operators/addition_assignment.json
+++ b/javascript/operators/addition_assignment.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/assignment.json b/javascript/operators/assignment.json
index f338ee31b189e8..6899e51530d521 100644
--- a/javascript/operators/assignment.json
+++ b/javascript/operators/assignment.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/async_function.json b/javascript/operators/async_function.json
index ca37c22c3ad2fe..9e900f6715d7f0 100644
--- a/javascript/operators/async_function.json
+++ b/javascript/operators/async_function.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/async_generator_function.json b/javascript/operators/async_generator_function.json
index eecb404c7fcc7b..7210a957a113dd 100644
--- a/javascript/operators/async_generator_function.json
+++ b/javascript/operators/async_generator_function.json
@@ -33,7 +33,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/await.json b/javascript/operators/await.json
index 0bc1769a9bc581..b67bd105027ddf 100644
--- a/javascript/operators/await.json
+++ b/javascript/operators/await.json
@@ -37,7 +37,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -78,7 +79,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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diff --git a/javascript/operators/bitwise_and.json b/javascript/operators/bitwise_and.json
index cd4ae40f46afb8..907e9ab2484b8f 100644
--- a/javascript/operators/bitwise_and.json
+++ b/javascript/operators/bitwise_and.json
@@ -42,7 +42,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/bitwise_and_assignment.json b/javascript/operators/bitwise_and_assignment.json
index 57584e9f27ff9e..68f48b4d422b01 100644
--- a/javascript/operators/bitwise_and_assignment.json
+++ b/javascript/operators/bitwise_and_assignment.json
@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/bitwise_not.json b/javascript/operators/bitwise_not.json
index f60155517b42e4..0ae9a255bffb97 100644
--- a/javascript/operators/bitwise_not.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/bitwise_or.json b/javascript/operators/bitwise_or.json
index 02c35c2b6f5a64..793f05d666453b 100644
--- a/javascript/operators/bitwise_or.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/bitwise_or_assignment.json b/javascript/operators/bitwise_or_assignment.json
index 6dbc0cf8108c07..224497b679af18 100644
--- a/javascript/operators/bitwise_or_assignment.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/bitwise_xor.json b/javascript/operators/bitwise_xor.json
index f7a58f61cd8acd..a69efeb6c7f7e5 100644
--- a/javascript/operators/bitwise_xor.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/bitwise_xor_assignment.json b/javascript/operators/bitwise_xor_assignment.json
index d8e062e3c5c04d..e155703824c493 100644
--- a/javascript/operators/bitwise_xor_assignment.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/class.json b/javascript/operators/class.json
index aac3e29ca35762..e5c4358104dcfd 100644
--- a/javascript/operators/class.json
+++ b/javascript/operators/class.json
@@ -37,7 +37,8 @@
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diff --git a/javascript/operators/comma.json b/javascript/operators/comma.json
index 84976a93493366..eb40678c322ee7 100644
--- a/javascript/operators/comma.json
+++ b/javascript/operators/comma.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/conditional.json b/javascript/operators/conditional.json
index f034149dc160ba..3e787f78fcbc97 100644
--- a/javascript/operators/conditional.json
+++ b/javascript/operators/conditional.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/decrement.json b/javascript/operators/decrement.json
index b985fda05d126b..f62a3535970dcc 100644
--- a/javascript/operators/decrement.json
+++ b/javascript/operators/decrement.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/delete.json b/javascript/operators/delete.json
index 30e95209c832d2..ea64015af088d4 100644
--- a/javascript/operators/delete.json
+++ b/javascript/operators/delete.json
@@ -41,7 +41,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/destructuring.json b/javascript/operators/destructuring.json
index e09da66ea39ec6..e43e987b389f6e 100644
--- a/javascript/operators/destructuring.json
+++ b/javascript/operators/destructuring.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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@@ -85,7 +86,8 @@
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               "samsunginternet_android": "mirror",
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@@ -129,7 +131,8 @@
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               "samsunginternet_android": "mirror",
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@@ -171,7 +174,8 @@
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               "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/division.json b/javascript/operators/division.json
index 9f3e74577c4a43..e50d9dd72f8776 100644
--- a/javascript/operators/division.json
+++ b/javascript/operators/division.json
@@ -42,7 +42,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/division_assignment.json b/javascript/operators/division_assignment.json
index 5f8a366aefbee9..60279be3146379 100644
--- a/javascript/operators/division_assignment.json
+++ b/javascript/operators/division_assignment.json
@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/equality.json b/javascript/operators/equality.json
index bf75f2d893fb5f..049432f25e0572 100644
--- a/javascript/operators/equality.json
+++ b/javascript/operators/equality.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/exponentiation.json b/javascript/operators/exponentiation.json
index c7b0806144d081..b11baf2d943a84 100644
--- a/javascript/operators/exponentiation.json
+++ b/javascript/operators/exponentiation.json
@@ -40,7 +40,8 @@
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diff --git a/javascript/operators/exponentiation_assignment.json b/javascript/operators/exponentiation_assignment.json
index a77b38643afcbf..dbaff1c5850d54 100644
--- a/javascript/operators/exponentiation_assignment.json
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@@ -40,7 +40,8 @@
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diff --git a/javascript/operators/function.json b/javascript/operators/function.json
index 9b7469b984568c..3d52cc4a8f5bef 100644
--- a/javascript/operators/function.json
+++ b/javascript/operators/function.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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@@ -82,7 +83,8 @@
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               "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/generator_function.json b/javascript/operators/generator_function.json
index 3c384f69a0b321..5f96635e0df4cc 100644
--- a/javascript/operators/generator_function.json
+++ b/javascript/operators/generator_function.json
@@ -38,7 +38,8 @@
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@@ -76,7 +77,8 @@
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               "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/greater_than.json b/javascript/operators/greater_than.json
index 9b90cd960bc159..ee79fb430b949b 100644
--- a/javascript/operators/greater_than.json
+++ b/javascript/operators/greater_than.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/greater_than_or_equal.json b/javascript/operators/greater_than_or_equal.json
index 8eef1e46c568c9..3c8af1f987beb2 100644
--- a/javascript/operators/greater_than_or_equal.json
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@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/grouping.json b/javascript/operators/grouping.json
index 62626adfc40944..5cb7363e826669 100644
--- a/javascript/operators/grouping.json
+++ b/javascript/operators/grouping.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/import.json b/javascript/operators/import.json
index 936eb66de26a22..bc844e87180e7c 100644
--- a/javascript/operators/import.json
+++ b/javascript/operators/import.json
@@ -41,7 +41,8 @@
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             "samsunginternet_android": "mirror",
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@@ -82,7 +83,8 @@
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               "samsunginternet_android": "mirror",
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@@ -138,7 +140,8 @@
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diff --git a/javascript/operators/import_meta.json b/javascript/operators/import_meta.json
index 93200c0625c321..ca59b3717d56de 100644
--- a/javascript/operators/import_meta.json
+++ b/javascript/operators/import_meta.json
@@ -38,7 +38,8 @@
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@@ -79,7 +80,8 @@
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               "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/in.json b/javascript/operators/in.json
index bc87a9d22c05ca..c9818bc1bad8aa 100644
--- a/javascript/operators/in.json
+++ b/javascript/operators/in.json
@@ -41,7 +41,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/increment.json b/javascript/operators/increment.json
index 69c3bc50ac9c32..b07c99494e89a9 100644
--- a/javascript/operators/increment.json
+++ b/javascript/operators/increment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/inequality.json b/javascript/operators/inequality.json
index 9684baaf518f4d..392f36990d3182 100644
--- a/javascript/operators/inequality.json
+++ b/javascript/operators/inequality.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/instanceof.json b/javascript/operators/instanceof.json
index 46231c0cec391a..61c3ea45155093 100644
--- a/javascript/operators/instanceof.json
+++ b/javascript/operators/instanceof.json
@@ -38,7 +38,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/left_shift.json b/javascript/operators/left_shift.json
index 1007f7e2a7e4f5..10ace7365296b5 100644
--- a/javascript/operators/left_shift.json
+++ b/javascript/operators/left_shift.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/left_shift_assignment.json b/javascript/operators/left_shift_assignment.json
index 527331893f0a96..f3f4f4f69a64a1 100644
--- a/javascript/operators/left_shift_assignment.json
+++ b/javascript/operators/left_shift_assignment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/less_than.json b/javascript/operators/less_than.json
index 428c114e2e62ca..224f68f5ca3e99 100644
--- a/javascript/operators/less_than.json
+++ b/javascript/operators/less_than.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/less_than_or_equal.json b/javascript/operators/less_than_or_equal.json
index 004fec4967ce35..8b6c77965fec22 100644
--- a/javascript/operators/less_than_or_equal.json
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@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/logical_and.json b/javascript/operators/logical_and.json
index 445b6f4623f188..cc976060a52a77 100644
--- a/javascript/operators/logical_and.json
+++ b/javascript/operators/logical_and.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/logical_and_assignment.json b/javascript/operators/logical_and_assignment.json
index 5f6b5f61cd224a..6e04b430abf8cf 100644
--- a/javascript/operators/logical_and_assignment.json
+++ b/javascript/operators/logical_and_assignment.json
@@ -33,7 +33,8 @@
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diff --git a/javascript/operators/logical_not.json b/javascript/operators/logical_not.json
index 8ff4c0633ed15a..fdeb92ba9b5d7b 100644
--- a/javascript/operators/logical_not.json
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@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/logical_or.json b/javascript/operators/logical_or.json
index 789784497b49eb..5c31dc5cab80d8 100644
--- a/javascript/operators/logical_or.json
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@@ -42,7 +42,8 @@
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diff --git a/javascript/operators/logical_or_assignment.json b/javascript/operators/logical_or_assignment.json
index 4bd64bb6b88261..fd5e249eed66ef 100644
--- a/javascript/operators/logical_or_assignment.json
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@@ -33,7 +33,8 @@
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diff --git a/javascript/operators/multiplication.json b/javascript/operators/multiplication.json
index 47ba285aacfcba..0dcd18de0a4e9b 100644
--- a/javascript/operators/multiplication.json
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@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/multiplication_assignment.json b/javascript/operators/multiplication_assignment.json
index 401c65ebb302d3..acfdd457dfdbd1 100644
--- a/javascript/operators/multiplication_assignment.json
+++ b/javascript/operators/multiplication_assignment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/new.json b/javascript/operators/new.json
index 7c0685fc380bb4..c356a65313eb6d 100644
--- a/javascript/operators/new.json
+++ b/javascript/operators/new.json
@@ -41,7 +41,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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diff --git a/javascript/operators/new_target.json b/javascript/operators/new_target.json
index 0868f64110498f..d9842ed3e9f669 100644
--- a/javascript/operators/new_target.json
+++ b/javascript/operators/new_target.json
@@ -38,7 +38,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/null.json b/javascript/operators/null.json
index 715cf24698d3e3..3fc2aa9306a966 100644
--- a/javascript/operators/null.json
+++ b/javascript/operators/null.json
@@ -41,7 +41,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/nullish_coalescing.json b/javascript/operators/nullish_coalescing.json
index f0acd2e71e7ce1..747079948c3b54 100644
--- a/javascript/operators/nullish_coalescing.json
+++ b/javascript/operators/nullish_coalescing.json
@@ -36,7 +36,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/nullish_coalescing_assignment.json b/javascript/operators/nullish_coalescing_assignment.json
index 2df1a5a58a54b7..632db3ab63196b 100644
--- a/javascript/operators/nullish_coalescing_assignment.json
+++ b/javascript/operators/nullish_coalescing_assignment.json
@@ -36,7 +36,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/object_initializer.json b/javascript/operators/object_initializer.json
index 47ac0670082585..4d06bed7f42899 100644
--- a/javascript/operators/object_initializer.json
+++ b/javascript/operators/object_initializer.json
@@ -39,7 +39,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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@@ -82,7 +83,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -126,7 +128,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -170,7 +173,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -209,7 +213,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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diff --git a/javascript/operators/optional_chaining.json b/javascript/operators/optional_chaining.json
index 8d356e85783607..8cc7e98ce75ef7 100644
--- a/javascript/operators/optional_chaining.json
+++ b/javascript/operators/optional_chaining.json
@@ -36,7 +36,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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diff --git a/javascript/operators/property_accessors.json b/javascript/operators/property_accessors.json
index d0caa26aaff5b7..adee9417e80eb7 100644
--- a/javascript/operators/property_accessors.json
+++ b/javascript/operators/property_accessors.json
@@ -42,7 +42,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/remainder.json b/javascript/operators/remainder.json
index 6510587453bc99..427389ee0434a6 100644
--- a/javascript/operators/remainder.json
+++ b/javascript/operators/remainder.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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+            "webview_ios": "mirror"
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diff --git a/javascript/operators/remainder_assignment.json b/javascript/operators/remainder_assignment.json
index 44b6fbf4fd23aa..065349e27fcb0c 100644
--- a/javascript/operators/remainder_assignment.json
+++ b/javascript/operators/remainder_assignment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/right_shift.json b/javascript/operators/right_shift.json
index f30ddceb3382ec..122eb6467afba5 100644
--- a/javascript/operators/right_shift.json
+++ b/javascript/operators/right_shift.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/operators/right_shift_assignment.json b/javascript/operators/right_shift_assignment.json
index 5d5094a46cd426..68e298bf062e2d 100644
--- a/javascript/operators/right_shift_assignment.json
+++ b/javascript/operators/right_shift_assignment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/spread.json b/javascript/operators/spread.json
index ff45753afb7e95..34a0f376dfddd9 100644
--- a/javascript/operators/spread.json
+++ b/javascript/operators/spread.json
@@ -46,7 +46,8 @@
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             "samsunginternet_android": "mirror",
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@@ -95,7 +96,8 @@
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               "samsunginternet_android": "mirror",
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@@ -145,7 +147,8 @@
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               "samsunginternet_android": "mirror",
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@@ -188,7 +191,8 @@
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               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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diff --git a/javascript/operators/strict_equality.json b/javascript/operators/strict_equality.json
index 810b8eaf144770..d7d854bde9c1e4 100644
--- a/javascript/operators/strict_equality.json
+++ b/javascript/operators/strict_equality.json
@@ -39,7 +39,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/strict_inequality.json b/javascript/operators/strict_inequality.json
index 95c868c5827dcc..1516e501c2a070 100644
--- a/javascript/operators/strict_inequality.json
+++ b/javascript/operators/strict_inequality.json
@@ -39,7 +39,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/subtraction.json b/javascript/operators/subtraction.json
index dac2ecccd5e9f7..257875d846c4c5 100644
--- a/javascript/operators/subtraction.json
+++ b/javascript/operators/subtraction.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/subtraction_assignment.json b/javascript/operators/subtraction_assignment.json
index dabac2e3c3892a..65e837450616a4 100644
--- a/javascript/operators/subtraction_assignment.json
+++ b/javascript/operators/subtraction_assignment.json
@@ -42,7 +42,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/super.json b/javascript/operators/super.json
index 39d97df5dcba0c..f86c03b0cb5379 100644
--- a/javascript/operators/super.json
+++ b/javascript/operators/super.json
@@ -38,7 +38,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/this.json b/javascript/operators/this.json
index 7c60a547ee2420..5bf0797a89d321 100644
--- a/javascript/operators/this.json
+++ b/javascript/operators/this.json
@@ -41,7 +41,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/typeof.json b/javascript/operators/typeof.json
index 3eef1e47c2bf73..d732ea5f147087 100644
--- a/javascript/operators/typeof.json
+++ b/javascript/operators/typeof.json
@@ -41,7 +41,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/unary_negation.json b/javascript/operators/unary_negation.json
index 9d4a8cb496811e..c8759458b91610 100644
--- a/javascript/operators/unary_negation.json
+++ b/javascript/operators/unary_negation.json
@@ -42,7 +42,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/unary_plus.json b/javascript/operators/unary_plus.json
index 5df0ab138efe25..c2cbb9ca652d31 100644
--- a/javascript/operators/unary_plus.json
+++ b/javascript/operators/unary_plus.json
@@ -42,7 +42,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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+            "webview_ios": "mirror"
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diff --git a/javascript/operators/unsigned_right_shift.json b/javascript/operators/unsigned_right_shift.json
index 70857e42e897ba..684d59aaab2795 100644
--- a/javascript/operators/unsigned_right_shift.json
+++ b/javascript/operators/unsigned_right_shift.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
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diff --git a/javascript/operators/unsigned_right_shift_assignment.json b/javascript/operators/unsigned_right_shift_assignment.json
index ed5a2f7d9507c9..8ad0984028b252 100644
--- a/javascript/operators/unsigned_right_shift_assignment.json
+++ b/javascript/operators/unsigned_right_shift_assignment.json
@@ -42,7 +42,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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diff --git a/javascript/operators/void.json b/javascript/operators/void.json
index 116a0b9f23c6dc..0caef57fe92dc4 100644
--- a/javascript/operators/void.json
+++ b/javascript/operators/void.json
@@ -43,7 +43,8 @@
               "version_added": "3"
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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diff --git a/javascript/operators/yield.json b/javascript/operators/yield.json
index a1daf6357319c5..bad5abab822621 100644
--- a/javascript/operators/yield.json
+++ b/javascript/operators/yield.json
@@ -41,7 +41,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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diff --git a/javascript/operators/yield_star.json b/javascript/operators/yield_star.json
index 13b94db57beb25..e8a7516980256c 100644
--- a/javascript/operators/yield_star.json
+++ b/javascript/operators/yield_star.json
@@ -39,7 +39,8 @@
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             "samsunginternet_android": "mirror",
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diff --git a/javascript/regular_expressions.json b/javascript/regular_expressions.json
index 476e3aa4777e69..3e7e9a7541e618 100644
--- a/javascript/regular_expressions.json
+++ b/javascript/regular_expressions.json
@@ -7,7 +7,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Backreference",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-DecimalEscape",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -42,7 +43,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -57,7 +59,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Capturing_group",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
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@@ -92,7 +95,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
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@@ -107,7 +111,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_class",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClass",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
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@@ -142,7 +147,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -157,7 +163,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_class_escape",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClassEscape",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
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@@ -192,7 +199,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -207,7 +215,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Character_escape",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterEscape",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
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@@ -242,7 +251,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -253,6 +263,9 @@
         "unicode": {
           "__compat": {
             "description": "Unicode character escape: <code>\\u{...}</code>",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
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@@ -282,7 +295,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -298,7 +312,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Disjunction",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Disjunction",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
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@@ -333,7 +348,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -348,7 +364,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Input_boundary_assertion",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
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@@ -383,7 +400,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -398,7 +416,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Literal_character",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-PatternCharacter",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -433,7 +452,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -448,7 +468,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Lookahead_assertion",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -483,7 +504,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -497,6 +519,9 @@
           "description": "Lookbehind assertion: <code>(?&lt;=...)</code>, <code>(?&lt;!...)</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Lookbehind_assertion",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
+          "tags": [
+            "web-features:regexp"
+          ],
           "support": {
             "chrome": {
               "version_added": "62"
@@ -524,7 +549,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -538,6 +564,9 @@
           "description": "Modifier: <code>(?ims-ims:...)</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Modifier",
           "spec_url": "https://github.com/tc39/proposal-regexp-modifiers#syntax",
+          "tags": [
+            "web-features:regexp"
+          ],
           "support": {
             "chrome": {
               "version_added": "125"
@@ -548,7 +577,14 @@
             },
             "edge": "mirror",
             "firefox": {
-              "version_added": false,
+              "version_added": "preview",
+              "flags": [
+                {
+                  "type": "preference",
+                  "name": "javascript.options.experimental.regexp_modifiers",
+                  "value_to_set": "true"
+                }
+              ],
               "impl_url": "https://bugzil.la/1899813"
             },
             "firefox_android": "mirror",
@@ -566,7 +602,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": true,
@@ -580,6 +617,9 @@
           "description": "Named backreference: <code>\\k&lt;name&gt;</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Named_backreference",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-AtomEscape",
+          "tags": [
+            "web-features:regexp"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -607,7 +647,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -621,6 +662,9 @@
           "description": "Named capture group: <code>(?&lt;name&gt;...)</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Named_capturing_group",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
+          "tags": [
+            "web-features:regexp"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -648,7 +692,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -659,6 +704,9 @@
         "duplicate_named_capturing_groups": {
           "__compat": {
             "description": "Duplicate names in different disjunction alternatives are allowed",
+            "tags": [
+              "web-features:regexp"
+            ],
             "support": {
               "chrome": {
                 "version_added": "125"
@@ -686,7 +734,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -702,7 +751,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Non-capturing_group",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -737,7 +787,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -752,7 +803,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Quantifier",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Quantifier",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -787,7 +839,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -801,6 +854,9 @@
           "description": "Unicode character class escape: <code>\\p{...}</code>, <code>\\P{...}</code>",
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Unicode_character_class_escape",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-CharacterClassEscape",
+          "tags": [
+            "web-features:regexp"
+          ],
           "support": {
             "chrome": {
               "version_added": "64"
@@ -828,7 +884,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -843,7 +900,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Wildcard",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Atom",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -878,7 +936,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -893,7 +952,8 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Regular_expressions/Word_boundary_assertion",
           "spec_url": "https://tc39.es/ecma262/multipage/text-processing.html#prod-Assertion",
           "tags": [
-            "web-features:snapshot:ecmascript-3"
+            "web-features:snapshot:ecmascript-3",
+            "web-features:regexp"
           ],
           "support": {
             "chrome": {
@@ -928,7 +988,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/javascript/statements.json b/javascript/statements.json
index 5b5d5b235033dd..277672caa9e23a 100644
--- a/javascript/statements.json
+++ b/javascript/statements.json
@@ -38,7 +38,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -128,7 +130,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -177,7 +180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -230,7 +234,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -283,7 +288,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -332,7 +338,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -378,7 +385,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -428,7 +436,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -478,7 +487,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -524,7 +534,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -570,7 +581,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -612,7 +624,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -662,7 +675,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -706,7 +720,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -756,7 +771,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -803,7 +819,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -846,7 +863,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -887,7 +905,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -938,7 +957,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -978,7 +998,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1025,7 +1046,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1068,7 +1090,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1112,7 +1135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1153,7 +1177,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1204,7 +1229,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1257,7 +1283,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1298,7 +1325,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1312,7 +1340,8 @@
             "description": "Import attributes with <code>assert</code> syntax (formerly import assertions)",
             "support": {
               "chrome": {
-                "version_added": "91"
+                "version_added": "91",
+                "version_removed": "126"
               },
               "chrome_android": "mirror",
               "deno": {
@@ -1342,7 +1371,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1355,7 +1385,8 @@
               "description": "<code>assert {type: 'css'}</code>",
               "support": {
                 "chrome": {
-                  "version_added": "93"
+                  "version_added": "93",
+                  "version_removed": "126"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -1386,7 +1417,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1400,7 +1432,8 @@
               "description": "<code>assert {type: 'json'}</code>",
               "support": {
                 "chrome": {
-                  "version_added": "91"
+                  "version_added": "91",
+                  "version_removed": "126"
                 },
                 "chrome_android": "mirror",
                 "deno": {
@@ -1436,7 +1469,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1449,6 +1483,8 @@
         "import_attributes": {
           "__compat": {
             "description": "Import attributes (<code>with</code> syntax)",
+            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/import/with",
+            "spec_url": "https://tc39.es/proposal-import-attributes/#prod-WithClause",
             "support": {
               "chrome": {
                 "version_added": "123"
@@ -1466,9 +1502,15 @@
               "ie": {
                 "version_added": false
               },
-              "nodejs": {
-                "version_added": "20.10.0"
-              },
+              "nodejs": [
+                {
+                  "version_added": "20.10.0"
+                },
+                {
+                  "version_added": "18.20.0",
+                  "version_removed": "19.0.0"
+                }
+              ],
               "oculus": "mirror",
               "opera": "mirror",
               "opera_android": "mirror",
@@ -1477,7 +1519,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1518,7 +1561,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -1530,6 +1574,9 @@
           "type_json": {
             "__compat": {
               "description": "<code>with {type: 'json'}</code>",
+              "tags": [
+                "web-features:json-modules"
+              ],
               "support": {
                 "chrome": {
                   "version_added": "123"
@@ -1547,9 +1594,15 @@
                 "ie": {
                   "version_added": false
                 },
-                "nodejs": {
-                  "version_added": "20.10.0"
-                },
+                "nodejs": [
+                  {
+                    "version_added": "20.10.0"
+                  },
+                  {
+                    "version_added": "18.20.0",
+                    "version_removed": "19.0.0"
+                  }
+                ],
                 "oculus": "mirror",
                 "opera": "mirror",
                 "opera_android": "mirror",
@@ -1558,7 +1611,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -1602,7 +1656,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1641,7 +1696,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1691,7 +1747,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1763,7 +1820,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1812,7 +1870,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1858,7 +1917,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1907,7 +1967,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1957,7 +2018,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1995,7 +2057,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2045,7 +2108,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2094,7 +2158,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2143,7 +2208,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/lint/linter/test-versions.ts b/lint/linter/test-versions.ts
index edae3196733397..275ffe7b092601 100644
--- a/lint/linter/test-versions.ts
+++ b/lint/linter/test-versions.ts
@@ -43,7 +43,7 @@ const realValuesTargetBrowsers = [
 const realValuesRequired: Record<string, string[]> = {
   api: realValuesTargetBrowsers,
   css: realValuesTargetBrowsers,
-  html: [],
+  html: realValuesTargetBrowsers,
   http: realValuesTargetBrowsers,
   svg: realValuesTargetBrowsers,
   javascript: [...realValuesTargetBrowsers, 'nodejs', 'deno'],
diff --git a/mathml/attribute_values.json b/mathml/attribute_values.json
index 9bb573dd43ce1a..f33fa80afc881d 100644
--- a/mathml/attribute_values.json
+++ b/mathml/attribute_values.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/annotation-xml.json b/mathml/elements/annotation-xml.json
index 2add4f2f7374a2..07e8d235d63890 100644
--- a/mathml/elements/annotation-xml.json
+++ b/mathml/elements/annotation-xml.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/annotation.json b/mathml/elements/annotation.json
index 78d6e0fbfcafa6..0f80941ca43d8f 100644
--- a/mathml/elements/annotation.json
+++ b/mathml/elements/annotation.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/maction.json b/mathml/elements/maction.json
index beade9aa28c889..6faf75a265a9b2 100644
--- a/mathml/elements/maction.json
+++ b/mathml/elements/maction.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -60,7 +61,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -133,7 +136,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/math.json b/mathml/elements/math.json
index 5842fcdd393da9..d16aaee2a8611d 100644
--- a/mathml/elements/math.json
+++ b/mathml/elements/math.json
@@ -64,7 +64,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -97,7 +98,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/menclose.json b/mathml/elements/menclose.json
index effe7b324a8576..7195dc0e6f1a2e 100644
--- a/mathml/elements/menclose.json
+++ b/mathml/elements/menclose.json
@@ -25,7 +25,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -56,7 +57,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -87,7 +89,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -119,7 +122,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -151,7 +155,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -183,7 +188,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -215,7 +221,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -247,7 +254,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -279,7 +287,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -311,7 +320,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -343,7 +353,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -375,7 +386,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -407,7 +419,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -439,7 +452,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -471,7 +485,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -503,7 +518,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -535,7 +551,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -567,7 +584,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/mathml/elements/merror.json b/mathml/elements/merror.json
index 11f124b27cad4b..05965472ad04cb 100644
--- a/mathml/elements/merror.json
+++ b/mathml/elements/merror.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mfenced.json b/mathml/elements/mfenced.json
index e73077df77e235..acddf804a2d63e 100644
--- a/mathml/elements/mfenced.json
+++ b/mathml/elements/mfenced.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mfrac.json b/mathml/elements/mfrac.json
index 4cb83f4d7f4b55..155a904d1a966a 100644
--- a/mathml/elements/mfrac.json
+++ b/mathml/elements/mfrac.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               ],
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -166,7 +170,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -200,7 +205,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -234,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mi.json b/mathml/elements/mi.json
index f724d6d5f2f7e3..6991c2bd3a03f3 100644
--- a/mathml/elements/mi.json
+++ b/mathml/elements/mi.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mmultiscripts.json b/mathml/elements/mmultiscripts.json
index 653e3729be99a8..2d325c02700f24 100644
--- a/mathml/elements/mmultiscripts.json
+++ b/mathml/elements/mmultiscripts.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mn.json b/mathml/elements/mn.json
index 7312af6732b674..a56d28e22e091a 100644
--- a/mathml/elements/mn.json
+++ b/mathml/elements/mn.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mo.json b/mathml/elements/mo.json
index cb24ae610d7803..c59420afae10b9 100644
--- a/mathml/elements/mo.json
+++ b/mathml/elements/mo.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -123,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -156,7 +160,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -189,7 +194,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -222,7 +228,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -255,7 +262,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -289,7 +297,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -324,7 +333,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -357,7 +367,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -390,7 +401,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -423,7 +435,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mover.json b/mathml/elements/mover.json
index 0920fd24e4a7fe..ddf4a1888cf804 100644
--- a/mathml/elements/mover.json
+++ b/mathml/elements/mover.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mpadded.json b/mathml/elements/mpadded.json
index a1ac02675db5c9..d3065e06ecae5e 100644
--- a/mathml/elements/mpadded.json
+++ b/mathml/elements/mpadded.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -124,7 +127,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -158,7 +162,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,7 +198,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -227,7 +233,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -260,7 +267,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -293,7 +301,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -326,7 +335,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -359,7 +369,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mphantom.json b/mathml/elements/mphantom.json
index 4fde8d081b8e54..0feecc5baee8fe 100644
--- a/mathml/elements/mphantom.json
+++ b/mathml/elements/mphantom.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mprescripts.json b/mathml/elements/mprescripts.json
index 091bb8f03cba4d..064448d60da060 100644
--- a/mathml/elements/mprescripts.json
+++ b/mathml/elements/mprescripts.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mroot.json b/mathml/elements/mroot.json
index c155e5f69060d5..83d95e907306bc 100644
--- a/mathml/elements/mroot.json
+++ b/mathml/elements/mroot.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mrow.json b/mathml/elements/mrow.json
index aa98aa4fee47a0..8ba7623b1c9ab8 100644
--- a/mathml/elements/mrow.json
+++ b/mathml/elements/mrow.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/ms.json b/mathml/elements/ms.json
index ced5205243c062..ec920930075f20 100644
--- a/mathml/elements/ms.json
+++ b/mathml/elements/ms.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mspace.json b/mathml/elements/mspace.json
index fc85502744f1b2..6445543cb8491b 100644
--- a/mathml/elements/mspace.json
+++ b/mathml/elements/mspace.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -125,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -159,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/msqrt.json b/mathml/elements/msqrt.json
index edbf54cc0b9987..c9fb9c5bad8814 100644
--- a/mathml/elements/msqrt.json
+++ b/mathml/elements/msqrt.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mstyle.json b/mathml/elements/mstyle.json
index b8ac32ea8ba8bd..25807080158ad5 100644
--- a/mathml/elements/mstyle.json
+++ b/mathml/elements/mstyle.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -104,7 +106,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +176,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +211,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/msub.json b/mathml/elements/msub.json
index 02e5f726272849..759a975bf0374f 100644
--- a/mathml/elements/msub.json
+++ b/mathml/elements/msub.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/msubsup.json b/mathml/elements/msubsup.json
index 6eef8bc62c1905..fbb9b308582ed4 100644
--- a/mathml/elements/msubsup.json
+++ b/mathml/elements/msubsup.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/msup.json b/mathml/elements/msup.json
index 2326a966547499..dbdadfadd173cc 100644
--- a/mathml/elements/msup.json
+++ b/mathml/elements/msup.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mtable.json b/mathml/elements/mtable.json
index ce7c8bc3549787..ee1b609dfee6c7 100644
--- a/mathml/elements/mtable.json
+++ b/mathml/elements/mtable.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -89,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,7 +124,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +157,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +190,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -217,7 +223,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -249,7 +256,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -281,7 +289,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -313,7 +322,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -345,7 +355,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -378,7 +389,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/mathml/elements/mtd.json b/mathml/elements/mtd.json
index 7068ca216ec999..7b538061ac4c00 100644
--- a/mathml/elements/mtd.json
+++ b/mathml/elements/mtd.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -90,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -122,7 +125,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -155,7 +159,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/mtext.json b/mathml/elements/mtext.json
index 5e91fdb5da98fa..3cea4b71246ad0 100644
--- a/mathml/elements/mtext.json
+++ b/mathml/elements/mtext.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/mathml/elements/mtr.json b/mathml/elements/mtr.json
index 6783f8259c2eb6..4dbb3c3c5aa3eb 100644
--- a/mathml/elements/mtr.json
+++ b/mathml/elements/mtr.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -89,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/munder.json b/mathml/elements/munder.json
index a751eb73be904b..81e8a90d26215f 100644
--- a/mathml/elements/munder.json
+++ b/mathml/elements/munder.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/mathml/elements/munderover.json b/mathml/elements/munderover.json
index d86656aea949f6..94a03feec8ac4d 100644
--- a/mathml/elements/munderover.json
+++ b/mathml/elements/munderover.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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             "experimental": false,
@@ -58,7 +59,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
diff --git a/mathml/elements/semantics.json b/mathml/elements/semantics.json
index 1c7de43b9d185d..eda8e991cf0319 100644
--- a/mathml/elements/semantics.json
+++ b/mathml/elements/semantics.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -59,7 +60,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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             "status": {
               "experimental": false,
diff --git a/mathml/global_attributes.json b/mathml/global_attributes.json
index f776cfbd1c3882..47a1e161b72846 100644
--- a/mathml/global_attributes.json
+++ b/mathml/global_attributes.json
@@ -31,7 +31,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -71,7 +72,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -106,7 +108,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -148,7 +151,8 @@
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             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -190,7 +194,8 @@
               "impl_url": "https://trac.webkit.org/changeset/62968"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -235,7 +240,8 @@
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             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
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@@ -268,7 +274,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -303,7 +310,8 @@
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               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
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@@ -337,7 +345,8 @@
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               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
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@@ -379,7 +388,8 @@
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             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
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diff --git a/package-lock.json b/package-lock.json
index 23102e31d7264d..ff5ddc6f6e5e25 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,24 +1,24 @@
 {
   "name": "@mdn/browser-compat-data",
-  "version": "5.5.45",
+  "version": "5.5.51",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@mdn/browser-compat-data",
-      "version": "5.5.45",
+      "version": "5.5.51",
       "hasInstallScript": true,
       "license": "CC0-1.0",
       "devDependencies": {
         "@babel/eslint-parser": "~7.25.1",
-        "@babel/plugin-syntax-import-assertions": "~7.24.1",
+        "@babel/plugin-syntax-import-assertions": "~7.25.6",
         "@ddbeck/mdn-content-inventory": "^0.2.20240621",
         "@desertnet/html-parser": "~1.0.1",
         "@swc/cli": "^0.4.0",
-        "@swc/core": "1.7.6",
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         "@types/mocha": "~10.0.0",
-        "@types/node": "~22.1.0",
+        "@types/node": "~22.5.0",
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@@ -37,24 +37,24 @@
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-        "eslint-plugin-import": "~2.29.0",
-        "eslint-plugin-jsdoc": "~50.0.0",
+        "eslint-plugin-import": "~2.30.0",
+        "eslint-plugin-jsdoc": "~50.2.1",
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-        "eslint-plugin-prefer-arrow-functions": "~3.3.1",
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         "fast-json-stable-stringify": "~2.1.0",
-        "fdir": "~6.2.0",
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         "lint-staged": "^15.0.1",
         "mocha": "~10.7.0",
         "open-cli": "~8.0.0",
-        "ora": "~8.0.1",
+        "ora": "~8.1.0",
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-        "sinon": "^18.0.0",
+        "sinon": "^19.0.1",
         "ts-node": "~10.9.1",
-        "typescript": "~5.5.2",
+        "typescript": "~5.6.2",
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@@ -436,12 +436,12 @@
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+      "version": "7.25.6",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-import-assertions/-/plugin-syntax-import-assertions-7.25.6.tgz",
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       "dev": true,
       "dependencies": {
-        "@babel/helper-plugin-utils": "^7.24.7"
+        "@babel/helper-plugin-utils": "^7.24.8"
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@@ -531,9 +531,9 @@
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+      "version": "0.2.20240913",
+      "resolved": "https://registry.npmjs.org/@ddbeck/mdn-content-inventory/-/mdn-content-inventory-0.2.20240913.tgz",
+      "integrity": "sha512-NsljRUTSIBE7RPVSmHj04w+neXWJuxXLC4uZKocRXjBqrmnv+iB5gZFElicKHT+Xb8XtwSQsgj+0Q2kCE+jRzQ==",
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@@ -552,14 +552,14 @@
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+      "version": "0.48.0",
+      "resolved": "https://registry.npmjs.org/@es-joy/jsdoccomment/-/jsdoccomment-0.48.0.tgz",
+      "integrity": "sha512-G6QUWIcC+KvSwXNsJyDTHvqUdNoAVJPPgkc3+Uk4WBKqZvoXhlvazOgm9aL0HwihJLQf0l+tOE2UFzXBqCqgDw==",
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         "comment-parser": "1.4.1",
         "esquery": "^1.6.0",
-        "jsdoc-type-pratt-parser": "~4.0.0"
+        "jsdoc-type-pratt-parser": "~4.1.0"
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         "node": ">=16"
@@ -965,6 +965,15 @@
         "node": ">= 8"
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+    "node_modules/@nolyfill/is-core-module": {
+      "version": "1.0.39",
+      "resolved": "https://registry.npmjs.org/@nolyfill/is-core-module/-/is-core-module-1.0.39.tgz",
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+      "dev": true,
+      "engines": {
+        "node": ">=12.4.0"
+      }
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       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/@pkgjs/parseargs/-/parseargs-0.11.0.tgz",
@@ -987,6 +996,12 @@
         "url": "https://opencollective.com/unts"
       }
     },
+    "node_modules/@rtsao/scc": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@rtsao/scc/-/scc-1.1.0.tgz",
+      "integrity": "sha512-zt6OdqaDoOnJ1ZYsCYGt9YmWzDXl4vQdKTyJev62gFhRGKdx7mcT54V9KIjg+d2wi9EXsPvAPKe7i7WjfVWB8g==",
+      "dev": true
+    },
     "node_modules/@sindresorhus/is": {
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       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-4.6.0.tgz",
@@ -1009,38 +1024,38 @@
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+      "version": "13.0.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-13.0.2.tgz",
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       "dev": true,
       "dependencies": {
-        "@sinonjs/commons": "^3.0.0"
+        "@sinonjs/commons": "^3.0.1"
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-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-8.0.0.tgz",
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+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-8.0.2.tgz",
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       "dev": true,
       "dependencies": {
-        "@sinonjs/commons": "^2.0.0",
+        "@sinonjs/commons": "^3.0.1",
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-        "type-detect": "^4.0.8"
+        "type-detect": "^4.1.0"
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-      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-2.0.0.tgz",
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+    "node_modules/@sinonjs/samsam/node_modules/type-detect": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==",
       "dev": true,
-      "dependencies": {
-        "type-detect": "4.0.8"
+      "engines": {
+        "node": ">=4"
       }
     },
     "node_modules/@sinonjs/text-encoding": {
-      "version": "0.7.2",
-      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.2.tgz",
-      "integrity": "sha512-sXXKG+uL9IrKqViTtao2Ws6dy0znu9sOaP1di/jKGW1M6VssO8vlpXCQcpZ+jisQ1tTFAC5Jo/EOzFbggBagFQ==",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.3.tgz",
+      "integrity": "sha512-DE427ROAphMQzU4ENbliGYrBSYPXF+TtLg9S8vzeA+OF4ZKzoDdzfL8sxuMUGS/lgRhM6j1URSk9ghf7Xo1tyA==",
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@@ -1090,9 +1105,9 @@
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-      "resolved": "https://registry.npmjs.org/@swc/core/-/core-1.7.6.tgz",
-      "integrity": "sha512-FZxyao9eQks1MRmUshgsZTmlg/HB2oXK5fghkoWJm/1CU2q2kaJlVDll2as5j+rmWiwkp0Gidlq8wlXcEEAO+g==",
+      "version": "1.7.26",
+      "resolved": "https://registry.npmjs.org/@swc/core/-/core-1.7.26.tgz",
+      "integrity": "sha512-f5uYFf+TmMQyYIoxkn/evWhNGuUzC730dFwAKGwBVHHVoPyak1/GvJUm6i1SKl+2Hrj9oN0i3WSoWWZ4pgI8lw==",
       "dev": true,
       "hasInstallScript": true,
       "dependencies": {
@@ -1107,16 +1122,16 @@
         "url": "https://opencollective.com/swc"
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-        "@swc/core-darwin-x64": "1.7.6",
-        "@swc/core-linux-arm-gnueabihf": "1.7.6",
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-        "@swc/core-linux-x64-musl": "1.7.6",
-        "@swc/core-win32-arm64-msvc": "1.7.6",
-        "@swc/core-win32-ia32-msvc": "1.7.6",
-        "@swc/core-win32-x64-msvc": "1.7.6"
+        "@swc/core-darwin-arm64": "1.7.26",
+        "@swc/core-darwin-x64": "1.7.26",
+        "@swc/core-linux-arm-gnueabihf": "1.7.26",
+        "@swc/core-linux-arm64-gnu": "1.7.26",
+        "@swc/core-linux-arm64-musl": "1.7.26",
+        "@swc/core-linux-x64-gnu": "1.7.26",
+        "@swc/core-linux-x64-musl": "1.7.26",
+        "@swc/core-win32-arm64-msvc": "1.7.26",
+        "@swc/core-win32-ia32-msvc": "1.7.26",
+        "@swc/core-win32-x64-msvc": "1.7.26"
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@@ -1128,9 +1143,9 @@
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+      "version": "1.7.26",
+      "resolved": "https://registry.npmjs.org/@swc/core-darwin-arm64/-/core-darwin-arm64-1.7.26.tgz",
+      "integrity": "sha512-FF3CRYTg6a7ZVW4yT9mesxoVVZTrcSWtmZhxKCYJX9brH4CS/7PRPjAKNk6kzWgWuRoglP7hkjQcd6EpMcZEAw==",
       "cpu": [
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@@ -1144,9 +1159,9 @@
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-      "resolved": "https://registry.npmjs.org/@swc/core-darwin-x64/-/core-darwin-x64-1.7.6.tgz",
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+      "version": "1.7.26",
+      "resolved": "https://registry.npmjs.org/@swc/core-darwin-x64/-/core-darwin-x64-1.7.26.tgz",
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@@ -1160,9 +1175,9 @@
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+      "version": "1.7.26",
+      "resolved": "https://registry.npmjs.org/@swc/core-linux-arm-gnueabihf/-/core-linux-arm-gnueabihf-1.7.26.tgz",
+      "integrity": "sha512-VYPFVJDO5zT5U3RpCdHE5v1gz4mmR8BfHecUZTmD2v1JeFY6fv9KArJUpjrHEEsjK/ucXkQFmJ0jaiWXmpOV9Q==",
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@@ -1176,9 +1191,9 @@
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-          "url": "https://paypal.me/jimmywarting"
-        }
-      ],
-      "engines": {
-        "node": ">=10.5.0"
-      }
-    },
-    "node_modules/node-fetch": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-3.3.2.tgz",
-      "integrity": "sha512-dRB78srN/l6gqWulah9SrxeYnxeddIG30+GOqK/9OlLVyLg3HPnr6SqOWTWOXKRwC2eGYCkZ59NNuSgvSrpgOA==",
-      "dev": true,
-      "dependencies": {
-        "data-uri-to-buffer": "^4.0.0",
-        "fetch-blob": "^3.1.4",
-        "formdata-polyfill": "^4.0.10"
-      },
-      "engines": {
-        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/node-fetch"
-      }
-    },
     "node_modules/node-gyp-build": {
       "version": "4.8.1",
       "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.8.1.tgz",
@@ -7164,19 +6902,19 @@
       }
     },
     "node_modules/ora": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/ora/-/ora-8.0.1.tgz",
-      "integrity": "sha512-ANIvzobt1rls2BDny5fWZ3ZVKyD6nscLvfFRpQgfWsythlcsVUC9kL0zq6j2Z5z9wwp1kd7wpsD/T9qNPVLCaQ==",
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/ora/-/ora-8.1.0.tgz",
+      "integrity": "sha512-GQEkNkH/GHOhPFXcqZs3IDahXEQcQxsSjEkK4KvEEST4t7eNzoMjxTzef+EZ+JluDEV+Raoi3WQ2CflnRdSVnQ==",
       "dev": true,
       "dependencies": {
         "chalk": "^5.3.0",
-        "cli-cursor": "^4.0.0",
+        "cli-cursor": "^5.0.0",
         "cli-spinners": "^2.9.2",
         "is-interactive": "^2.0.0",
         "is-unicode-supported": "^2.0.0",
         "log-symbols": "^6.0.0",
-        "stdin-discarder": "^0.2.1",
-        "string-width": "^7.0.0",
+        "stdin-discarder": "^0.2.2",
+        "string-width": "^7.2.0",
         "strip-ansi": "^7.1.0"
       },
       "engines": {
@@ -7450,10 +7188,13 @@
       "dev": true
     },
     "node_modules/path-to-regexp": {
-      "version": "6.2.2",
-      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-6.2.2.tgz",
-      "integrity": "sha512-GQX3SSMokngb36+whdpRXE+3f9V8UzyAorlYvOGx87ufGHehNTn5lCxrKtLyZ4Yl/wEKnNnr98ZzOwwDZV5ogw==",
-      "dev": true
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.1.0.tgz",
+      "integrity": "sha512-Bqn3vc8CMHty6zuD+tG23s6v2kwxslHEhTj4eYaVKGIEB+YX/2wd0/rgXLFD9G9id9KCtbVy/3ZgmvZjpa0UdQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=16"
+      }
     },
     "node_modules/path-type": {
       "version": "4.0.0",
@@ -7914,21 +7655,48 @@
       }
     },
     "node_modules/restore-cursor": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-4.0.0.tgz",
-      "integrity": "sha512-I9fPXU9geO9bHOt9pHHOhOkYerIMsmVaWB0rA2AI9ERh/+x/i7MV5HKBNrg+ljO5eoPVgCcnFuRjJ9uH6I/3eg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-5.1.0.tgz",
+      "integrity": "sha512-oMA2dcrw6u0YfxJQXm342bFKX/E4sG9rbTzO9ptUcR/e8A33cHuvStiYOwH7fszkZlZ1z/ta9AAoPk2F4qIOHA==",
       "dev": true,
       "dependencies": {
-        "onetime": "^5.1.0",
-        "signal-exit": "^3.0.2"
+        "onetime": "^7.0.0",
+        "signal-exit": "^4.1.0"
       },
       "engines": {
-        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+        "node": ">=18"
       },
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/restore-cursor/node_modules/onetime": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/onetime/-/onetime-7.0.0.tgz",
+      "integrity": "sha512-VXJjc87FScF88uafS3JllDgvAm+c/Slfz06lorj2uAY34rlUu0Nt+v8wreiImcrgAjjIHp1rXpTDlLOGw29WwQ==",
+      "dev": true,
+      "dependencies": {
+        "mimic-function": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/restore-cursor/node_modules/signal-exit": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-4.1.0.tgz",
+      "integrity": "sha512-bzyZ1e88w9O1iNJbKnOlvYTrWPDl46O1bG0D3XInv+9tkPrxrN8jUUTiFlDkkmKWgn1M6CfIA13SuGqOa9Korw==",
+      "dev": true,
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/reusify": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
@@ -8229,23 +7997,32 @@
       "dev": true
     },
     "node_modules/sinon": {
-      "version": "18.0.0",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-18.0.0.tgz",
-      "integrity": "sha512-+dXDXzD1sBO6HlmZDd7mXZCR/y5ECiEiGCBSGuFD/kZ0bDTofPYc6JaeGmPSF+1j1MejGUWkORbYOLDyvqCWpA==",
+      "version": "19.0.2",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-19.0.2.tgz",
+      "integrity": "sha512-euuToqM+PjO4UgXeLETsfQiuoyPXlqFezr6YZDFwHR3t4qaX0fZUe1MfPMznTL5f8BWrVS89KduLdMUsxFCO6g==",
       "dev": true,
       "dependencies": {
         "@sinonjs/commons": "^3.0.1",
-        "@sinonjs/fake-timers": "^11.2.2",
-        "@sinonjs/samsam": "^8.0.0",
-        "diff": "^5.2.0",
-        "nise": "^6.0.0",
-        "supports-color": "^7"
+        "@sinonjs/fake-timers": "^13.0.2",
+        "@sinonjs/samsam": "^8.0.1",
+        "diff": "^7.0.0",
+        "nise": "^6.1.1",
+        "supports-color": "^7.2.0"
       },
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/sinon"
       }
     },
+    "node_modules/sinon/node_modules/diff": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-7.0.0.tgz",
+      "integrity": "sha512-PJWHUb1RFevKCwaFA9RlG5tCd+FO5iRh9A8HEtkmBH2Li03iJriB6m6JIN4rGz3K3JLawI7/veA1xzRKP6ISBw==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
     "node_modules/slash": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
@@ -8703,19 +8480,6 @@
       "integrity": "sha512-N+8UisAXDGk8PFXP4HAzVR9nbfmVJ3zYLAWiTIoqC5v5isinhr+r5uaO8+7r3BMfuNIufIsA7RdpVgacC2cSpw==",
       "dev": true
     },
-    "node_modules/timers-ext": {
-      "version": "0.1.8",
-      "resolved": "https://registry.npmjs.org/timers-ext/-/timers-ext-0.1.8.tgz",
-      "integrity": "sha512-wFH7+SEAcKfJpfLPkrgMPvvwnEtj8W4IurvEyrKsDleXnKLCDw71w8jltvfLa8Rm4qQxxT4jmDBYbJG/z7qoww==",
-      "dev": true,
-      "dependencies": {
-        "es5-ext": "^0.10.64",
-        "next-tick": "^1.1.0"
-      },
-      "engines": {
-        "node": ">=0.12"
-      }
-    },
     "node_modules/to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
@@ -8873,12 +8637,6 @@
       "integrity": "sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ==",
       "dev": true
     },
-    "node_modules/type": {
-      "version": "2.7.3",
-      "resolved": "https://registry.npmjs.org/type/-/type-2.7.3.tgz",
-      "integrity": "sha512-8j+1QmAbPvLZow5Qpi6NCaN8FB60p/6x8/vfNqOk/hC+HuvFZhL4+WfekuhQLiqFZXOgQdrs3B+XxEmCc6b3FQ==",
-      "dev": true
-    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -8983,9 +8741,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.5.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
-      "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
+      "version": "5.6.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.6.2.tgz",
+      "integrity": "sha512-NW8ByodCSNCwZeghjN3o+JX5OFH0Ojg6sadjEKY4huZ52TqbJTJnDo5+Tw98lSy63NZvi4n+ez5m2u5d4PkZyw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -9011,9 +8769,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "6.13.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.13.0.tgz",
-      "integrity": "sha512-xtFJHudx8S2DSoujjMd1WeWvn7KKWFRESZTMeL1RptAYERu29D6jphMjjY+vn96jvN3kVPDNxU/E13VTaXj6jg==",
+      "version": "6.19.6",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.19.6.tgz",
+      "integrity": "sha512-e/vggGopEfTKSvj4ihnOLTsqhrKRN3LeO6qSN/GxohhuRv8qH9bNQ4B8W7e/vFL+0XTnmHPB4/kegunZGA4Org==",
       "dev": true
     },
     "node_modules/unique-string": {
@@ -9117,20 +8875,11 @@
       }
     },
     "node_modules/web-specs": {
-      "version": "3.16.0",
-      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.16.0.tgz",
-      "integrity": "sha512-rlLpmrkEm/64vY5WqRZvd6cE49Z+qob6hH1SeE8uFV9BQRxxHmOh147Ku9i45BDp0HwQ51hp58pIYLJf9KvNOA==",
+      "version": "3.21.0",
+      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.21.0.tgz",
+      "integrity": "sha512-aZq8MjQKLkhcm/CmbuMMNmZrAGZqIdfKCs4I1+GjSrK8aYegp1wNkTJFoRc6pxeDkno1MqxKQ1vyiz1X/M9xHQ==",
       "dev": true
     },
-    "node_modules/web-streams-polyfill": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz",
-      "integrity": "sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==",
-      "dev": true,
-      "engines": {
-        "node": ">= 8"
-      }
-    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
diff --git a/package.json b/package.json
index 085f6296a830a4..bc9f6ac4c9aa84 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mdn/browser-compat-data",
-  "version": "5.5.45",
+  "version": "5.5.51",
   "description": "Browser compatibility data provided by MDN Web Docs",
   "main": "index.ts",
   "type": "module",
@@ -45,14 +45,14 @@
   "homepage": "https://github.com/mdn/browser-compat-data#readme",
   "devDependencies": {
     "@babel/eslint-parser": "~7.25.1",
-    "@babel/plugin-syntax-import-assertions": "~7.24.1",
+    "@babel/plugin-syntax-import-assertions": "~7.25.6",
     "@ddbeck/mdn-content-inventory": "^0.2.20240621",
     "@desertnet/html-parser": "~1.0.1",
     "@swc/cli": "^0.4.0",
-    "@swc/core": "1.7.6",
+    "@swc/core": "1.7.26",
     "@types/deep-diff": "~1.0.1",
     "@types/mocha": "~10.0.0",
-    "@types/node": "~22.1.0",
+    "@types/node": "~22.5.0",
     "@types/sinon": "^17.0.0",
     "@types/yargs": "~17.0.10",
     "@typescript-eslint/eslint-plugin": "~7.18.0",
@@ -71,24 +71,24 @@
     "eslint": "~8.57.0",
     "eslint-config-standard": "~17.1.0",
     "eslint-import-resolver-typescript": "^3.5.2",
-    "eslint-plugin-import": "~2.29.0",
-    "eslint-plugin-jsdoc": "~50.0.0",
+    "eslint-plugin-import": "~2.30.0",
+    "eslint-plugin-jsdoc": "~50.2.1",
     "eslint-plugin-node": "~11.1.0",
-    "eslint-plugin-prefer-arrow-functions": "~3.3.1",
+    "eslint-plugin-prefer-arrow-functions": "~3.4.1",
     "eslint-plugin-promise": "~6.6.0",
     "eslint-plugin-unicorn": "^55.0.0",
     "fast-json-stable-stringify": "~2.1.0",
-    "fdir": "~6.2.0",
+    "fdir": "~6.3.0",
     "husky": "^9.1.1",
     "json-schema-to-typescript": "~15.0.0",
     "lint-staged": "^15.0.1",
     "mocha": "~10.7.0",
     "open-cli": "~8.0.0",
-    "ora": "~8.0.1",
+    "ora": "~8.1.0",
     "prettier": "~3.3.1",
-    "sinon": "^18.0.0",
+    "sinon": "^19.0.1",
     "ts-node": "~10.9.1",
-    "typescript": "~5.5.2",
+    "typescript": "~5.6.2",
     "web-specs": "^3.0.0",
     "yargs": "~17.7.0"
   },
diff --git a/schemas/compat-data-schema.md b/schemas/compat-data-schema.md
index d36cfc19013431..0b38a3746eab46 100644
--- a/schemas/compat-data-schema.md
+++ b/schemas/compat-data-schema.md
@@ -210,7 +210,8 @@ The currently accepted browser identifiers should be declared in alphabetical or
 - `safari`, Safari on macOS
 - `safari_ios`, Safari on iOS, based on the iOS version
 - `samsunginternet_android`, the Samsung Internet browser (Android version)
-- `webview_android`, WebView, the built-in browser for Android
+- `webview_android`, WebView, the embedded browser for Android applications
+- `webview_ios`, WebKit WebView, the embedded browser for iOS applications, based on the iOS version
 
 Desktop browser identifiers are mandatory, with the `version_added` property set to `null` if support is unknown.
 
diff --git a/schemas/compat-data.schema.json b/schemas/compat-data.schema.json
index 0bb5dc336c94a4..b244ea90c482c2 100644
--- a/schemas/compat-data.schema.json
+++ b/schemas/compat-data.schema.json
@@ -188,7 +188,8 @@
           "safari",
           "safari_ios",
           "samsunginternet_android",
-          "webview_android"
+          "webview_android",
+          "webview_ios"
         ]
       },
       "additionalProperties": {
diff --git a/scripts/migrations/011-set-webview-ios-to-mirror.ts b/scripts/migrations/011-set-webview-ios-to-mirror.ts
new file mode 100644
index 00000000000000..99400072aece33
--- /dev/null
+++ b/scripts/migrations/011-set-webview-ios-to-mirror.ts
@@ -0,0 +1,107 @@
+/* This file is a part of @mdn/browser-compat-data
+ * See LICENSE file for more information. */
+
+import fs from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+import esMain from 'es-main';
+
+import { InternalSupportStatement } from '../../types/index.js';
+import { CompatStatement } from '../../types/types.js';
+import { IS_WINDOWS } from '../../lint/utils.js';
+
+const dirname = fileURLToPath(new URL('.', import.meta.url));
+
+/**
+ * Check to see if the key is __compat and set 'webview_ios' to 'mirror'
+ * @param key The key in the object
+ * @param value The value of the key
+ * @returns The new value with 'webview_ios' set to 'mirror'
+ */
+export const doSetWebViewIOSToMirror = (
+  key: string,
+  value: CompatStatement,
+): CompatStatement => {
+  if (key === '__compat') {
+    if (value.support.webview_ios === undefined) {
+      (value.support as InternalSupportStatement).webview_ios = 'mirror';
+    }
+  }
+  return value;
+};
+
+/**
+ * Set '__compat.support.webview_ios' to 'mirror' within all the data in a
+ * specified file. The function will then automatically write any needed
+ * changes back into the file.
+ * @param filename The filename to perform migration upon
+ */
+export const setWebViewIOSToMirror = (filename: string): void => {
+  let actual = fs.readFileSync(filename, 'utf-8').trim();
+  let expected = JSON.stringify(
+    JSON.parse(actual, doSetWebViewIOSToMirror),
+    null,
+    2,
+  );
+
+  if (IS_WINDOWS) {
+    // prevent false positives from git.core.autocrlf on Windows
+    actual = actual.replace(/\r/g, '');
+    expected = expected.replace(/\r/g, '');
+  }
+
+  if (actual !== expected) {
+    fs.writeFileSync(filename, expected + '\n', 'utf-8');
+  }
+};
+
+/**
+ * Recursively load one or more files and/or directories passed as arguments
+ * and perform setting '__compat.support.webview_ios' to 'mirror' for.
+ * @param files The files to load and perform migration upon
+ */
+const load = (...files: string[]): void => {
+  for (let file of files) {
+    if (file.indexOf(dirname) !== 0) {
+      file = path.resolve(dirname, '..', '..', file);
+    }
+
+    if (!fs.existsSync(file)) {
+      continue; // Ignore non-existent files
+    }
+
+    if (fs.statSync(file).isFile()) {
+      if (path.extname(file) === '.json') {
+        setWebViewIOSToMirror(file);
+      }
+
+      continue;
+    }
+
+    const subFiles = fs
+      .readdirSync(file)
+      .map((subfile) => path.join(file, subfile));
+
+    load(...subFiles);
+  }
+};
+
+if (esMain(import.meta)) {
+  if (process.argv[2]) {
+    load(process.argv[2]);
+  } else {
+    load(
+      'api',
+      'css',
+      'html',
+      'http',
+      'svg',
+      'javascript',
+      'mathml',
+      'test',
+      'webassembly',
+      'webdriver',
+    );
+  }
+}
diff --git a/scripts/traverse.ts b/scripts/traverse.ts
index fdf2dc179b0a5a..f05d689ce5e839 100644
--- a/scripts/traverse.ts
+++ b/scripts/traverse.ts
@@ -34,7 +34,7 @@ export function* iterateFeatures(
         if (obj[i].__compat) {
           if (tag) {
             const tags = obj[i].__compat?.tags;
-            if (tags && tags.includes(tag)) {
+            if ((tags && tags.includes(tag)) || (!tags && tag == 'false')) {
               yield `${identifier}${i}`;
             }
           } else {
@@ -78,6 +78,13 @@ export function* iterateFeatures(
                   if (values.length == 0 || values.includes('null')) {
                     yield `${identifier}${i}`;
                   }
+                } else if (values.includes('≤') || values.includes('ranged')) {
+                  if (
+                    String(browserData[range].version_added).startsWith('≤') ||
+                    String(browserData[range].version_removed).startsWith('≤')
+                  ) {
+                    yield `${identifier}${i}`;
+                  }
                 } else if (
                   values.length == 0 ||
                   values.includes(String(browserData[range].version_added)) ||
@@ -194,7 +201,7 @@ if (esMain(import.meta)) {
         .option('filter', {
           alias: 'f',
           describe:
-            'Filter by version value. May repeat. Set to "mirror" for mirrored entries, and "nonmirror" for non-mirrored entries.',
+            'Filter by version value. May repeat. Set to "≤" or "ranged" for ranged values (ex. ≤58), "mirror" for mirrored entries, and "nonmirror" for non-mirrored entries.',
           type: 'array',
           string: true,
           nargs: 1,
@@ -202,7 +209,8 @@ if (esMain(import.meta)) {
         })
         .option('tag', {
           alias: 't',
-          describe: 'Filter by tag value.',
+          describe:
+            'Filter by tag value. Set to `false` to search for features with no tags.',
           type: 'string',
           nargs: 1,
           default: '',
@@ -222,6 +230,12 @@ if (esMain(import.meta)) {
           nargs: 1,
           default: 10,
         })
+        .option('show-count', {
+          alias: 'c',
+          describe: 'Show the count of features traversed at the end',
+          type: 'boolean',
+          default: process.stdout.isTTY,
+        })
         .example(
           'npm run traverse -- --browser=safari -n',
           'Find all features containing non-real Safari entries',
@@ -241,6 +255,10 @@ if (esMain(import.meta)) {
         .example(
           'npm run traverse -- -t web-features:idle-detection',
           'Find all features tagged with web-features:idle-detection.',
+        )
+        .example(
+          'npm run traverse -- -t false',
+          'Find all features with no tags.',
         );
     },
   );
@@ -255,7 +273,9 @@ if (esMain(import.meta)) {
     argv.tag,
   );
   console.log(features.join('\n'));
-  console.log(features.length);
+  if (argv.showCount) {
+    console.log(features.length);
+  }
 }
 
 export default main;
diff --git a/scripts/update-browser-releases/index.ts b/scripts/update-browser-releases/index.ts
index c72730c5682ff9..02a9072ff08f51 100644
--- a/scripts/update-browser-releases/index.ts
+++ b/scripts/update-browser-releases/index.ts
@@ -167,7 +167,7 @@ const options = {
     browserName: 'Safari for Desktop',
     bcdFile: './browsers/safari.json',
     bcdBrowserName: 'safari',
-    skippedReleases: ['17.6'],
+    skippedReleases: [],
     releaseNoteJSON:
       'https://developer.apple.com/tutorials/data/documentation/safari-release-notes.json',
     releaseNoteURLBase: 'https://developer.apple.com',
@@ -176,7 +176,16 @@ const options = {
     browserName: 'Safari for iOS',
     bcdFile: './browsers/safari_ios.json',
     bcdBrowserName: 'safari_ios',
-    skippedReleases: ['12.1', '13.1', '14.1', '17.6'],
+    skippedReleases: ['12.1', '13.1', '14.1'],
+    releaseNoteJSON:
+      'https://developer.apple.com/tutorials/data/documentation/safari-release-notes.json',
+    releaseNoteURLBase: 'https://developer.apple.com',
+  },
+  webview_ios: {
+    browserName: 'WKWebView for iOS',
+    bcdFile: './browsers/webview_ios.json',
+    bcdBrowserName: 'webview_ios',
+    skippedReleases: ['12.1', '13.1', '14.1'],
     releaseNoteJSON:
       'https://developer.apple.com/tutorials/data/documentation/safari-release-notes.json',
     releaseNoteURLBase: 'https://developer.apple.com',
@@ -225,6 +234,11 @@ if (updateSafari && updateMobile) {
   result += (result && add ? '\n' : '') + add;
 }
 
+if (updateSafari && updateMobile) {
+  const add = await updateSafariReleases(options.webview_ios);
+  result += (result && add ? '\n' : '') + add;
+}
+
 if (result) {
   console.log(result);
 }
diff --git a/svg/elements/a.json b/svg/elements/a.json
index 1e891e880631f3..76c4618aa4a001 100644
--- a/svg/elements/a.json
+++ b/svg/elements/a.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -201,7 +206,8 @@
               "samsunginternet_android": {
                 "version_added": "7.2"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +242,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -272,7 +279,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -308,7 +316,8 @@
                 "samsunginternet_android": {
                   "version_added": "7.2"
                 },
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -344,7 +353,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -384,7 +394,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -424,7 +435,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -459,7 +471,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -492,7 +505,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -533,7 +547,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -566,7 +581,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -599,7 +615,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/animate.json b/svg/elements/animate.json
index 92189bf136278a..7e80834f1c54f9 100644
--- a/svg/elements/animate.json
+++ b/svg/elements/animate.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +240,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -268,7 +275,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -306,7 +314,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -338,7 +347,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/animateMotion.json b/svg/elements/animateMotion.json
index cc08b52df337ed..37c6bb6023d11d 100644
--- a/svg/elements/animateMotion.json
+++ b/svg/elements/animateMotion.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -132,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -166,7 +170,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -198,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -230,7 +236,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -262,7 +269,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -300,7 +308,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/animateTransform.json b/svg/elements/animateTransform.json
index a95354f704beed..6350832c23745b 100644
--- a/svg/elements/animateTransform.json
+++ b/svg/elements/animateTransform.json
@@ -34,7 +34,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -210,7 +215,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +248,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -274,7 +281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/circle.json b/svg/elements/circle.json
index db9247c6abd4dd..a250c4cbf7abde 100644
--- a/svg/elements/circle.json
+++ b/svg/elements/circle.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -166,7 +170,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -201,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -241,7 +247,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/clipPath.json b/svg/elements/clipPath.json
index 82c04421c87e39..957a67cfffd3ed 100644
--- a/svg/elements/clipPath.json
+++ b/svg/elements/clipPath.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/cursor.json b/svg/elements/cursor.json
index fa0c26bcac935b..472f426e51ec04 100644
--- a/svg/elements/cursor.json
+++ b/svg/elements/cursor.json
@@ -31,7 +31,8 @@
             "webview_android": {
               "version_added": "≤37",
               "version_removed": "57"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -106,7 +108,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -143,7 +146,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +185,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -218,7 +223,8 @@
               "webview_android": {
                 "version_added": "≤37",
                 "version_removed": "57"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/defs.json b/svg/elements/defs.json
index 56f1ccac4c3d3a..a5c5158962628e 100644
--- a/svg/elements/defs.json
+++ b/svg/elements/defs.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/desc.json b/svg/elements/desc.json
index acf90bff84881b..899eb758cf1807 100644
--- a/svg/elements/desc.json
+++ b/svg/elements/desc.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/ellipse.json b/svg/elements/ellipse.json
index 0550ba242d3af8..7fd5eb0fbbc335 100644
--- a/svg/elements/ellipse.json
+++ b/svg/elements/ellipse.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -73,7 +74,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -113,7 +115,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -149,7 +152,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -184,7 +188,8 @@
                   "version_added": "3"
                 },
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -225,7 +230,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -265,7 +271,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -307,7 +314,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feBlend.json b/svg/elements/feBlend.json
index 28995e35709688..0d786a1e32d949 100644
--- a/svg/elements/feBlend.json
+++ b/svg/elements/feBlend.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -147,7 +150,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feColorMatrix.json b/svg/elements/feColorMatrix.json
index 65ee6386de1aae..08c1cc4b386560 100644
--- a/svg/elements/feColorMatrix.json
+++ b/svg/elements/feColorMatrix.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feComponentTransfer.json b/svg/elements/feComponentTransfer.json
index 180353731de79a..0f7f40f3234916 100644
--- a/svg/elements/feComponentTransfer.json
+++ b/svg/elements/feComponentTransfer.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feComposite.json b/svg/elements/feComposite.json
index 574a61cb8eb99c..f8670518db801c 100644
--- a/svg/elements/feComposite.json
+++ b/svg/elements/feComposite.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": {
               "version_added": "1.5"
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -70,7 +71,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -183,7 +187,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +226,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -259,7 +265,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -295,7 +302,8 @@
               "samsunginternet_android": {
                 "version_added": "1.5"
               },
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -327,7 +335,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
diff --git a/svg/elements/feConvolveMatrix.json b/svg/elements/feConvolveMatrix.json
index 276de4155fc7e6..be61af7d70997c 100644
--- a/svg/elements/feConvolveMatrix.json
+++ b/svg/elements/feConvolveMatrix.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +241,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -269,7 +276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -303,7 +311,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -337,7 +346,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -371,7 +381,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feDiffuseLighting.json b/svg/elements/feDiffuseLighting.json
index 3044aa7329f14a..df046e66baceaf 100644
--- a/svg/elements/feDiffuseLighting.json
+++ b/svg/elements/feDiffuseLighting.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feDisplacementMap.json b/svg/elements/feDisplacementMap.json
index 8e1f8f415756ce..29e965582705e5 100644
--- a/svg/elements/feDisplacementMap.json
+++ b/svg/elements/feDisplacementMap.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feDistantLight.json b/svg/elements/feDistantLight.json
index 90887ba148d781..89e54cdf4b9499 100644
--- a/svg/elements/feDistantLight.json
+++ b/svg/elements/feDistantLight.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feDropShadow.json b/svg/elements/feDropShadow.json
index 582a3d81a19baf..ef785277a8931e 100644
--- a/svg/elements/feDropShadow.json
+++ b/svg/elements/feDropShadow.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -57,7 +58,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -89,7 +91,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,7 +124,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +157,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feFlood.json b/svg/elements/feFlood.json
index 4e03a4240d48ad..5e2924b3862ad4 100644
--- a/svg/elements/feFlood.json
+++ b/svg/elements/feFlood.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -93,7 +95,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feFuncA.json b/svg/elements/feFuncA.json
index f04c8033a17e9d..439ba6d9be99ac 100644
--- a/svg/elements/feFuncA.json
+++ b/svg/elements/feFuncA.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/feFuncB.json b/svg/elements/feFuncB.json
index 0ae4e54c7fb12d..cdcb4efe7b7667 100644
--- a/svg/elements/feFuncB.json
+++ b/svg/elements/feFuncB.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/feFuncG.json b/svg/elements/feFuncG.json
index dad9c4e3d3493a..bb41f2fd77b40e 100644
--- a/svg/elements/feFuncG.json
+++ b/svg/elements/feFuncG.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/feFuncR.json b/svg/elements/feFuncR.json
index df442401a7a313..a3e8940c8f0a95 100644
--- a/svg/elements/feFuncR.json
+++ b/svg/elements/feFuncR.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/feGaussianBlur.json b/svg/elements/feGaussianBlur.json
index 7194e494add149..bfbae5eed5af7b 100644
--- a/svg/elements/feGaussianBlur.json
+++ b/svg/elements/feGaussianBlur.json
@@ -30,7 +30,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feImage.json b/svg/elements/feImage.json
index 32931b79f422ff..698ea507012166 100644
--- a/svg/elements/feImage.json
+++ b/svg/elements/feImage.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feMerge.json b/svg/elements/feMerge.json
index c43d29fb9edee1..108a54373b2fce 100644
--- a/svg/elements/feMerge.json
+++ b/svg/elements/feMerge.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/feMergeNode.json b/svg/elements/feMergeNode.json
index 03fcba08e2254c..69fc569841cd6f 100644
--- a/svg/elements/feMergeNode.json
+++ b/svg/elements/feMergeNode.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feMorphology.json b/svg/elements/feMorphology.json
index 3cc37428782f14..6deb357266f973 100644
--- a/svg/elements/feMorphology.json
+++ b/svg/elements/feMorphology.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -147,7 +150,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feOffset.json b/svg/elements/feOffset.json
index 977371f7d88d5b..2abba0a5fcca6f 100644
--- a/svg/elements/feOffset.json
+++ b/svg/elements/feOffset.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/fePointLight.json b/svg/elements/fePointLight.json
index 9b4ccd07473df4..d27817857ad257 100644
--- a/svg/elements/fePointLight.json
+++ b/svg/elements/fePointLight.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -107,7 +109,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feSpecularLighting.json b/svg/elements/feSpecularLighting.json
index 4aa50442c9a9ab..7442c3d2d4dee4 100644
--- a/svg/elements/feSpecularLighting.json
+++ b/svg/elements/feSpecularLighting.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -141,7 +144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +183,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -211,7 +216,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feSpotLight.json b/svg/elements/feSpotLight.json
index bdc152dcb75c81..481a05dd016378 100644
--- a/svg/elements/feSpotLight.json
+++ b/svg/elements/feSpotLight.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -151,7 +154,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -191,7 +195,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +234,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -267,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -305,7 +312,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -343,7 +351,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feTile.json b/svg/elements/feTile.json
index 8082167c6a24a9..e694dee40358b4 100644
--- a/svg/elements/feTile.json
+++ b/svg/elements/feTile.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/feTurbulence.json b/svg/elements/feTurbulence.json
index a8b4646b93c634..a34429c383fe46 100644
--- a/svg/elements/feTurbulence.json
+++ b/svg/elements/feTurbulence.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -145,7 +148,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -179,7 +183,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -213,7 +218,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/filter.json b/svg/elements/filter.json
index ccf74e54712565..fb0c0848d3a455 100644
--- a/svg/elements/filter.json
+++ b/svg/elements/filter.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -236,7 +242,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -270,7 +277,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/font-face-format.json b/svg/elements/font-face-format.json
index 0e7b68272807a5..08ff1cc3fb81f5 100644
--- a/svg/elements/font-face-format.json
+++ b/svg/elements/font-face-format.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/font-face-name.json b/svg/elements/font-face-name.json
index 18ffc296fda235..a4f8de0c5dff23 100644
--- a/svg/elements/font-face-name.json
+++ b/svg/elements/font-face-name.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/font-face-src.json b/svg/elements/font-face-src.json
index 6f87bbde927886..a25dfce9f84c03 100644
--- a/svg/elements/font-face-src.json
+++ b/svg/elements/font-face-src.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/font-face-uri.json b/svg/elements/font-face-uri.json
index 88c6a36b242be6..61af27d63d1504 100644
--- a/svg/elements/font-face-uri.json
+++ b/svg/elements/font-face-uri.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/font-face.json b/svg/elements/font-face.json
index fd8b715ea4345c..0ce0c236b60edc 100644
--- a/svg/elements/font-face.json
+++ b/svg/elements/font-face.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -243,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -279,7 +286,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -315,7 +323,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -351,7 +360,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -387,7 +397,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -423,7 +434,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -459,7 +471,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -495,7 +508,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -531,7 +545,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -567,7 +582,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -603,7 +619,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -639,7 +656,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -675,7 +693,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -711,7 +730,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -747,7 +767,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -783,7 +804,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -819,7 +841,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -855,7 +878,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -891,7 +915,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -927,7 +952,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -963,7 +989,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -999,7 +1026,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1035,7 +1063,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1071,7 +1100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1107,7 +1137,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1143,7 +1174,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1179,7 +1211,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -1215,7 +1248,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/font.json b/svg/elements/font.json
index bff6ff2ff27cf7..6e762f08ff82aa 100644
--- a/svg/elements/font.json
+++ b/svg/elements/font.json
@@ -54,7 +54,8 @@
             "webview_android": {
               "version_added": "3",
               "version_removed": "62"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -91,7 +92,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +128,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -161,7 +164,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +203,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -234,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -269,7 +275,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/foreignObject.json b/svg/elements/foreignObject.json
index 9e7fa9ff256f37..61c2d9e1a3e390 100644
--- a/svg/elements/foreignObject.json
+++ b/svg/elements/foreignObject.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -121,7 +123,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +166,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +209,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -247,7 +252,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/g.json b/svg/elements/g.json
index 4dfa7fb16df0ff..85d40604d20746 100644
--- a/svg/elements/g.json
+++ b/svg/elements/g.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/glyph.json b/svg/elements/glyph.json
index dad0bf02237654..fb70818c9fbc39 100644
--- a/svg/elements/glyph.json
+++ b/svg/elements/glyph.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -167,7 +171,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -201,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -237,7 +243,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,7 +280,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -307,7 +315,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -341,7 +350,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -375,7 +385,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/glyphRef.json b/svg/elements/glyphRef.json
index 8a78c0b6bbdf0c..a2f45d0189fd84 100644
--- a/svg/elements/glyphRef.json
+++ b/svg/elements/glyphRef.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +202,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,7 +238,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -266,7 +273,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/hkern.json b/svg/elements/hkern.json
index 111b474284bc20..4baa21597a4f34 100644
--- a/svg/elements/hkern.json
+++ b/svg/elements/hkern.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -63,7 +64,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -135,7 +138,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -171,7 +175,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/image.json b/svg/elements/image.json
index 216c9626aa1429..564adae46fdfe8 100644
--- a/svg/elements/image.json
+++ b/svg/elements/image.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -101,7 +103,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -168,7 +172,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -200,7 +205,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -242,7 +248,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -274,7 +281,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -306,7 +314,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -339,7 +348,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -371,7 +381,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/line.json b/svg/elements/line.json
index fc3443863feaac..c11b79a3e38232 100644
--- a/svg/elements/line.json
+++ b/svg/elements/line.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -115,7 +117,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -155,7 +158,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -195,7 +199,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -235,7 +240,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/linearGradient.json b/svg/elements/linearGradient.json
index 609a63af68d7da..4a344ff3fb28f8 100644
--- a/svg/elements/linearGradient.json
+++ b/svg/elements/linearGradient.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -71,7 +72,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -138,7 +141,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -207,7 +212,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -239,7 +245,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -272,7 +279,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -304,7 +312,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -336,7 +345,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/marker.json b/svg/elements/marker.json
index 0370ebf0ccee59..217819ee7b397f 100644
--- a/svg/elements/marker.json
+++ b/svg/elements/marker.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -103,7 +105,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -175,7 +179,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -243,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -277,7 +284,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/mask.json b/svg/elements/mask.json
index 44d024bfb41f9f..c3e674add72c57 100644
--- a/svg/elements/mask.json
+++ b/svg/elements/mask.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -233,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -267,7 +274,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/metadata.json b/svg/elements/metadata.json
index 783faa03822f8b..ef0a2b84b44d56 100644
--- a/svg/elements/metadata.json
+++ b/svg/elements/metadata.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/svg/elements/missing-glyph.json b/svg/elements/missing-glyph.json
index 1af1dc4e7b0ce5..775d1f0f2425bd 100644
--- a/svg/elements/missing-glyph.json
+++ b/svg/elements/missing-glyph.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +202,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/mpath.json b/svg/elements/mpath.json
index 82da8f59c1af13..307e8375125b3f 100644
--- a/svg/elements/mpath.json
+++ b/svg/elements/mpath.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/path.json b/svg/elements/path.json
index 4dd3c820f4694a..17b2674305e6ff 100644
--- a/svg/elements/path.json
+++ b/svg/elements/path.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -79,7 +80,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -117,7 +119,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -154,7 +157,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -187,7 +191,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -230,7 +235,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/pattern.json b/svg/elements/pattern.json
index 32361bc611565b..114a07e36a970e 100644
--- a/svg/elements/pattern.json
+++ b/svg/elements/pattern.json
@@ -30,7 +30,8 @@
               "version_added": "3"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -98,7 +100,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -134,7 +137,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -170,7 +174,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -206,7 +211,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -244,7 +250,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -280,7 +287,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -316,7 +324,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -353,7 +362,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -389,7 +399,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/polygon.json b/svg/elements/polygon.json
index dce69d12e84906..a7c25532019225 100644
--- a/svg/elements/polygon.json
+++ b/svg/elements/polygon.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -143,7 +146,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +189,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/polyline.json b/svg/elements/polyline.json
index e698fcef95efd1..886023fedfc76a 100644
--- a/svg/elements/polyline.json
+++ b/svg/elements/polyline.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -143,7 +146,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +189,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/radialGradient.json b/svg/elements/radialGradient.json
index a1637b19038bfd..cdceb7a474b3c8 100644
--- a/svg/elements/radialGradient.json
+++ b/svg/elements/radialGradient.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -231,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -263,7 +270,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -298,7 +306,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -330,7 +339,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -367,7 +377,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -400,7 +411,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/rect.json b/svg/elements/rect.json
index a1efa19b3de9f2..321a36116a908e 100644
--- a/svg/elements/rect.json
+++ b/svg/elements/rect.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -100,7 +102,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -141,7 +144,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -181,7 +185,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -221,7 +226,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -263,7 +269,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -303,7 +310,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -343,7 +351,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -383,7 +392,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/script.json b/svg/elements/script.json
index 4f3abf6c592cde..309b8b3d07bf9e 100644
--- a/svg/elements/script.json
+++ b/svg/elements/script.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -132,7 +135,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -164,7 +168,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -199,7 +204,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": true,
@@ -233,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/set.json b/svg/elements/set.json
index ca27e7e2551bf4..1382794fe4a834 100644
--- a/svg/elements/set.json
+++ b/svg/elements/set.json
@@ -34,7 +34,8 @@
               "version_added": "1"
             },
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -102,7 +104,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -142,7 +145,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -182,7 +186,8 @@
                 "version_added": "1"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/stop.json b/svg/elements/stop.json
index 67d6d534de181b..6c82057a936570 100644
--- a/svg/elements/stop.json
+++ b/svg/elements/stop.json
@@ -36,7 +36,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -119,7 +121,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -169,7 +172,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/style.json b/svg/elements/style.json
index 728965558c507a..fa3ed30c62ff5c 100644
--- a/svg/elements/style.json
+++ b/svg/elements/style.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/svg.json b/svg/elements/svg.json
index 99fbac1411676c..bfbf983b904b1a 100644
--- a/svg/elements/svg.json
+++ b/svg/elements/svg.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -67,7 +68,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -109,7 +111,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -151,7 +154,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -193,7 +197,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -229,7 +234,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -271,7 +277,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -313,7 +320,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -355,7 +363,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -397,7 +406,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -433,7 +443,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/switch.json b/svg/elements/switch.json
index bd2a367a44197f..9d65930f6a7efd 100644
--- a/svg/elements/switch.json
+++ b/svg/elements/switch.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/symbol.json b/svg/elements/symbol.json
index 0e48cb76cc516f..12b35e6e0888a5 100644
--- a/svg/elements/symbol.json
+++ b/svg/elements/symbol.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -97,7 +99,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/text.json b/svg/elements/text.json
index 8816455bec83fe..abd45f5285b3b6 100644
--- a/svg/elements/text.json
+++ b/svg/elements/text.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -69,7 +70,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -105,7 +107,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -139,7 +142,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -172,7 +176,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -209,7 +214,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,7 +251,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -287,7 +294,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -323,7 +331,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -359,7 +368,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -395,7 +405,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/textPath.json b/svg/elements/textPath.json
index 1834353f670fb8..07471b7abdef32 100644
--- a/svg/elements/textPath.json
+++ b/svg/elements/textPath.json
@@ -29,7 +29,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -62,7 +63,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": true,
@@ -233,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -269,7 +276,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -305,7 +313,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -340,7 +349,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -375,7 +385,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/title.json b/svg/elements/title.json
index 540e98815057d6..fc90f5ae4e49de 100644
--- a/svg/elements/title.json
+++ b/svg/elements/title.json
@@ -34,7 +34,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -68,7 +69,8 @@
                 "version_added": "3"
               },
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/tref.json b/svg/elements/tref.json
index abbf598c33c512..672a62e3419ed7 100644
--- a/svg/elements/tref.json
+++ b/svg/elements/tref.json
@@ -27,7 +27,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -131,7 +134,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -165,7 +169,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/tspan.json b/svg/elements/tspan.json
index 05f6ba81b5fe5c..c79bfafdb2255b 100644
--- a/svg/elements/tspan.json
+++ b/svg/elements/tspan.json
@@ -32,7 +32,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -65,7 +66,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -99,7 +101,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -133,7 +136,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -166,7 +170,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -199,7 +204,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -233,7 +239,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -273,7 +280,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "3"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -308,7 +316,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -342,7 +351,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -376,7 +386,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/use.json b/svg/elements/use.json
index 3cfb4f57d46a98..4c9241f9d2734d 100644
--- a/svg/elements/use.json
+++ b/svg/elements/use.json
@@ -35,7 +35,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "4"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +78,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -116,7 +118,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -150,7 +153,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -185,7 +189,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -227,7 +232,8 @@
               "samsunginternet_android": "mirror",
               "webview_android": {
                 "version_added": "4"
-              }
+              },
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -261,7 +267,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -295,7 +302,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -330,7 +338,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -364,7 +373,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/view.json b/svg/elements/view.json
index fae19b218a44dd..0b9cc9a55bd675 100644
--- a/svg/elements/view.json
+++ b/svg/elements/view.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -59,7 +60,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -91,7 +93,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -123,7 +126,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/elements/vkern.json b/svg/elements/vkern.json
index df7b71fb27fe33..faeafb5cb533b3 100644
--- a/svg/elements/vkern.json
+++ b/svg/elements/vkern.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -61,7 +62,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -95,7 +97,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -129,7 +132,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -163,7 +167,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -197,7 +202,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/svg/global_attributes.json b/svg/global_attributes.json
index d233a7c05058f4..e79925be06f8ca 100644
--- a/svg/global_attributes.json
+++ b/svg/global_attributes.json
@@ -28,7 +28,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -64,7 +65,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -100,7 +102,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -137,7 +140,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -172,7 +176,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +213,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -250,7 +256,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": false
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -286,7 +293,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -318,7 +326,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -355,7 +364,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -387,7 +397,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -419,7 +430,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -459,7 +471,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -496,7 +509,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -538,7 +552,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "37"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -574,7 +589,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -610,7 +626,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -650,7 +667,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -692,7 +710,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -725,7 +744,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -761,7 +781,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -796,7 +817,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -837,7 +859,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -880,7 +903,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -920,7 +944,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -957,7 +982,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -993,7 +1019,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1027,7 +1054,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1061,7 +1089,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1097,7 +1126,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1133,7 +1163,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1176,7 +1207,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1216,7 +1248,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1229,6 +1262,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/SVG/Attribute/font-size-adjust",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-size-adjust-prop",
+          "tags": [
+            "web-features:font-size-adjust"
+          ],
           "support": {
             "chrome": {
               "version_added": "127"
@@ -1259,7 +1295,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1296,7 +1333,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1337,7 +1375,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1350,6 +1389,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/SVG/Attribute/font-variant",
           "spec_url": "https://drafts.csswg.org/css-fonts/#font-variant-prop",
+          "tags": [
+            "web-features:font-variant"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -1378,7 +1420,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1418,7 +1461,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1452,7 +1496,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1486,7 +1531,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1525,7 +1571,8 @@
             "samsunginternet_android": "mirror",
             "webview_android": {
               "version_added": "3"
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1565,7 +1612,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1601,7 +1649,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1637,7 +1686,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1673,7 +1723,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1709,7 +1760,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1802,16 +1854,17 @@
               },
               {
                 "prefix": "-webkit-",
-                "version_added": "2",
+                "version_added": "3",
                 "notes": "The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard <a href='https://developer.mozilla.org/docs/Web/CSS/-webkit-mask-attachment'><code>-webkit-mask-attachment</code></a> property."
               },
               {
-                "version_added": "2",
+                "version_added": "3",
                 "version_removed": "120",
                 "partial_implementation": true,
                 "notes": "While the property is recognized, values applied to it don't have any effect."
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1868,7 +1921,8 @@
             ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1906,7 +1960,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1945,8 +2000,9 @@
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
             "webview_android": {
-              "version_added": "2"
-            }
+              "version_added": "3"
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -1982,7 +2038,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2016,7 +2073,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2052,7 +2110,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2085,7 +2144,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -2120,7 +2180,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2156,7 +2217,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2190,7 +2252,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2224,7 +2287,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2260,7 +2324,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2296,7 +2361,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2332,7 +2398,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2368,7 +2435,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2411,7 +2479,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2470,7 +2539,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2524,7 +2594,8 @@
             "webview_android": {
               "version_added": "3",
               "notes": "From version 3 to 4.3, there is a serious bug where <code>text-rendering: optimizeLegibility</code> causes custom web fonts to not render. This was fixed in version 4.4."
-            }
+            },
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2652,10 +2723,10 @@
               },
               {
                 "prefix": "-webkit-",
-                "version_added": "2",
-                "notes": "Android 2.3 has a bug where input forms will \"jump\" when typing, if any container element has a <code>-webkit-transform</code>."
+                "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2694,7 +2765,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2734,7 +2806,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2770,7 +2843,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2815,7 +2889,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2826,6 +2901,9 @@
       },
       "white-space": {
         "__compat": {
+          "tags": [
+            "web-features:white-space"
+          ],
           "support": {
             "chrome": {
               "version_added": "1"
@@ -2853,7 +2931,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2891,7 +2970,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -2965,7 +3045,8 @@
                 "prefix": "-webkit-",
                 "version_added": "3"
               }
-            ]
+            ],
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/utils/walk.test.ts b/utils/walk.test.ts
index 7c664c5a45c485..fc99ba742905ae 100644
--- a/utils/walk.test.ts
+++ b/utils/walk.test.ts
@@ -42,7 +42,7 @@ describe('walk()', () => {
 
   it('should walk a single tree', () => {
     const results = Array.from(walk('api.Notification'));
-    assert.equal(results.length, 27);
+    assert.equal(results.length, 28);
     assert.equal(results[0].path, 'api.Notification');
     assert.equal(results[1].path, 'api.Notification.Notification');
   });
@@ -51,7 +51,7 @@ describe('walk()', () => {
     const results = Array.from(
       walk(['api.Notification', 'css.properties.color']),
     );
-    assert.equal(results.length, 28);
+    assert.equal(results.length, 29);
     assert.equal(results[0].path, 'api.Notification');
     assert.equal(results[results.length - 1].path, 'css.properties.color');
   });
diff --git a/webassembly/BigInt-to-i64-integration.json b/webassembly/BigInt-to-i64-integration.json
index 8c56743e8639f8..b8a3095d9cbcd3 100644
--- a/webassembly/BigInt-to-i64-integration.json
+++ b/webassembly/BigInt-to-i64-integration.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/api.json b/webassembly/api.json
index 5357f5577fc922..384020eb84e4ee 100644
--- a/webassembly/api.json
+++ b/webassembly/api.json
@@ -33,7 +33,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
@@ -75,7 +76,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -120,7 +122,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -163,7 +166,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -208,7 +212,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -251,7 +256,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webassembly/api/CompileError.json b/webassembly/api/CompileError.json
index a63e265fd4c253..18f1c4482ac0d9 100644
--- a/webassembly/api/CompileError.json
+++ b/webassembly/api/CompileError.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Exception.json b/webassembly/api/Exception.json
index df7ffa55fbe44a..0a21d09bf38616 100644
--- a/webassembly/api/Exception.json
+++ b/webassembly/api/Exception.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -111,7 +113,8 @@
                 },
                 "safari_ios": "mirror",
                 "samsunginternet_android": "mirror",
-                "webview_android": "mirror"
+                "webview_android": "mirror",
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -152,7 +155,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -192,7 +196,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -232,7 +237,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Global.json b/webassembly/api/Global.json
index 8db82341f6d768..52f454faf2f249 100644
--- a/webassembly/api/Global.json
+++ b/webassembly/api/Global.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -75,7 +76,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -114,7 +116,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -153,7 +156,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Instance.json b/webassembly/api/Instance.json
index f70925ab7053bf..7eb35e84ed18f1 100644
--- a/webassembly/api/Instance.json
+++ b/webassembly/api/Instance.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -118,7 +120,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/LinkError.json b/webassembly/api/LinkError.json
index 573dc602be224a..8a423246e4275d 100644
--- a/webassembly/api/LinkError.json
+++ b/webassembly/api/LinkError.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Memory.json b/webassembly/api/Memory.json
index ea8a3dd103264b..d6bb6472cdb866 100644
--- a/webassembly/api/Memory.json
+++ b/webassembly/api/Memory.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -126,7 +128,8 @@
                 "samsunginternet_android": "mirror",
                 "webview_android": {
                   "version_added": false
-                }
+                },
+                "webview_ios": "mirror"
               },
               "status": {
                 "experimental": false,
@@ -169,7 +172,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -211,7 +215,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Module.json b/webassembly/api/Module.json
index 07f70207e8713f..14596e8efd9933 100644
--- a/webassembly/api/Module.json
+++ b/webassembly/api/Module.json
@@ -34,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -76,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -119,7 +121,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -162,7 +165,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -205,7 +209,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/RuntimeError.json b/webassembly/api/RuntimeError.json
index 6f26674410f228..a0d631c16be071 100644
--- a/webassembly/api/RuntimeError.json
+++ b/webassembly/api/RuntimeError.json
@@ -37,7 +37,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -82,7 +83,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Table.json b/webassembly/api/Table.json
index 28ce17c90ca8d6..1e2df916c61400 100644
--- a/webassembly/api/Table.json
+++ b/webassembly/api/Table.json
@@ -1,4 +1,3 @@
-
 {
   "webassembly": {
     "api": {
@@ -35,7 +34,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -77,7 +77,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -119,7 +120,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -161,7 +163,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -203,7 +206,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -245,7 +249,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/api/Tag.json b/webassembly/api/Tag.json
index 1827249860b9f3..e6451128456d3b 100644
--- a/webassembly/api/Tag.json
+++ b/webassembly/api/Tag.json
@@ -32,7 +32,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
@@ -72,7 +73,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
@@ -112,7 +114,8 @@
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
-              "webview_android": "mirror"
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
             },
             "status": {
               "experimental": false,
diff --git a/webassembly/bulk-memory-operations.json b/webassembly/bulk-memory-operations.json
index ea80474b1f16a4..b30853656311b4 100644
--- a/webassembly/bulk-memory-operations.json
+++ b/webassembly/bulk-memory-operations.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/exception-handling.json b/webassembly/exception-handling.json
index 08e008054104eb..2d20d20f89753c 100644
--- a/webassembly/exception-handling.json
+++ b/webassembly/exception-handling.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/extended-constant-expressions.json b/webassembly/extended-constant-expressions.json
index d049199e39dc03..42a4b25f28bd99 100644
--- a/webassembly/extended-constant-expressions.json
+++ b/webassembly/extended-constant-expressions.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/fixed-width-SIMD.json b/webassembly/fixed-width-SIMD.json
index b2e005a1d8a7b1..dc6b45c08d675a 100644
--- a/webassembly/fixed-width-SIMD.json
+++ b/webassembly/fixed-width-SIMD.json
@@ -27,7 +27,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/garbage-collection.json b/webassembly/garbage-collection.json
index fec4f48d2bf0dd..efdb129a668578 100644
--- a/webassembly/garbage-collection.json
+++ b/webassembly/garbage-collection.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/multi-value.json b/webassembly/multi-value.json
index 45b580f1d57b2a..d719aa56fb7acb 100644
--- a/webassembly/multi-value.json
+++ b/webassembly/multi-value.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/multiMemory.json b/webassembly/multiMemory.json
index 6182bab5a7b45d..8c565e97003aa0 100644
--- a/webassembly/multiMemory.json
+++ b/webassembly/multiMemory.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/mutable-globals.json b/webassembly/mutable-globals.json
index 5a9b49109ea3f1..9a94bd23a35fb2 100644
--- a/webassembly/mutable-globals.json
+++ b/webassembly/mutable-globals.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/non-trapping-float-to-int-conversions.json b/webassembly/non-trapping-float-to-int-conversions.json
index 1f080479e67c04..677f1e29f1320d 100644
--- a/webassembly/non-trapping-float-to-int-conversions.json
+++ b/webassembly/non-trapping-float-to-int-conversions.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/reference-types.json b/webassembly/reference-types.json
index 8b0cc47803d086..2bd4c9fe7d18a8 100644
--- a/webassembly/reference-types.json
+++ b/webassembly/reference-types.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/relaxed-SIMD.json b/webassembly/relaxed-SIMD.json
index 04b7f76447ce9b..c9fd6a6e84fc9f 100644
--- a/webassembly/relaxed-SIMD.json
+++ b/webassembly/relaxed-SIMD.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": true,
diff --git a/webassembly/sign-extension-operations.json b/webassembly/sign-extension-operations.json
index 2e6a96a6927045..29554791fb6184 100644
--- a/webassembly/sign-extension-operations.json
+++ b/webassembly/sign-extension-operations.json
@@ -26,7 +26,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/tail-calls.json b/webassembly/tail-calls.json
index 05976d0054cfce..44624611cf5011 100644
--- a/webassembly/tail-calls.json
+++ b/webassembly/tail-calls.json
@@ -24,7 +24,8 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": "mirror",
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webassembly/threads-and-atomics.json b/webassembly/threads-and-atomics.json
index 23296b6c08ddd1..ac3f6c9461166e 100644
--- a/webassembly/threads-and-atomics.json
+++ b/webassembly/threads-and-atomics.json
@@ -28,7 +28,8 @@
           "samsunginternet_android": "mirror",
           "webview_android": {
             "version_added": false
-          }
+          },
+          "webview_ios": "mirror"
         },
         "status": {
           "experimental": false,
diff --git a/webdriver/commands/AcceptAlert.json b/webdriver/commands/AcceptAlert.json
index b573bb06a744d6..1e4c2847314cb9 100644
--- a/webdriver/commands/AcceptAlert.json
+++ b/webdriver/commands/AcceptAlert.json
@@ -4,6 +4,9 @@
       "AcceptAlert": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#accept-alert",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/AddCookie.json b/webdriver/commands/AddCookie.json
index fe4de7ad5a7b5f..060ec97ebf36fc 100644
--- a/webdriver/commands/AddCookie.json
+++ b/webdriver/commands/AddCookie.json
@@ -4,6 +4,9 @@
       "AddCookie": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#add-cookie",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/Back.json b/webdriver/commands/Back.json
index 249d3622c3b103..75d0d38aa583fd 100644
--- a/webdriver/commands/Back.json
+++ b/webdriver/commands/Back.json
@@ -4,6 +4,9 @@
       "Back": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#back",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/CloseWindow.json b/webdriver/commands/CloseWindow.json
index 86ff9319a11115..6bec32dd56c5e9 100644
--- a/webdriver/commands/CloseWindow.json
+++ b/webdriver/commands/CloseWindow.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/CloseWindow",
           "spec_url": "https://w3c.github.io/webdriver/#close-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/CreateVirtualPressureSource.json b/webdriver/commands/CreateVirtualPressureSource.json
new file mode 100644
index 00000000000000..48d25874c6de60
--- /dev/null
+++ b/webdriver/commands/CreateVirtualPressureSource.json
@@ -0,0 +1,41 @@
+{
+  "webdriver": {
+    "commands": {
+      "CreateVirtualPressureSource": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/compute-pressure/#create-virtual-pressure-source",
+          "support": {
+            "chrome": {
+              "version_added": "129",
+              "notes": "To enable Chromium support, include <code>{\"goog:chromeOptions\": {\"w3c\": true}}</code> in the <a href=https://developer.mozilla.org/docs/Web/WebDriver/Capabilities>capabilities</a>."
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/webdriver/commands/CreateVirtualSensor.json b/webdriver/commands/CreateVirtualSensor.json
index c3a150f709f33b..51e247c128788f 100644
--- a/webdriver/commands/CreateVirtualSensor.json
+++ b/webdriver/commands/CreateVirtualSensor.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/DeleteAllCookies.json b/webdriver/commands/DeleteAllCookies.json
index 0842e578b7a9a2..3d4952dbea3a94 100644
--- a/webdriver/commands/DeleteAllCookies.json
+++ b/webdriver/commands/DeleteAllCookies.json
@@ -4,6 +4,9 @@
       "DeleteAllCookies": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#delete-all-cookies",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/DeleteCookie.json b/webdriver/commands/DeleteCookie.json
index 9400742715458a..f5306ae49533b3 100644
--- a/webdriver/commands/DeleteCookie.json
+++ b/webdriver/commands/DeleteCookie.json
@@ -4,6 +4,9 @@
       "DeleteCookie": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#delete-cookie",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/DeleteSession.json b/webdriver/commands/DeleteSession.json
index 14c794e86fc642..ddf3f468bd7799 100644
--- a/webdriver/commands/DeleteSession.json
+++ b/webdriver/commands/DeleteSession.json
@@ -4,6 +4,9 @@
       "DeleteSession": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#delete-session",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/DeleteVirtualPressureSource.json b/webdriver/commands/DeleteVirtualPressureSource.json
new file mode 100644
index 00000000000000..7b867c15b34c16
--- /dev/null
+++ b/webdriver/commands/DeleteVirtualPressureSource.json
@@ -0,0 +1,41 @@
+{
+  "webdriver": {
+    "commands": {
+      "DeleteVirtualPressureSource": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/compute-pressure/#delete-virtual-pressure-source",
+          "support": {
+            "chrome": {
+              "version_added": "129",
+              "notes": "To enable Chromium support, include <code>{\"goog:chromeOptions\": {\"w3c\": true}}</code> in the <a href=https://developer.mozilla.org/docs/Web/WebDriver/Capabilities>capabilities</a>."
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/webdriver/commands/DeleteVirtualSensor.json b/webdriver/commands/DeleteVirtualSensor.json
index d34c3a656ff6d0..6e108e2a93ac04 100644
--- a/webdriver/commands/DeleteVirtualSensor.json
+++ b/webdriver/commands/DeleteVirtualSensor.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/DismissAlert.json b/webdriver/commands/DismissAlert.json
index b6f3decb65f5a2..3193b8cbfa374a 100644
--- a/webdriver/commands/DismissAlert.json
+++ b/webdriver/commands/DismissAlert.json
@@ -4,6 +4,9 @@
       "DismissAlert": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#dismiss-alert",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ElementClear.json b/webdriver/commands/ElementClear.json
index 29ff6f8b31e81c..182bb7a73e7bd2 100644
--- a/webdriver/commands/ElementClear.json
+++ b/webdriver/commands/ElementClear.json
@@ -4,6 +4,9 @@
       "ElementClear": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#element-clear",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ElementClick.json b/webdriver/commands/ElementClick.json
index 7856b7169de97c..4de06997fc10e1 100644
--- a/webdriver/commands/ElementClick.json
+++ b/webdriver/commands/ElementClick.json
@@ -4,6 +4,9 @@
       "ElementClick": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#element-click",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ElementSendKeys.json b/webdriver/commands/ElementSendKeys.json
index e1aa081c9e0ef5..2881bd87dc8155 100644
--- a/webdriver/commands/ElementSendKeys.json
+++ b/webdriver/commands/ElementSendKeys.json
@@ -4,6 +4,9 @@
       "ElementSendKeys": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#element-send-keys",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ExecuteAsyncScript.json b/webdriver/commands/ExecuteAsyncScript.json
index f60e30117c75d8..a84287f14606f8 100644
--- a/webdriver/commands/ExecuteAsyncScript.json
+++ b/webdriver/commands/ExecuteAsyncScript.json
@@ -4,6 +4,9 @@
       "ExecuteAsyncScript": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#execute-async-script",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ExecuteScript.json b/webdriver/commands/ExecuteScript.json
index 7ab4163b6fed2d..4274a5e1dd439c 100644
--- a/webdriver/commands/ExecuteScript.json
+++ b/webdriver/commands/ExecuteScript.json
@@ -4,6 +4,9 @@
       "ExecuteScript": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#execute-script",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/FindElement.json b/webdriver/commands/FindElement.json
index f2804128bb6c5b..6b980e512a10e4 100644
--- a/webdriver/commands/FindElement.json
+++ b/webdriver/commands/FindElement.json
@@ -4,6 +4,9 @@
       "FindElement": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#find-element",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/FindElementFromElement.json b/webdriver/commands/FindElementFromElement.json
index a49d0bed25bfd8..d1b5cc453d1dd8 100644
--- a/webdriver/commands/FindElementFromElement.json
+++ b/webdriver/commands/FindElementFromElement.json
@@ -4,6 +4,9 @@
       "FindElementFromElement": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#find-element-from-element",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/FindElements.json b/webdriver/commands/FindElements.json
index 96bb433fbf4422..12094a2912aec2 100644
--- a/webdriver/commands/FindElements.json
+++ b/webdriver/commands/FindElements.json
@@ -4,6 +4,9 @@
       "FindElements": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#find-elements",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/FindElementsFromElement.json b/webdriver/commands/FindElementsFromElement.json
index 094cfbf2f4e749..2bed0f497a621b 100644
--- a/webdriver/commands/FindElementsFromElement.json
+++ b/webdriver/commands/FindElementsFromElement.json
@@ -4,6 +4,9 @@
       "FindElementsFromElement": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#find-elements-from-element",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/Forward.json b/webdriver/commands/Forward.json
index 9a9adc7348361b..03062ae7a2179e 100644
--- a/webdriver/commands/Forward.json
+++ b/webdriver/commands/Forward.json
@@ -4,6 +4,9 @@
       "Forward": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#forward",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/FullscreenWindow.json b/webdriver/commands/FullscreenWindow.json
index 2cd05c9a72c173..0e6e527c563012 100644
--- a/webdriver/commands/FullscreenWindow.json
+++ b/webdriver/commands/FullscreenWindow.json
@@ -4,6 +4,9 @@
       "FullscreenWindow": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#fullscreen-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetActiveElement.json b/webdriver/commands/GetActiveElement.json
index 3d8b3ec9aad92c..bd0d2a1e6c195f 100644
--- a/webdriver/commands/GetActiveElement.json
+++ b/webdriver/commands/GetActiveElement.json
@@ -4,6 +4,9 @@
       "GetActiveElement": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-active-element",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetAlertText.json b/webdriver/commands/GetAlertText.json
index c5fdab5db05e25..fd434ec59b7ca6 100644
--- a/webdriver/commands/GetAlertText.json
+++ b/webdriver/commands/GetAlertText.json
@@ -4,6 +4,9 @@
       "GetAlertText": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-alert-text",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetAllCookies.json b/webdriver/commands/GetAllCookies.json
index 59eb9fc05c95ba..72e7b66e874423 100644
--- a/webdriver/commands/GetAllCookies.json
+++ b/webdriver/commands/GetAllCookies.json
@@ -4,6 +4,9 @@
       "GetAllCookies": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-all-cookies",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetCurrentURL.json b/webdriver/commands/GetCurrentURL.json
index 40cf1e080f57b6..e8b11f144b0871 100644
--- a/webdriver/commands/GetCurrentURL.json
+++ b/webdriver/commands/GetCurrentURL.json
@@ -4,6 +4,9 @@
       "GetCurrentURL": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-current-url",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementAttribute.json b/webdriver/commands/GetElementAttribute.json
index 919c8aebe4e2b5..9c86f0d030140e 100644
--- a/webdriver/commands/GetElementAttribute.json
+++ b/webdriver/commands/GetElementAttribute.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetElementAttribute",
           "spec_url": "https://w3c.github.io/webdriver/#get-element-attribute",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementCSSValue.json b/webdriver/commands/GetElementCSSValue.json
index de4017603d3e3b..a65831b738c931 100644
--- a/webdriver/commands/GetElementCSSValue.json
+++ b/webdriver/commands/GetElementCSSValue.json
@@ -4,6 +4,9 @@
       "GetElementCSSValue": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-element-css-value",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementProperty.json b/webdriver/commands/GetElementProperty.json
index 572e794e7b8c61..5dbfd84d2b1cdc 100644
--- a/webdriver/commands/GetElementProperty.json
+++ b/webdriver/commands/GetElementProperty.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetElementProperty",
           "spec_url": "https://w3c.github.io/webdriver/#get-element-property",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementRect.json b/webdriver/commands/GetElementRect.json
index 550300bc3133db..fb72d8dd73ef88 100644
--- a/webdriver/commands/GetElementRect.json
+++ b/webdriver/commands/GetElementRect.json
@@ -4,6 +4,9 @@
       "GetElementRect": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-element-rect",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementTagName.json b/webdriver/commands/GetElementTagName.json
index e3133931eb011b..42063a9bb4cd5f 100644
--- a/webdriver/commands/GetElementTagName.json
+++ b/webdriver/commands/GetElementTagName.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetElementTagName",
           "spec_url": "https://w3c.github.io/webdriver/#get-element-tag-name",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetElementText.json b/webdriver/commands/GetElementText.json
index 48197d08052bec..610bf1c3373a68 100644
--- a/webdriver/commands/GetElementText.json
+++ b/webdriver/commands/GetElementText.json
@@ -4,6 +4,9 @@
       "GetElementText": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-element-text",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetNamedCookie.json b/webdriver/commands/GetNamedCookie.json
index 87078824df55ba..f407f3483d3778 100644
--- a/webdriver/commands/GetNamedCookie.json
+++ b/webdriver/commands/GetNamedCookie.json
@@ -4,6 +4,9 @@
       "GetNamedCookie": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-named-cookie",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetPageSource.json b/webdriver/commands/GetPageSource.json
index 2bb45f7b26cfaf..4ef18612b216fd 100644
--- a/webdriver/commands/GetPageSource.json
+++ b/webdriver/commands/GetPageSource.json
@@ -4,6 +4,9 @@
       "GetPageSource": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-page-source",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetTimeouts.json b/webdriver/commands/GetTimeouts.json
index b0d988e12779e0..095d2644c7c349 100644
--- a/webdriver/commands/GetTimeouts.json
+++ b/webdriver/commands/GetTimeouts.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetTimeouts",
           "spec_url": "https://w3c.github.io/webdriver/#get-timeouts",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetTitle.json b/webdriver/commands/GetTitle.json
index d9f5662ea66889..504ad3f2f034e1 100644
--- a/webdriver/commands/GetTitle.json
+++ b/webdriver/commands/GetTitle.json
@@ -4,6 +4,9 @@
       "GetTitle": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-title",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetVirtualSensorInformation.json b/webdriver/commands/GetVirtualSensorInformation.json
index 8a5c4d14278893..8bf1d9ad1373d8 100644
--- a/webdriver/commands/GetVirtualSensorInformation.json
+++ b/webdriver/commands/GetVirtualSensorInformation.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetWindowHandle.json b/webdriver/commands/GetWindowHandle.json
index 9107cb29cb00a5..320df82380c4db 100644
--- a/webdriver/commands/GetWindowHandle.json
+++ b/webdriver/commands/GetWindowHandle.json
@@ -4,6 +4,9 @@
       "GetWindowHandle": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#get-window-handle",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetWindowHandles.json b/webdriver/commands/GetWindowHandles.json
index f4324a7f6d9771..d934b84ee5f1c6 100644
--- a/webdriver/commands/GetWindowHandles.json
+++ b/webdriver/commands/GetWindowHandles.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetWindowHandles",
           "spec_url": "https://w3c.github.io/webdriver/#get-window-handles",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/GetWindowRect.json b/webdriver/commands/GetWindowRect.json
index 4a3953e2f14154..5c2522338dfc1a 100644
--- a/webdriver/commands/GetWindowRect.json
+++ b/webdriver/commands/GetWindowRect.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/GetWindowRect",
           "spec_url": "https://w3c.github.io/webdriver/#get-window-rect",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/IsElementEnabled.json b/webdriver/commands/IsElementEnabled.json
index f2f386fcaffeb4..0a362f38b4ee3a 100644
--- a/webdriver/commands/IsElementEnabled.json
+++ b/webdriver/commands/IsElementEnabled.json
@@ -4,6 +4,9 @@
       "IsElementEnabled": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#is-element-enabled",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/IsElementSelected.json b/webdriver/commands/IsElementSelected.json
index d5c9fe733e60d8..4120d67d7db459 100644
--- a/webdriver/commands/IsElementSelected.json
+++ b/webdriver/commands/IsElementSelected.json
@@ -4,6 +4,9 @@
       "IsElementSelected": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#is-element-selected",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/MaximizeWindow.json b/webdriver/commands/MaximizeWindow.json
index 4f1a10a7b84194..0d3491efd36927 100644
--- a/webdriver/commands/MaximizeWindow.json
+++ b/webdriver/commands/MaximizeWindow.json
@@ -4,6 +4,9 @@
       "MaximizeWindow": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#maximize-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/MinimizeWindow.json b/webdriver/commands/MinimizeWindow.json
index 6b02674cd3f2d5..c691457316a52f 100644
--- a/webdriver/commands/MinimizeWindow.json
+++ b/webdriver/commands/MinimizeWindow.json
@@ -4,6 +4,9 @@
       "MinimizeWindow": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#minimize-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/NavigateTo.json b/webdriver/commands/NavigateTo.json
index cb463e32b8594c..d4fc337ab4adde 100644
--- a/webdriver/commands/NavigateTo.json
+++ b/webdriver/commands/NavigateTo.json
@@ -4,6 +4,9 @@
       "NavigateTo": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#navigate-to",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/NewSession.json b/webdriver/commands/NewSession.json
index 7a9dfe0e371cdd..2fce286e3acb85 100644
--- a/webdriver/commands/NewSession.json
+++ b/webdriver/commands/NewSession.json
@@ -4,6 +4,9 @@
       "NewSession": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#new-session",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/NewWindow.json b/webdriver/commands/NewWindow.json
index ad83ae43dc7049..1d82a39f3b1024 100644
--- a/webdriver/commands/NewWindow.json
+++ b/webdriver/commands/NewWindow.json
@@ -3,8 +3,11 @@
     "commands": {
       "NewWindow": {
         "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/New_Window",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/NewWindow",
           "spec_url": "https://w3c.github.io/webdriver/#new-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": false,
@@ -31,7 +34,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/PerformActions.json b/webdriver/commands/PerformActions.json
index e9788cecf04eaa..3759cabf32d62c 100644
--- a/webdriver/commands/PerformActions.json
+++ b/webdriver/commands/PerformActions.json
@@ -4,6 +4,9 @@
       "PerformActions": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#perform-actions",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": false,
@@ -32,7 +35,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/Refresh.json b/webdriver/commands/Refresh.json
index a2d1dcc0eb1b37..8abab49775a14d 100644
--- a/webdriver/commands/Refresh.json
+++ b/webdriver/commands/Refresh.json
@@ -4,6 +4,9 @@
       "Refresh": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#refresh",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/ReleaseActions.json b/webdriver/commands/ReleaseActions.json
index 08ae419d09e0b0..9ca64af972ab2b 100644
--- a/webdriver/commands/ReleaseActions.json
+++ b/webdriver/commands/ReleaseActions.json
@@ -4,6 +4,9 @@
       "ReleaseActions": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#release-actions",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": false,
@@ -32,7 +35,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SendAlertText.json b/webdriver/commands/SendAlertText.json
index 39d5cc22ff2a88..98e833557724a3 100644
--- a/webdriver/commands/SendAlertText.json
+++ b/webdriver/commands/SendAlertText.json
@@ -4,6 +4,9 @@
       "SendAlertText": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#send-alert-text",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SetTimeouts.json b/webdriver/commands/SetTimeouts.json
index e2d124147de502..780e3a463106d0 100644
--- a/webdriver/commands/SetTimeouts.json
+++ b/webdriver/commands/SetTimeouts.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/SetTimeouts",
           "spec_url": "https://w3c.github.io/webdriver/#set-timeouts",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SetWindowRect.json b/webdriver/commands/SetWindowRect.json
index 745a0d04751ad1..d48fbdeb502100 100644
--- a/webdriver/commands/SetWindowRect.json
+++ b/webdriver/commands/SetWindowRect.json
@@ -5,6 +5,9 @@
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/WebDriver/Commands/SetWindowRect",
           "spec_url": "https://w3c.github.io/webdriver/#set-window-rect",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -39,7 +42,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/Status.json b/webdriver/commands/Status.json
index fdff94a1c914b8..d7ac6dae511ac0 100644
--- a/webdriver/commands/Status.json
+++ b/webdriver/commands/Status.json
@@ -4,6 +4,9 @@
       "Status": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#status",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SwitchToFrame.json b/webdriver/commands/SwitchToFrame.json
index 2dbf415e98d607..6ef2bdaa832e14 100644
--- a/webdriver/commands/SwitchToFrame.json
+++ b/webdriver/commands/SwitchToFrame.json
@@ -4,6 +4,9 @@
       "SwitchToFrame": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#switch-to-frame",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SwitchToParentFrame.json b/webdriver/commands/SwitchToParentFrame.json
index 225b698685c098..7873600856de54 100644
--- a/webdriver/commands/SwitchToParentFrame.json
+++ b/webdriver/commands/SwitchToParentFrame.json
@@ -4,6 +4,9 @@
       "SwitchToParentFrame": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#switch-to-parent-frame",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/SwitchToWindow.json b/webdriver/commands/SwitchToWindow.json
index b0c6f629c8f526..835e0f08c61980 100644
--- a/webdriver/commands/SwitchToWindow.json
+++ b/webdriver/commands/SwitchToWindow.json
@@ -4,6 +4,9 @@
       "SwitchToWindow": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#switch-to-window",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/TakeElementScreenshot.json b/webdriver/commands/TakeElementScreenshot.json
index 052e7a0e6e72b7..6cb3c51cba9036 100644
--- a/webdriver/commands/TakeElementScreenshot.json
+++ b/webdriver/commands/TakeElementScreenshot.json
@@ -4,6 +4,9 @@
       "TakeElementScreenshot": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#take-element-screenshot",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/TakeScreenshot.json b/webdriver/commands/TakeScreenshot.json
index c703e97336aa0f..d1be197d06d6a3 100644
--- a/webdriver/commands/TakeScreenshot.json
+++ b/webdriver/commands/TakeScreenshot.json
@@ -4,6 +4,9 @@
       "TakeScreenshot": {
         "__compat": {
           "spec_url": "https://w3c.github.io/webdriver/#take-screenshot",
+          "tags": [
+            "web-features:webdriver"
+          ],
           "support": {
             "chrome": {
               "version_added": "65",
@@ -38,7 +41,8 @@
               "version_added": false,
               "notes": "The vendor-supported implementation for Samsung Internet is non-spec-conforming and incompatible."
             },
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webdriver/commands/UpdateVirtualPressureSource.json b/webdriver/commands/UpdateVirtualPressureSource.json
new file mode 100644
index 00000000000000..2efa5a9c8f2ecd
--- /dev/null
+++ b/webdriver/commands/UpdateVirtualPressureSource.json
@@ -0,0 +1,41 @@
+{
+  "webdriver": {
+    "commands": {
+      "UpdateVirtualPressureSource": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/compute-pressure/#update-virtual-pressure-source",
+          "support": {
+            "chrome": {
+              "version_added": "129",
+              "notes": "To enable Chromium support, include <code>{\"goog:chromeOptions\": {\"w3c\": true}}</code> in the <a href=https://developer.mozilla.org/docs/Web/WebDriver/Capabilities>capabilities</a>."
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/webdriver/commands/UpdateVirtualSensorReading.json b/webdriver/commands/UpdateVirtualSensorReading.json
index 1b564af47cef16..24440a8b2437d3 100644
--- a/webdriver/commands/UpdateVirtualSensorReading.json
+++ b/webdriver/commands/UpdateVirtualSensorReading.json
@@ -26,7 +26,8 @@
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
           },
           "status": {
             "experimental": false,
diff --git a/webextensions/api/browserAction.json b/webextensions/api/browserAction.json
index 552b1adbc61842..fd5b14b74f8a98 100644
--- a/webextensions/api/browserAction.json
+++ b/webextensions/api/browserAction.json
@@ -595,7 +595,7 @@
                 },
                 "edge": "mirror",
                 "firefox": {
-                  "version_added": true,
+                  "version_added": "≤57",
                   "notes": "Before Firefox 59, invalid color strings behaved as <code>null</code>."
                 },
                 "firefox_android": {
diff --git a/webextensions/api/commands.json b/webextensions/api/commands.json
index 173c172785acbe..ebdf4947ac276a 100644
--- a/webextensions/api/commands.json
+++ b/webextensions/api/commands.json
@@ -74,7 +74,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤96"
                 },
                 "edge": "mirror",
                 "firefox": {
diff --git a/webextensions/api/cookies.json b/webextensions/api/cookies.json
index 9b7c882029cc22..994d0d16513658 100644
--- a/webextensions/api/cookies.json
+++ b/webextensions/api/cookies.json
@@ -699,7 +699,8 @@
                 "opera": "mirror",
                 "safari": {
                   "version_added": false
-                }
+                },
+                "safari_ios": "mirror"
               }
             }
           },
diff --git a/webextensions/api/devtools.json b/webextensions/api/devtools.json
index 51513cce9a2b1b..966f7da52ff23c 100644
--- a/webextensions/api/devtools.json
+++ b/webextensions/api/devtools.json
@@ -490,9 +490,7 @@
                   "firefox_android": {
                     "version_added": false
                   },
-                  "opera": {
-                    "version_added": true
-                  },
+                  "opera": "mirror",
                   "safari": {
                     "version_added": false
                   },
@@ -535,9 +533,7 @@
                   "firefox_android": {
                     "version_added": false
                   },
-                  "opera": {
-                    "version_added": true
-                  },
+                  "opera": "mirror",
                   "safari": {
                     "version_added": false
                   },
diff --git a/webextensions/api/events.json b/webextensions/api/events.json
index e3d5a92e31024b..017e8b5a321f49 100644
--- a/webextensions/api/events.json
+++ b/webextensions/api/events.json
@@ -12,7 +12,7 @@
               "version_added": "14"
             },
             "firefox": {
-              "version_added": true
+              "version_added": "≤50"
             },
             "firefox_android": "mirror",
             "opera": "mirror",
@@ -35,7 +35,7 @@
                 "version_added": "14"
               },
               "firefox": {
-                "version_added": true
+                "version_added": "≤53"
               },
               "firefox_android": "mirror",
               "opera": "mirror",
@@ -49,6 +49,7 @@
           },
           "addListener": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/addListener",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -57,7 +58,7 @@
                   "version_added": "14"
                 },
                 "firefox": {
-                  "version_added": true
+                  "version_added": "≤59"
                 },
                 "firefox_android": "mirror",
                 "opera": "mirror",
@@ -72,6 +73,7 @@
           },
           "addRules": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/addRules",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -91,6 +93,7 @@
           },
           "getRules": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/getRules",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -110,6 +113,7 @@
           },
           "hasListener": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/hasListener",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -118,7 +122,7 @@
                   "version_added": "14"
                 },
                 "firefox": {
-                  "version_added": true
+                  "version_added": "≤59"
                 },
                 "firefox_android": "mirror",
                 "opera": "mirror",
@@ -133,6 +137,7 @@
           },
           "hasListeners": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/hasListeners",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -152,6 +157,7 @@
           },
           "removeListener": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/removeListener",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
@@ -160,7 +166,7 @@
                   "version_added": "14"
                 },
                 "firefox": {
-                  "version_added": true
+                  "version_added": "≤59"
                 },
                 "firefox_android": "mirror",
                 "opera": "mirror",
@@ -175,6 +181,7 @@
           },
           "removeRules": {
             "__compat": {
+              "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/events/Event/removeRules",
               "support": {
                 "chrome": {
                   "version_added": "≤65"
diff --git a/webextensions/api/menus.json b/webextensions/api/menus.json
index 2df500c4e960d6..ccd2f147b98c7f 100644
--- a/webextensions/api/menus.json
+++ b/webextensions/api/menus.json
@@ -38,7 +38,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT",
-                "version_added": true
+                "version_added": "≤53"
               },
               "edge": "mirror",
               "firefox": [
@@ -70,7 +70,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.ContextType",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
@@ -148,7 +148,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
+                  "version_added": "≤58",
                   "notes": "Available for use in Manifest V2 only."
                 },
                 "edge": "mirror",
@@ -177,7 +177,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤58"
                 },
                 "edge": "mirror",
                 "firefox": {
@@ -198,7 +198,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
+                  "version_added": "≤58",
                   "notes": "Available for use in Manifest V2 only."
                 },
                 "edge": "mirror",
@@ -292,7 +292,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.ItemType",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
@@ -324,7 +324,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.OnClickData",
-                "version_added": true
+                "version_added": "≤23"
               },
               "edge": "mirror",
               "firefox": [
@@ -464,7 +464,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤95"
                 },
                 "edge": "mirror",
                 "firefox": {
@@ -512,7 +512,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.create",
-                "version_added": true,
+                "version_added": "≤58",
                 "notes": "Items that don't specify 'contexts' do not inherit contexts from their parents."
               },
               "edge": "mirror",
@@ -545,7 +545,7 @@
               "description": "<code>&amp;</code> in <code>title</code> sets access key",
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤69"
                 },
                 "edge": "mirror",
                 "firefox": {
@@ -664,7 +664,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.onClicked",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
@@ -802,7 +802,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.remove",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
@@ -834,7 +834,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.removeAll",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
@@ -866,7 +866,7 @@
             "support": {
               "chrome": {
                 "alternative_name": "contextMenus.update",
-                "version_added": true
+                "version_added": "≤58"
               },
               "edge": "mirror",
               "firefox": [
diff --git a/webextensions/api/privacy.json b/webextensions/api/privacy.json
index 6192e16e7c91e7..24f4f46a3af205 100644
--- a/webextensions/api/privacy.json
+++ b/webextensions/api/privacy.json
@@ -260,11 +260,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤77"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -300,11 +298,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤77"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -321,11 +317,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤77"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -342,11 +336,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤77"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -466,11 +458,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤59"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "54"
                 },
diff --git a/webextensions/api/runtime.json b/webextensions/api/runtime.json
index 49c8dd71cf74ee..ac097a8bc91d27 100644
--- a/webextensions/api/runtime.json
+++ b/webextensions/api/runtime.json
@@ -965,7 +965,7 @@
                 },
                 "edge": "mirror",
                 "firefox": {
-                  "version_added": true
+                  "version_added": "≤62"
                 },
                 "firefox_android": "mirror",
                 "opera": "mirror",
@@ -1025,7 +1025,7 @@
                 },
                 "edge": "mirror",
                 "firefox": {
-                  "version_added": true
+                  "version_added": "≤62"
                 },
                 "firefox_android": "mirror",
                 "opera": "mirror",
diff --git a/webextensions/api/storage.json b/webextensions/api/storage.json
index a3ed5ecceafddc..b4fda7a9592466 100644
--- a/webextensions/api/storage.json
+++ b/webextensions/api/storage.json
@@ -118,7 +118,7 @@
                 "description": "Supports empty key",
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤105"
                   },
                   "edge": {
                     "version_added": "14"
@@ -176,16 +176,12 @@
                 "chrome": {
                   "version_added": "73"
                 },
-                "edge": {
-                  "version_added": true
-                },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "101"
                 },
                 "firefox_android": "mirror",
-                "opera": {
-                  "version_added": true
-                },
+                "opera": "mirror",
                 "safari": {
                   "version_added": "14"
                 },
@@ -228,7 +224,7 @@
                 "description": "Supports empty key",
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤105"
                   },
                   "edge": {
                     "version_added": "14"
diff --git a/webextensions/manifest/background.json b/webextensions/manifest/background.json
index 07abf82c4f5880..5b3eebe1847e2e 100644
--- a/webextensions/manifest/background.json
+++ b/webextensions/manifest/background.json
@@ -124,7 +124,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true,
+                "version_added": "≤72",
                 "notes": "Available for use in Manifest V2 only."
               },
               "edge": {
diff --git a/webextensions/manifest/commands.json b/webextensions/manifest/commands.json
index 9d109ed4d60167..484e43997511e6 100644
--- a/webextensions/manifest/commands.json
+++ b/webextensions/manifest/commands.json
@@ -201,7 +201,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": true,
+                "version_added": "91",
                 "notes": "Available for use in Manifest V3 or later."
               },
               "firefox_android": {
diff --git a/webextensions/manifest/content_scripts.json b/webextensions/manifest/content_scripts.json
index 7df249c272ddcc..d2703afa209709 100644
--- a/webextensions/manifest/content_scripts.json
+++ b/webextensions/manifest/content_scripts.json
@@ -31,7 +31,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -54,7 +54,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -96,7 +96,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -118,7 +118,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -141,7 +141,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -163,7 +163,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -229,7 +229,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -252,7 +252,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
diff --git a/webextensions/manifest/developer.json b/webextensions/manifest/developer.json
index 0b0fd68f6502af..5c2da35b003841 100644
--- a/webextensions/manifest/developer.json
+++ b/webextensions/manifest/developer.json
@@ -14,7 +14,7 @@
             },
             "firefox_android": "mirror",
             "opera": {
-              "version_added": true
+              "version_added": "≤45"
             },
             "safari": {
               "version_added": false
diff --git a/webextensions/manifest/dictionaries.json b/webextensions/manifest/dictionaries.json
index 4785bb44995b76..8f325702c456c7 100644
--- a/webextensions/manifest/dictionaries.json
+++ b/webextensions/manifest/dictionaries.json
@@ -10,7 +10,7 @@
             },
             "edge": "mirror",
             "firefox": {
-              "version_added": true
+              "version_added": "61"
             },
             "firefox_android": "mirror",
             "opera": "mirror",
diff --git a/webextensions/manifest/externally_connectable.json b/webextensions/manifest/externally_connectable.json
index 820f29f3ef3bf5..d948dbc18b8681 100644
--- a/webextensions/manifest/externally_connectable.json
+++ b/webextensions/manifest/externally_connectable.json
@@ -6,11 +6,9 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/externally_connectable",
           "support": {
             "chrome": {
-              "version_added": true
-            },
-            "edge": {
-              "version_added": "79"
+              "version_added": "≤67"
             },
+            "edge": "mirror",
             "firefox": {
               "version_added": false,
               "impl_url": "https://bugzil.la/1319168"
diff --git a/webextensions/manifest/incognito.json b/webextensions/manifest/incognito.json
index 7f600f75879934..941d5e1d47e0aa 100644
--- a/webextensions/manifest/incognito.json
+++ b/webextensions/manifest/incognito.json
@@ -47,7 +47,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "≤18"
diff --git a/webextensions/manifest/manifest_version.json b/webextensions/manifest/manifest_version.json
index 1dcfb5281f01d6..e5b37fe2d90c71 100644
--- a/webextensions/manifest/manifest_version.json
+++ b/webextensions/manifest/manifest_version.json
@@ -29,7 +29,7 @@
             "description": "Version 2",
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤21"
               },
               "edge": {
                 "version_added": "14"
@@ -38,7 +38,9 @@
                 "version_added": "48"
               },
               "firefox_android": "mirror",
-              "opera": "mirror",
+              "opera": {
+                "version_added": "15"
+              },
               "safari": {
                 "version_added": "14"
               },
diff --git a/webextensions/manifest/offline_enabled.json b/webextensions/manifest/offline_enabled.json
index 359d36dd0d7a0c..70eaa83888d1c4 100644
--- a/webextensions/manifest/offline_enabled.json
+++ b/webextensions/manifest/offline_enabled.json
@@ -6,11 +6,9 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/offline_enabled",
           "support": {
             "chrome": {
-              "version_added": true
-            },
-            "edge": {
-              "version_added": "79"
+              "version_added": "≤72"
             },
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },
diff --git a/webextensions/manifest/omnibox.json b/webextensions/manifest/omnibox.json
index 84cff82b32183d..a3447f4edbecb1 100644
--- a/webextensions/manifest/omnibox.json
+++ b/webextensions/manifest/omnibox.json
@@ -26,11 +26,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤72"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "52"
               },
diff --git a/webextensions/manifest/optional_permissions.json b/webextensions/manifest/optional_permissions.json
index 92c06e36f2ae7f..467c06297dc29f 100644
--- a/webextensions/manifest/optional_permissions.json
+++ b/webextensions/manifest/optional_permissions.json
@@ -684,7 +684,7 @@
               },
               "edge": "mirror",
               "firefox": {
-                "version_added": true
+                "version_added": "63"
               },
               "firefox_android": "mirror",
               "opera": "mirror",
diff --git a/webextensions/manifest/options_page.json b/webextensions/manifest/options_page.json
index 2217b54d27f794..7388681c00c2cf 100644
--- a/webextensions/manifest/options_page.json
+++ b/webextensions/manifest/options_page.json
@@ -6,7 +6,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/options_page",
           "support": {
             "chrome": {
-              "version_added": true
+              "version_added": "≤65"
             },
             "edge": {
               "version_added": "14"
diff --git a/webextensions/manifest/page_action.json b/webextensions/manifest/page_action.json
index 22640c14acf95e..bcaccfa92dd75c 100644
--- a/webextensions/manifest/page_action.json
+++ b/webextensions/manifest/page_action.json
@@ -21,15 +21,9 @@
               "version_added": "48"
             },
             "firefox_android": {
-              "version_added": true
-            },
-            "opera": {
-              "version_added": true,
-              "notes": [
-                "If an extension defines a page action, it is not allowed to define a browser action as well.",
-                "Available for use in Manifest V2 only."
-              ]
+              "version_added": "≤57"
             },
+            "opera": "mirror",
             "safari": {
               "version_added": "14",
               "notes": [
@@ -72,7 +66,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true,
+                "version_added": "≤72",
                 "notes": "SVG icons are not supported."
               },
               "edge": {
@@ -87,7 +81,7 @@
                 "version_added": "48"
               },
               "firefox_android": {
-                "version_added": true
+                "version_added": "≤57"
               },
               "opera": "mirror",
               "safari": [
@@ -125,7 +119,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -134,7 +128,7 @@
                 "version_added": "48"
               },
               "firefox_android": {
-                "version_added": true
+                "version_added": "≤57"
               },
               "opera": "mirror",
               "safari": {
@@ -150,7 +144,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤72"
               },
               "edge": {
                 "version_added": "14"
@@ -159,7 +153,7 @@
                 "version_added": "48"
               },
               "firefox_android": {
-                "version_added": true
+                "version_added": "≤57"
               },
               "opera": "mirror",
               "safari": {
diff --git a/webextensions/manifest/permissions.json b/webextensions/manifest/permissions.json
index 984b365c5e2a22..1e0de3da3f9acc 100644
--- a/webextensions/manifest/permissions.json
+++ b/webextensions/manifest/permissions.json
@@ -49,11 +49,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "48"
               },
@@ -93,7 +91,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "15"
@@ -135,11 +133,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "53"
               },
@@ -225,11 +221,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": false
               },
@@ -246,7 +240,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -292,7 +286,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -315,11 +309,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": false
               },
@@ -435,11 +427,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "48"
               },
@@ -457,11 +447,9 @@
             "description": "<code>downloads.open</code>",
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "48"
               },
@@ -520,11 +508,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "49"
               },
@@ -543,11 +529,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "53"
               },
@@ -566,7 +550,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "15"
@@ -587,11 +571,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "51"
               },
@@ -679,11 +661,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": false
               },
@@ -721,11 +701,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "54"
               },
@@ -806,11 +784,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "52"
               },
@@ -829,7 +805,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -873,7 +849,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -919,11 +895,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤64"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "52"
               },
@@ -979,7 +953,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -1004,7 +978,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤64"
               },
               "edge": {
                 "version_added": "14"
@@ -1046,7 +1020,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true,
+                "version_added": "≤64",
                 "notes": "In Manifest V3, no longer available for most extensions (the exception being policy-installed extensions). Use the <code>declarativeNetRequest</code> API instead."
               },
               "edge": {
diff --git a/webextensions/manifest/storage.json b/webextensions/manifest/storage.json
index 524cfdbd825d56..f7334656e7a54f 100644
--- a/webextensions/manifest/storage.json
+++ b/webextensions/manifest/storage.json
@@ -6,7 +6,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/storage",
           "support": {
             "chrome": {
-              "version_added": true
+              "version_added": "≤80"
             },
             "edge": {
               "version_added": "79"
@@ -30,7 +30,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
+                "version_added": "≤80"
               },
               "edge": {
                 "version_added": "79"
diff --git a/webextensions/manifest/theme.json b/webextensions/manifest/theme.json
index 426f974e9f2065..cbf0774f531eb3 100644
--- a/webextensions/manifest/theme.json
+++ b/webextensions/manifest/theme.json
@@ -13,7 +13,7 @@
               "version_added": "55"
             },
             "firefox_android": {
-              "version_added": true
+              "version_added": false
             },
             "opera": {
               "version_added": false
@@ -36,7 +36,7 @@
                 "version_added": "55"
               },
               "firefox_android": {
-                "version_added": "65"
+                "version_added": false
               },
               "opera": {
                 "version_added": false
@@ -51,13 +51,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "58",
                   "notes": "Before version 59, the RGB array form was not supported for this property."
@@ -130,7 +127,7 @@
                   "notes": "Before version 59, the CSS color form was not supported for this property."
                 },
                 "firefox_android": {
-                  "version_added": true
+                  "version_added": false
                 },
                 "opera": {
                   "version_added": false
@@ -146,13 +143,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "60"
                 },
@@ -173,13 +167,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -198,13 +189,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -265,13 +253,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "63"
                 },
@@ -292,13 +277,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -317,13 +299,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -342,13 +321,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤62",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "63"
                 },
@@ -453,13 +429,10 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true,
-                  "notes": "The CSS color form is not supported for this property."
-                },
-                "edge": {
-                  "version_added": "79",
+                  "version_added": "≤65",
                   "notes": "The CSS color form is not supported for this property."
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "59"
                 },
@@ -866,17 +839,15 @@
             "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/theme#images",
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤67"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "55",
                 "notes": "Before Firefox 60, this property was required."
               },
               "firefox_android": {
-                "version_added": true
+                "version_added": false
               },
               "opera": {
                 "version_added": false
@@ -912,17 +883,14 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤76"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "55"
                 },
                 "firefox_android": {
-                  "version_added": true,
-                  "notes": "This property is required."
+                  "version_added": false
                 },
                 "opera": {
                   "version_added": false
@@ -940,11 +908,9 @@
             "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/theme#properties",
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤67"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "55"
               },
diff --git a/webextensions/manifest/user_scripts.json b/webextensions/manifest/user_scripts.json
index ca118634919752..c7cd3473b3d3fb 100644
--- a/webextensions/manifest/user_scripts.json
+++ b/webextensions/manifest/user_scripts.json
@@ -6,11 +6,9 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/user_scripts",
           "support": {
             "chrome": {
-              "version_added": true
-            },
-            "edge": {
-              "version_added": "79"
+              "version_added": "≤78"
             },
+            "edge": "mirror",
             "firefox": {
               "version_added": "68"
             },
@@ -28,11 +26,9 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤78"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "68"
               },
diff --git a/webextensions/manifest/version.json b/webextensions/manifest/version.json
index b30acb5baa6833..af05fc005ff875 100644
--- a/webextensions/manifest/version.json
+++ b/webextensions/manifest/version.json
@@ -16,9 +16,7 @@
               "version_added": "48"
             },
             "firefox_android": "mirror",
-            "opera": {
-              "version_added": true
-            },
+            "opera": "mirror",
             "safari": {
               "version_added": "14"
             },
diff --git a/webextensions/manifest/version_name.json b/webextensions/manifest/version_name.json
index 146a219ce80dd1..54dafad14901d1 100644
--- a/webextensions/manifest/version_name.json
+++ b/webextensions/manifest/version_name.json
@@ -6,11 +6,9 @@
           "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/version_name",
           "support": {
             "chrome": {
-              "version_added": true
-            },
-            "edge": {
-              "version_added": "79"
+              "version_added": "≤65"
             },
+            "edge": "mirror",
             "firefox": {
               "version_added": false
             },